technical reference vc121-12 · 2020. 8. 19. · vc121-12 technical reference version 1.3.1 authors...

VC121-12

Technical Reference

Version 1.3.1

Authors Vector Informatik GmbH

Status Released

Technical Reference VC121-12

© 2020 Vector Informatik GmbH Version 1.3.1 2

based on template version 6.0.1

Document Information

History

Author Date Version Remarks

Vector Informatik GmbH 25.10.2017 1.0 Initial revision

Vector Informatik GmbH 26.10.2017 1.1 document properties and Test

Report properties changed

rpl 11.02.2020 1.2 IP protection class adapted

ssm

2020-04-07 1.2.0 Update version no

Add Important Notes

Update Reference Documents

dim 2020-06-22 1.3.0 Remove the option ‘partial

networking‘

dim 2020-06-23 1.3.1 Pin allocation table corrected

Reference Documents

No. Source Title Version

[1] Vector VC121-12 Test report (VC121-12_VV_Report.pdf) 1.3




Contents

Document Information .......................................................................................................... 2

History .............................................................................................................................. 2

Reference Documents ...................................................................................................... 2

Contents ........................................................................................................................... 3

Illustrations ....................................................................................................................... 5

Tables............................................................................................................................... 5

1 Introduction ................................................................................................................... 6

1.1 Overview ................................................................................................................. 7

1.2 ECU Technical Characteristics ............................................................................... 8

1.3 Important Notes ..................................................................................................... 9

Safety Instructions ............................................................................................................ 9

2 Electrical Characteristics .............................................................................................11

2.1 High-speed CAN ....................................................................................................11

2.2 LIN .........................................................................................................................11

2.3 FlexRay .................................................................................................................12

2.4 BroadR-Reach .......................................................................................................12

2.5 Analog Input 0…5 V ...............................................................................................13

2.6 Analog Impedance Inputs ......................................................................................13

2.7 Analog Inputs 0…18 V ...........................................................................................14

2.8 Digital Input 0…UBat .............................................................................................15

2.9 Frequency inputs for digital signals ........................................................................18

2.10 Frequency inputs for reluctance sensors .................................................................19

2.11 Outputs ....................................................................................................................20

2.12.1 Main Controller..................................................................................................25

2.12.2 Safety Controller ...............................................................................................25

2.12.3 System Basis Chip ............................................................................................26

2.12.4 Safety Concept .................................................................................................27

3 Mechanical Characteristics ..........................................................................................30

4 Qualification .................................................................................................................31

4.1 Configuration .........................................................................................................31

5 Appendix ......................................................................................................................32

5.1 Pin Allocation Table ...............................................................................................32

6 Glossary and Abbreviations .........................................................................................34




6.1 Glossary ................................................................................................................34

6.2 Abbreviations .........................................................................................................34

7 Contact ........................................................................................................................35




Illustrations

Figure 1-1 VC121-12 block diagram............................................................................... 7

Figure 2-1 LIN schematic ..............................................................................................11

Figure 2-2 FlexRay schematic....................................................................................... 12

Figure 2-3 Analog Input 0…5 V schematic ................................................................... 13

Figure 2-4 Analog impedance input schematic ............................................................ 14

Figure 2-5 Analog input 0…18 V schematic ................................................................. 15

Figure 2-6 Digital Input 0…UBat schematic.................................................................. 17

Figure 2-7 Frequency inputs for digital signals schematic ........................................... 18

Figure 2-8 Frequency Inputs for reluctance sensors schematic ................................... 19

Figure 2-9 Highside outputs with reverse polarity protection schematic ...................... 23

Figure 2-10 Highside outputs without reverse polarity protection schematic ............... 23

Figure 2-11 Safety controller schematic ....................................................................... 26

Figure 2-12 System basis chip schematic .................................................................... 26

Figure 2-13 Safety concept overview ........................................................................... 28

Figure 3-1 Housing mechanical drawing top in mm ..................................................... 30

Figure 3-2 Housing mechanical drawing front in mm ................................................... 30

Figure 3-3 Housing mechanical drawing side in mm .................................................... 30

Tables

Table 1-1 Key ECU characteristics ............................................................................... 8

Table 2-1 Digital Input configuration ............................................................................. 16

Table 2 Outputs Overview ............................................................................................ 20

Table 2-3 Outputs technical data ................................................................................. 24

Table 5-1 Pin allocation table ....................................................................................... 32




1 Introduction

This document describes the technical characteristic of the VC121-12 hardware. This

hardware is used for the VC121-12 for evaluation as well as for series projects. The first

chapter gives an overview of the interfaces. The following chapters go into detail on the

functional implementation of the layout, the housing including the connector and the

qualification tests.

Note

The information contained in this document may change without notice.

Note

VC121-12 is intended for evaluation and engineering purposes. For further information

regarding series usage please contact the Vector sales team.




1.1 Overview

The following block diagram and tables give an abstract overview of the interfaces and the

key characteristics of the VC121-12.

Figure 1-1 VC121-12 block diagram




1.2 ECU Technical Characteristics

The following table describes the key characteristics of the VC121-12.

Parameter Description

Main-CPU SPC56EC64, 120/80 MHz, Dual-Core, 1.5 MB Code

Flash, 4x16 kB Data-Flash, 192 kB RAM

Safety-CPU STM8AF62, 16 MHz, 32 kB Flash, 2 kB RAM

Interfaces 6 x CAN

2 x LIN

1 x FlexRay

1 x BroadR-Reach

Digital inputs 20 x 0…UBAT, diagnosable

Frequency inputs 4 x 0…UBAT, max. 20 kHz, diagnosable

4 x reluctance sensor inputs, max. 20 kHz

Analog inputs 8 x 0…5 V, 12 Bit, diagnosable

8 x 0…UBAT, 12 Bit, diagnosable

6 x 100 Ω…10 kΩ, 12 Bit, diagnosable

Digital outputs 2 x 6 A (High-side)

2 x 2.5 A (High-side)

4 x 200 mA (High-side)

short circuit protected, diagnosable

PWM outputs 12 x 2.5 A (High-side)

16 x 1 A (High-side)

4 x 200 mA (High-side)

short circuit protected, diagnosable

Operating voltage 8…16 V

Current consumption Max. 42 A

Dimensions 213 mm x 122 mm x 44 mm

Total weight 660 g

Operating temperature -40 °C…+85 °C

Qualification Approved according to the harmonized requirements of

German vehicle manufacturers

EMC / ESD OEM-harmonized requirements

Environmental compatibility ISO 16750 / LV 124

Degree of protection per DIN

EN 60529/ISO 20653

IP67 (sealed HW version)

IP40 (unsealed HW version)

Table 1-1 Key ECU characteristics




1.3 Important Notes

Safety Instructions

Caution To avoid personal injuries and damage to property you have to read and understand

the following safety instructions and hazard warnings prior to installation and use of

this ECU. Keep this documentation always near the ECU.

Proper Use and Intended Purpose

Caution The ECU is designed to provide a development platform for testing and evaluating

automotive specific software.

The ECU may only be operated (i) according to the instructions and descriptions of this

manual; (ii) with an electric power supply as defined in this manual; and (iii) with

accessories manufactured or approved by Vector.

The ECU is exclusively designed for use by professionals solely at research and

development facilities for research and development purposes.

The ECU may only be operated according to the instructions and descriptions of this

manual. The ECU is exclusively designed for use by skilled personnel as its operation

may result in serious personal injuries and damage to property. Therefore only those

persons may operate the ECU who have understood the possible effects of the actions

which may be caused by the ECU. Users have to be specifically trained in the handling

(e.g. calibration) with the ECU, the applied embedded software and the system

intended to be influenced. Users must have sufficient experience in using the ECU

safely.




Hazard Warnings

Caution The electronic control unit and its connected loads may get very hot due to high power

dissipation under full load.

The ECU may control and/or otherwise influence the behavior of control systems and

electronic control units. Serious hazards for life, body and property may arise, in

particular without limitation, by interventions in safety relevant systems (e.g. by

deactivation or otherwise manipulating the engine management, steering, airbag

and/or braking system) and/or if the ECU is operated in public areas (public traffic).

Therefore you must always ensure that the ECU is used in a safe manner. This

includes inter alia the ability to put the system in which the ECU is used into a safe

state at any time (e.g. by “emergency shutdown”), in particular without limitation in the

event of errors or hazards. Furthermore all technical safety and public law directives

which are relevant for the system in which the ECU is used must apply. Provided that

serious hazards for life, body and property may occur and before the use in public

areas the system in which the ECU is used must be tested according to recognized

rules of engineering in a non-public area.

Disclaimer

Caution Claims based on defects and liability claims against Vector are excluded to the extent

damages or errors are caused by improper use of the interface or use not according to

its intended purpose. The same applies to damages or error arising from insufficient

training or lack of experience of personnel using this electronic control unit.




2 Electrical Characteristics

This section describes the electronic design of the VC121-12 PCB in a functional block

(Functional Building Blocks, FBB) oriented way.

2.1 High-speed CAN

The VC121-12 can is available with six high speed CAN channels. An alternative

configuration with 4 highspeed CAN channels and two low speed CAN channels is possible

on request. Wakeup Communication on the CAN channels will lead to a wakeup of the

VC121-12.

Pads for CAN0 bus termination are provided but not populated. If termination is needed, two

resistors (61.9R, 1%, R1206) and one capacitor (4.7nF, 50V, C0603) have to be populated.

Data transfer rate CAN-HS: max. 1 Mbit/s

Data transfer rate CAN-LS: max. 125 kbit/s

Termination CAN-LS: 511 Ω

2.2 LIN

The VC121-12 contains two LIN 2.1 channels with baud rates up to 20 kBaud. The channels

are designed as LIN Masters. Communication on the LIN channels will lead to a wakeup of

the VC121-12. The wakeup ability of the System Basis Chip LIN channel is configurable.

Figure 2-1 LIN schematic




Data transfer rate: max. 20 kBaud

Master termination: 1 kΩ

Capacity to GND: 1 nF

2.3 FlexRay

The VC121-12 contains one dual channel FlexRay interface, for communication up to

20 Mbit/s. The use as two separate single channel FlexRay interfaces is not possible.

Communication on the FlexRay channels leads to a wakeup of the VC121-12. The

channels are terminated in the VC121-12 with R100.

Figure 2-2 FlexRay schematic

Data transfer rate: max. 20 Mbit/s

Termination: typ. 97.2 Ω

2.4 BroadR-Reach

This interface can be used for communication with up to 100 Mbit/s over an unshielded single

twisted pair connection. Configuration as BroadR-Reach master or slave through software

settings is possible.

The BroadR-Reach interface cannot wake up the ECU. The FBB uses an automotive

BroadR-Reach transceiver connected to the Fast Ethernet Controller of the Main Controller.

The MDC/MDIO-interface is used for transceiver configuration. A multistage filter and

balancing circuit is integrated in the data lines for EMC optimization and to help maintain a

stable connection.

Data transfer rate: max. 100 Mbit/s

Node configuration: Master or Slave




2.5 Analog Input 0…5 V

Diagnosable analog inputs to measure voltages between 0 and 5 V.

Errors on the analog input 0…5 V channels can be detected using a switchable pull-

upresistor and reduction of the measurement range. The errors that can be detected are

open wire, short circuit to ground and short circuit to supply voltage.

The analog input 0…5 V channels contain an internal ESD protection, a switchable pull up

resistor, a voltage divider and a low pass filter. The filtered signal is connected to an ADC

channel of the Main Controller. The figure below gives an overview about the structure of

one channel.

Figure 2-3 Analog Input 0…5 V schematic

Measurement range: 0.3…4.7 V (with diagnostics)

Measurement range: 0.0…5.0 V (w/o diagnostic functions)

Input resistance: 105 kΩ

Resolution with 12bit sampling: 1,3 mV

Accuracy: ±5 %

Cutoff frequency of input filter: 1.17 kHz

2.6 Analog Impedance Inputs

Diagnosable analog inputs for measuring the resistance of passive sensors like:

Reading signals from passive sensors like NTC or PTC temperature sensors, fill level

sensors and pressure sensors.

Reading low active digital signals with configurable threshold and hysteresis value.




Errors on the Analog Impedance Input channels can be detected by interpretation of values

outside the measurement range. The errors that can be detected are open wire, short circuit

to ground and short circuit to supply voltage.

The analog impedance input channels contain an internal ESD protection, a voltage divider

and a low pass filter. The filtered signal is connected to an ADC channel of the Main

Controller. The figure below gives an overview of the structure of one channel.

Figure 2-4 Analog impedance input schematic

Measurement range: 0.1…10 kΩ

Input resistance to ground: typ. 105 kΩ

Pull up resistance: typ. 2.2 kΩ

Reference voltage: typ. 5.0 V

2.7 Analog Inputs 0…18 V

Diagnosable analog inputs for measuring voltages between 0 and 18V. Channels AIN18 to

AIN21 are redundant channels and can be read by the Main Controller and the Safety

Controller for safety reasons.

Example of use:

Monitoring of voltages

Reading active sensors

Measuring safety critical signals on redundant channels

Reading digital signals with configurable threshold and hysteresis

Errors on the analog input 0…18 V channels can be detected by using a switchable pullup-

resistor and applying an appropriate interpretation to the reduced measurement range. The

errors that can be detected are open wire, short circuit to ground and short circuit to supply

voltage.

The analog input 0…18 V channels are built with an internal ESD protection, voltage divider

and low pass filter. The filtered signal is connected to an ADC channel of the Main Controller.

The channels AIN18 to AIN21 have redundant voltage dividers and low pass filters and are

connected to ADC channels of the Main and Safety Controller for safety critical signals.




Figure 2-5 Analog input 0…18 V schematic

Measurement range: 0.5…17.0 V (using diagnostic functions)

Measurement range: 0.0…18.0 V (without diagnostic functions)

Input resistance channels typ. 37 kΩ (AIN14 to AIN17)

Input resistance channels: typ.18.5 kΩ (AIN18 to AIN21)

Resolution with 12bit sampling: 4.5 mV

Accuracy: ±8 %

Cutoff frequency of input filter: 1.0 kHz

2.8 Digital Input 0…UBat

DIN0 to DIN19 are digital inputs for switches. Some channels support switches to ground,

others switches to battery level, and some both. Some channels have wakeup functionality

and some are redundant for safety use cases.




Error detection on the digital input channels is limited due to the fact that a short circuit is

electrically identical to a closed switch and that an open wire is essentially the same as an

open switch. Errors can only be detected using switchable current sources and logical

interpretation of implausible conditions in software.

The digital input channels contain ESD protection, current sources and sinks for biasing, and

a comparator with a fixed threshold of 4.0 V. The output of the comparator is directly

connected to a GPIO pin of the Main Controller or can be read via SPI.




Figure 2-6 Digital Input 0…UBat schematic

Redundant channels have a second comparator connected directly to the Safety

Controller.

Channels supporting wakeup functionality are connected to the Power Management. An

active Level on these channels will lead to a wakeup of the ECU.

Threshold: typ. 4.0 V

Input voltage: -14…40 V

Switch current on switch to ground inputs: typ. 4.0 mA

Switch current on switch to battery level inputs: typ. 2.1 mA

Wetting current on switch to ground inputs: 32 mA

Wetting current on switch to battery level inputs: typ. 15 mA

Note Due to the connection of the digital input IC via SPI a certain latency must be

considered when reading the digital inputs of the VC121-12.




2.9 Frequency inputs for digital signals

FIN0 to FIN3 are four frequency inputs for digital signals. The signals may be high or low

active and support frequencies up to 20 kHz.

Example of use:

Active speed sensors (camshaft sensors, wheel speed sensors, …)

PWM measurement

Frequency measurement

Errors can be detected through ground termination and a switchable pull-up-resistor.

Dependent on the used configuration, the errors that can be detected are open wire, short

circuit to ground and short circuit to supply voltage.

Each frequency input channel for digital signals contains a comparator with a fixed threshold

of 2.5 V. The output of the comparator is connected to an eMIOS channel of the Main

Controller with special timing and measurement functions. The channels contain ESD

protection, a termination resistor, a switchable pull up resistor and a low pass filter.

Figure 2-7 Frequency inputs for digital signals schematic

The sensors have to be connected between one of the Frequency input channels for digitals

signals and one of the ground or sensor ground pins. The sensor supplies can be used to

supply 5 V sensors. The input signal may have battery or 5 V level or use active switching to

ground. For a ground switching signal, the corresponding channel has to be configured as

low active in the frequency handler software module.

Frequency range: 0…20 kHz

Threshold: typ. 2.5 V

Nominal input voltage: 0 …18 V

Input resistance to ground: typ. 110 kΩ

Pull up resistor: typ. 4.7 kΩ




2.10 Frequency inputs for reluctance sensors

Description FIN4 to FIN7 are four frequency inputs for reluctance sensors with a frequency

up to 20 kHz.

Example of use:

Connection of reluctance sensors.

Errors can be detected using the switchable threshold of the comparator and a switchable

pull-up-resistor. Errors that can be detected are open wire or short circuit to supply voltage

and short circuit ground.

The frequency input channels for reluctance sensors contain a current source and a

comparator with hysteresis and a switchable threshold for diagnostic reasons. The output of

the comparator is connected to an eMIOS channel of the Main Controller with special timing

and measurement functions. The channels contain ESD protection, a termination resistor, a

switchable pull up resistor and a low pass filter.

Figure 2-8 Frequency Inputs for reluctance sensors schematic

Frequency range: 0…20 kHz

Input voltage: 0.25…225 V

Current source: typ. 11 µA

Pull up resistor: typ. 2.2 kΩ




2.11 Outputs

The VC121-12 provides 40 diagnosable high-side outputs with different current and PWM

capabilities. All channels are controlled by the Main Controller. In a fault condition of the ECU,

it is possible to enter off state by the safety management consisting of Safety Controller and

System Basis Chip.

Example of use:

Activation of constant or PWM controlled loads like

bulbs

valves

heater




Note The table above reflects a stable configuration implemented in software and used for

qualification measurements of the VC121-12. Higher current and PWM frequency

values may be used for some channels. Therefore an evaluation of the individual

configuration is strongly recommended, considering power dissipation, hotspots,

characteristic curves of connected loads’ and current capability of power domains in

worst case situations.

Caution There is neither automatic power limitation of single outputs nor is the sum of the

outputs’ currents limited. Therefore the user must take care that the maximum load of

the ECU, the maximum current of each power domain, and the maximum current of

each individual output channel are not exceeded.

The (external) PWM outputs of the ECU have a resolution of 256 steps. Therefore the duty

cycle can be set in = 0,390 % steps.

Caution

Note that one reference PWM channel affects the output frequency of multiple high side

output ICs.

For each output, the following errors can be detected:

Open-load (in on and off state, depending on the implementation of the software driver)

Short to battery voltage (if the duty cycle of the output is lower than a certain duty cycle)

Short to Ground (above a certain duty cycle)

Overload

Additionally the following failures can be detected per device:

Over temperature

Communication error

Fail safe error

Pwm low error

Note Stable error detection cannot be guaranteed while using PWM with very low or high

duty cycles, because the ON or OFF times may be too short for the implemented

diagnostic functions.




The channels OUT0...3, OUT12…31 and OUT36…39 are built with reverse polarity

protection and freewheeling diodes.

Figure 2-9 Highside outputs with reverse polarity protection schematic

The channels OUT4...11 and OUT32…35 are built without reverse polarity protection in order

to reduce voltage drop and power dissipation for these channels. Freewheeling diodes are

not integrated to these channels to avoid damage in case of reverse polarity connection.

Figure 2-10 Highside outputs without reverse polarity protection schematic

The VC121-12 contains safety shutoff circuitry to be able to react in fault conditions. All

outputs will be switched off within 70 ms if at least one of the core components detects a

fault condition.

Reasons for entering safety shutoff are over or under voltage of the Main Controller supply

and trigger errors of the window watchdog. Additional monitoring may be implemented for

Safety Controller and ECU supply, mismatches on redundant inputs or similar.

As a safety feature the high side output devices of the VC121-12 monitor the SPI

communication and require the chip select line to be periodically toggled within a specified

time. If toggling does not occur the devices will automatically switch off the outputs and go

to a failsafe mode.




Parameter Min. Typ. Max. Unit

General

Sum of current of connected loads 42 A

Current per power domain KL30x 10 A

OFF-state output current 0 5 µA

Open-load OFF-state voltage

detection threshold UBAT - 1.5 V

Current for open-load detection at

OFF-state 0.3 0.8 1.5 mA

PWM resolution 8 bit

0.2 A Outputs

On-state resistance 105 240 mΩ

Turn-on voltage slope 0.5 V/µs

Turn-off voltage slope 0.8 V/µs

Open-load on-state detection

threshold low level configuration 3 10 17 mA


threshold high level configuration 30 100 170 mA

1.0 A and 2.5 A Outputs with the exception of OUT32 and OUT33








OUT32 and OUT33











6.0 A Outputs

2.12.1 Main Controller

The SPC56EC64 of STMicroelectronics is a 32-bit dual core controller with maximum 120

MHz and 60 MHz clock frequencies. The controller has a code flash memory of 1.5 MB and

a SRAM of 192 kB. It handles all inputs, outputs and communication interfaces. The

peripheries are connected over SPI, GPIO pins or peripheral dependent hardware modules

of the controller.

2.12.2 Safety Controller

The safety controller is an STM8A controller with a 16 MHz clock. It is an 8-bit controller with

a size of 32 kB and a RAM of 2 kB.

The safety controller redundantly reads some input signals to the main controller in order to

verify the values. These channels can be used for critical signals, where double checking of

the values is necessary.

The safety controller supervises the supply voltages of the ECU and the main controller and

can set the outputs to the defined safe state “off”.

The communication with the main controller is handled via a dedicated SPI interface and a

sync wire. The sync wire can be used to synchronize reading of input values and the SPI

interface to share the results and to implement other safety mechanisms.




Figure 2-11 Safety controller schematic

2.12.3 System Basis Chip

The VC121-12 contains a MCZ33905CS5 System Basis Chip from Freescale Semiconductor.

The Chip includes functions for observation and Power Management, the voltage regulator

for the Main Controller and the transceivers for LIN0 and CAN0 channels.

Figure 2-12 System basis chip schematic

The System Basis Chip regulates and observers the supply voltage of the Main Controller.

The supply voltage is activated by a wakeup event through the Power Management and

switched off in Sleep Mode of the VC121-12. Entering Sleep Mode is controlled by the Main

Controller Software.

In fault conditions the System Basis Chip tries to restart the Main Controller through reset

generation. If the fault condition is not solved, the supply of the Main Controller is switched




off eight seconds after last traffic on CAN0 channel. For debugging reasons this behavior

can be disabled. See section Debug Mode for further information on this topic.

A Window Watchdog is included in the System Basis Chip to observe the correct operation

of the Main Controller. If the watchdog is not triggered within the defined time windows a

reset signal is generated except working in Debug Mode.

If the supply voltage of the Main Controller is out of nominal range, the reset signal is pulled

low to prevent undefined behavior of the Main Controller.

CAN and LIN Transceivers for CAN0 and LIN0 are integrated in the System Basis Chip. The

transceivers can be configured by the Main Controller through SPI commands. For further

information about the System Basis Chip refer to the MCZ33905CS5 datasheets from

Freescale Semiconductor.

2.12.4 Safety Concept

The safety concept ensures a reliable behavior of the ECU through:

Redundant power supply

Independent supply for Main Controller and Safety Controller

Crosswise voltage observation

Redundant reading of diverse inputs

Window Watchdog

Outputs safety shutoff




KL30A

KL30B

2 diverse digital

inputs

Figure 2-13 Safety concept overview

The core components are redundantly supplied by KL30A and KL30B. In case of a single

failure in the supply chain (e.g. like a broken or shorted wire) the core components are still

supplied by the other path.

The supplies of the Main Controller and the Safety Controller are independent. So a fault on

one supply will not lead to a failure of the whole ECU and at least error detection and safety

shutoff is still possible.

The Main Controller and the Safety Controller monitors the input voltage of each other and

the input voltage of the VC121-12. The supply voltage of the Safety Controller is also

monitored by a reset controller which pulls the reset signal to low if the supply voltage is out

of nominal range. The System Basis Chip observes the supply voltage of the Main Controller

and controls its Reset Signal.

The VC121-12 has four analog and two digital inputs which are built redundant and read over

the Main Controller and the Safety Controller to verify the measure results. The analog to

digital conversation of the values can be synchronized through a sync wire between Safety

Controller and Main Controller to get coincident values even for severely alternating input

signals. The results of Main Controller and Safety Controller are exchanged through SPI

interface.




The following inputs can be read redundantly:

Terminal 30A

Terminal 30B

AIN_18

AIN_19

AIN_20

AIN_21

DIN_18

DIN_19

Note Due to the fact that the communication between main controller and safety controller is

handled via SPI a certain latency must be considered.

The System Basis Chip has an integrated window watchdog which monitors the timing of the

Main Controller. The watchdog has to be triggered by the Main Controller via SPI commands

in a defined time window. If the watchdog is not triggered as specified, it generates a reset

to enforce a restart of the Main Controller.

All outputs are controlled by the Main Controller through SPI commands. If a fault is detected

by one of the core components, all high side driver can be shutoff independent of the Main

Controller commands to prevent critical behavior. The dominant state is safety shutoff, so if

at least one core component demands shutoff all high side drivers are switched off.




3 Mechanical Characteristics

This section describes the housing and connector of the VC121-12.

Connector: Tyco 1473244 (81 pins), Tyco 1473252 (40 pins)

Size: 213 mm x 122 mm x 44 mm

Weight: 660 g

IP protection class: IP67 (sealed hardware version)

IP40 (unsealed hardware version)

Figure 3-1 Housing mechanical drawing top in mm

Figure 3-2 Housing mechanical drawing front in mm

Figure 3-3 Housing mechanical drawing side in mm




4 Qualification

The qualification of Vector ECUs is executed by accredited test labs, according to

international standards. Further details on the performed tests are described in the VC12112

test report see [1].

4.1 Configuration

The qualification of the VC121-12 design has been performed with the CAN low speed

variant of the ECU.

Note The customer has to be aware that any change in the electronic design like population

variants, less population, or the change of electronic component values leads to a

deviation from the original verified ECU design.




5 Appendix

5.1 Pin Allocation Table

Pin Name Function Pin Name Function

1 GND Ground 27 AIN16 Analog Input 0..18V

2 OUT2 Digital Output 2.5A 28 AIN17 Analog Input 0..18V

3 OUT1 PWM Output 2.5A 29 AIN13 Resistance Input

4 KL30A Supply 30 AIN12 Resistance Input

5 KL30B Supply 31 AIN8 Resistance Input

6 CAN3_L CAN 32 AIN9 Resistance Input

7 CAN3_H CAN 33 AIN11 Resistance Input

8 OUT10 PWM Output 2.5A 34 AIN10 Resistance Input

9 OUT11 PWM Output 2.5A 35 CAN5_L CAN

10 FRA_BM FlexRay Ch. A BM 36 CAN5_H CAN

11 FRA_BP FlexRay Ch. A BP 37 VCC_SS1 +5V Sensor Supply

12 FRB_BM FlexRay Ch. B BM 38 GND Sensor Ground

13 FRB_BP FlexRay Ch. B BP 39 OUT0 PWM Output 1A

14 OUT8 PWM Output 1A 40 VCC_SS2 +5V Sensor Supply

15 OUT9 PWM Output 1A 41 GND Sensor Ground

16 OUT7 PWM Output 2.5A 42 CAN2_L CAN

17 OUT4 PWM Output 1A 43 CAN2_H CAN

18 OUT6 PWM Output 1A 44 DIN14 Digital Input

19 OUT5 PWM Output 1A 45 DIN12 Digital Input

20 OUT3 PWM Output 2.5A 46 DIN9 Digital Input

21 CAN1_L CAN 47 DIN8 Digital Input

22 CAN1_H CAN 48 DIN2 Digital Input

23 CAN0_L CAN 49 DIN0 Digital Input

24 CAN0_H CAN 50 AIN19 Analog Input 0..18V

25 AIN14 Analog Input 0..18V 51 AIN21 Analog Input 0..18V

26 AIN15 Analog Input 0..18V 52 AIN6 Analog Input 0..5V

53 AIN5 Analog Input 0..5V 88 OUT27 PWM Output 2.5A






56 FIN3 Frequency Input 91 OUT17 PWM Output 1A

57 FIN0 Frequency Input 92 OUT19 PWM Output 2.5A

58 FIN4 Ind. Frequency Input 93 OUT16 PWM Output 1A

59 FIN7 Ind. Frequency Input 94 OUT29 PWM Output 1A

60 OUT14 Digital Output 200mA 95 OUT28 PWM Output 1A


62 LIN 1 LIN 97 OUT24 PWM Output 1A

63 DIN19 Digital Input 98 DIN18 Digital Input






69 AIN18 Analog Input 0..18V 104 OUT38 PWM Output 200mA

70 AIN20 Analog Input 0..18V 105 OUT39 PWM Output 200mA

71 AIN7 Analog Input 0..5V 106 CAN4_H CAN

72 AIN4 Analog Input 0..5V 107 CAN4_L CAN

73 AIN3 Analog Input 0..5V 108 DIN16 Digital Input

74 AIN1 Analog Input 0..5V 109 BR_N BroadR-Reach®

75 FIN2 Frequency Input 110 BR_P BroadR-Reach®

76 FIN1 Frequency Input 111 DIN7 Digital Input

77 FIN5 Ind. Frequency Input 112 OUT37 PWM Output 200mA

78 FIN6 Ind. Frequency Input 113 OUT36 PWM Output 200mA

79 OUT13 Digital Output 200mA 114 GND GND


81 LIN0 LIN 116 OUT35 Digital Output 6A

82 OUT23 PWM Output 2.5A 117 OUT32 PWM Output 1A

83 OUT22 PWM Output 2.5A 118 OUT34 Digital Output 6A

84 OUT21 PWM Output 1A 119 KL30C Supply

85 OUT20 PWM Output 1A 120 KL30D Supply

86 OUT31 PWM Output 2.5A 121 KL30E Supply

87 OUT30 PWM Output 2.5A Table 5-1 Pin allocation table




6 Glossary and Abbreviations

6.1 Glossary

Term Description

Functional Building

Block An electronic component representing a specific functionality. It consists

not only of the schematic but also of further documentation.

6.2 Abbreviations

Abbreviation Description

FBB Functional Building Block

ESD Electrostatic discharge

EMC Electromagnetic compatibility

HW Hardware

ECU Electronic Control Unit

SBC System Basis Chip

RTC Real time clock

PCB Printed Circuit Board

µC Microcontroller

CAN Controller Area Network

LIN Local Interconnect Network

ROM Read Only Memory

RAM Random Access Memory

SPI Serial Parallel Interface

CP Control Pilot

PE Protective Earth

PP Plug Present or Proximity Pilot




7 Contact

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