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Many ideas one solution

EVBavr02 evaluation board for AVR microcontrollers

ATtiny2313 i AT90S1200/2313

User`s manual

REV 1.0

2

1. Introduction

EVBavr02 is a development board designer for the hobbyist and engineers who want to quickly prototype their system based on AVR microcontrollers from Atmel. Developer has access to all pins of the micro, which are brought to the header (pin connectors) and labeled accordingly. Depending upon the board s̀ configuration (listed versions) some or all of the following components are found on the board: thermometer, potentiometer, relay, buzzer, RTC (real time clock) and LCD display (2x16). The pin headers provided allow easy access to all these components. In addition, there are eight micro-switches and eight diodes which could be connected to any of the pin connectors or additional components, which may be placed on the large, adjacent prototype area. The power circuitry on board (bridge, voltage regulator) eliminates the need for an external regulated power supply. This board comes with the several examples of the C code routines (source from), to facilitate testing and quick development in using the board s̀ resources.

We wish great success and full satisfaction while designing and constructing appliances based on EVBavr02.

3

2. Board layout.

1. Prototype area. 2. Additional components connector. 3. LED s̀ and micro-switches 4. Potentiometr 5. RESET switch 6. Accumulator 3V6. 7. Speaker 8. Programmer header. 9. Power ON/OFF switch. 10. Input power jack (AC/DC). 11. Relay header. 12. 1-wire port. 13. RS 232 port 14. Dual header – port A, port B. 15. Real Time Clock DS1307. 16. LM317 voltage regulator. 17. LCD display (optional). 18. 7-segment LED.

4

3. Supported processors

AT90S1200 AT90S2313 ATtiny2313/V

FLASH 1k 2k 2k

SRAM - 128b 128b

EEPROM 64b 128b 128b

Pheripherals

• 8-bit Timer/Counter,

• Analog comparator,

• SPI, • Programmable

timer Watchdog with integrated oscillator.

• 8-bit Timer/Counter,

• 16-bit Timer/Counter,

• Analog komparator,

• Programmable timer Watchdog,

• SPI, • Full Duplex

UART

• 8-bit Tirem/Counter, • 16-bit licznik, • Analog komparator • programmable

Watchdog, • SPI, • USI • Full Duplex UART

Supply voltage 2.7-6.0V ver.4

4.0-6.0V ver.12

2.7-6.0V ver.4

4.0-6.0V ver.10

1.8 - 5.5V (ATtiny2313V)

2.7 - 5.5V (ATtiny2313)

Clock frequency 0-4 MHz ver.4

0-12 MHz ver.12

0-4 MHz ver.4

0-10 MHz ver.10

ATtiny2313V:

0 - 4 MHz @ 1.8 - 5.5V,

0 - 10 MHz @ 2.7 - 5.5V

ATtiny2313:

0 - 10 MHz @ 2.7 - 5.5V, 0 - 20 MHz @ 4.5 - 5.5V

Temperature range -40° ÷ + 85°C

Cases 20-pin PDIP, SOI, SSOP

20-pin PDIP i SOIC 20-pin PDIP i SOIC

4. Power supply for board Recommended external power supply voltage is 7-12V AC, or 9-15V DC. A standard power jack (bolt diameter 2.1mm - negative) is provided at the edge of the board. Stabilized voltage VTG is available on the double header and on the prototype area of the board. The selection of the VTG is provided through a 3V3 header. The default voltage VTG is 5V DC (no jumper on 3V3 header). By placing a jumper VTG becomes 3.3 VDC. The SUPPLY header allows for direct access to the power jack input. Placing a jumper bypasses the bridge and voltage regulator.

5

5. Peripheral circuits 5.1. LEDs The board has 8 LED diodes, which make the simplest interface between the system and the user. This is especially useful for the beginners, who want to manipulate or debug their program with different hardware configurations. The diode turns on after grounding of the associated Ldn (n = 0 – 8) pin.

Figure 1. LED diodes

5.2. Switches The board is equipped with 8 micro-switches. Pressing one of them causes grounding of the corresponding pin on the SW header.

Figure 2. Switches

6

5.3. Relay Acces to the relay circuitry consist of the REL pin of the MISC header and pins: NC,NO,COM of the relay header. REL pin is indirectly connected to the base of the transistor. Logic level 1 (5 or 3.3V DC) applied to the REL pin, will activate the relay. External circuits can be controlled via NC, NO, COM I/O pins.

Figure 3. Relay schematic

5.4. Acoustics indicator (speaker) The board has an acoustic indicator turned on and off by the transistor. The base of the transistor is connected to the SPK pin of the MISC header. Logic level 1̀ ̀(5 or 3.3V DC) applied to the SPK pin, will activate the speaker.

Figure 4. Implementation of acoustic indicator

5.5.Potentiometer The board is equipped with one potentiometer, allowing for simulation of the analog circuit outputs. The potentiometer enables the adjustmet of voltage in the range 0-VTG. The potentiometer output is accessible on ADJ pin of the MISC connector.

7

Figure 5. Potentiometer

5.6.Siedmiosegmentowe wy�wietlacze LED The board is equipped with four 7-segment led display. They make an interface bettwen the system and the user, allowed to display up to four chars.

Figure 6. Implementation of 7-segment LED

5.7.RS232 Interface There is a DB-9 connector on the board, connected with the ST3232 state converter. On the other side of the converter there are pin connectors with converter circuit terminals, allowing to plug in to the processor. 5.8. 1-WIRE Interface. There is a 1-wire connector on the board, which allow to connect i.e. DS1820 thermometer. In this way we can measure temperature. 5.9. Real Time Clock DS1307 The board has one real time clock with accumulator 3V6 9teh board ca be also supply form accumulator). The clock communicates with the micro through the I2C interface. All the connections needed for controlling the DS1307 circuit are brought out to the Rtc pin header. The accumulator pin is also placed on the header.

8

5.10. LCD display The board has one LCD display interface. The LCD connector has four data lines and two control lines: strobe line E and control line R/S. The dispaly R/W line is permanently connected to ground; all other lines are available at the pin header. The adjustmet of contrast id done by two way:

• by potentiometr ADJ CONT which output pin ADJC must be then connected with LCD s̀ pin CONT.

• programmable,then LCD s̀ pin CONT must be connected to the processor. 5.11. Potentiometer ADJ CONT There is a ADJ CONT potentiometer, which allows to control the contrast on LCD. Then output pin ADJC must be connected with LCD s̀ pin CONT. 5.12. 3V3 potentiometer. The board is equipped with one potentiometer, alowing to regulate voltage VTG between 3.3 – 1,25 V ( even if 3V3 jumper is closed). 6.Header and connectors

6.1.Procesor and pheripherals connectors

Procesor pins description Vproc- procesor voltage supply GND – ground RST – reset XT1- clock input XT2- clock output RST,XT1,XT2 – when not connected, may be used as signal pins PB0...PB7 – procesor port B PD0...PD6 – procesor port D

Figure 7. Procesor connector

7-segment LED pins A0...A3 – anodes supply A,B,C,D,E,F,DP – segments supply (description on the board)

Figure 8.7-segment LED connector

9

RS232 pins RxD, TPD – RS232 signals

Figure 9. RS232 connector

Real Time Clock pins VBAT – accumulator FT – real time clock operation correction line SDA – I2C real time clock interface data line SCL – I2C real time clock interface clock line

Figure 10. RTC connector

MISC pins

SPK – speaker ADJ – potentiometer REL – relay control pin WIRE – 1-WIRE signal

Figure 11. MISC connector

LED diodes pins LD0...7 – diodes Switches pins SW0...7 – micro-switches

Figure 12.Diodes and switches

6.2.LCD display connector

LCD ADJC – ADJ CONT potentiometer pin CONT – contrast line LCD R/S – control line LCD data/order E – strobe line LCD D4,D5,D6,D7 – LCD data lines

Figure 13. LCD connector

10

6.3.Relay connector

NO – normally open NC – normally closed CON – common

Figure 14. Relay connector.

6.4. Programmer`s connector

GND – ground VTG – voltage supply PB6 – data input line MISO PB7 – programmator s̀ clock line SCK RESET – reset LED – line connected with diode LED. During proggraming the diode is lighting. PB5 – programator s̀ output data line MOSI

Figure 15. ISP programmer`s connector

7. 7. Jumpers, supply LED and reset.

Jumper name Function

Jumper SUPPLY shorted regulated voltage is provided from local power circuitry, open voltage comes from the external power supply.

Jumper 3V3 jumper shorted power is 3.3V, open 5V.

Jumper RESET when is closed, allowed to causes hardware reset

Jumpers XT1 i XT2 allow to choose the source of the processor s̀ clock signal. When it is quartz-controlled, both jumpers should be disconnected. Shorted allowes for the external clock to the processor..

Jumper Load shorted causes loading an accumulator 3V6.

Jumper S1 shorted causes that all board is supplied from accumulator 3V6 (except processor).

Jumper S2 when is closed, the processor is supplied from accumulator.

ISP LED is lighting during the prorammator work.

11

POWER led power LED indicator.

RESET pressing this button causes hardware reset.

8. Demo programs.

• LCD.c demo of LCD display, there is a moving sign on the display saying "EVBavr02"

• TERMOMETR.c temperature measurement in [C], the result is displayed on LCD • RTC.c demo of real time clock, the program displays the current date in the form:

hour : min : day : month : year. The update of the clock settings using the keyboard. Microcontroller's port lines should be connected with the appropriate lines SDL and SCL in circuit DS1307 led to pin connectors.

• LED.c demo of LEDs, four functions chosen from the keyboard, each one causes a different light effect on the diodes.

9. Available versions. The set EVBavr02 is sold in three versions: Basic, Standard and Advance. Custom orders are also available. The set System EVBavr02 Basic includes:

• EVBavr02 board, which includes: processor, all connectors, four 7-segment LEDs, diodes, switches, transmitter,relay, buzzer.

• Cables to connect peripheral devices • CD-ROM with manuals and software

The set System EVBavr02 Standard includes:

• EVBavr02 board, which includes: processor, all connectors, four 7-segment LEDs,diodes, switches, transmitter, relay, buzzer, potentiometer, DS1820 thermometer, RTC with 3.6V accumulator.

• Cables to connect peripheral devices • CD-ROM with manuals and software

The set System EVBavr02 Advance includes:

• EVBavr02 board, which includes: processor, all connectors, four 7-segment LEDs,diodes, switches, transmitter, relay, buzzer, potentiometer, DS1820 thermometer, RTC with 3.6V accumulator, LCD 2x16.

• Cables to connect peripheral devices • CD-ROM with manuals and software

12

10. Schematic

RESET1

XTAL24

XTAL15

GND10

VCC 20

PD02

PD13

PD2/INT06

PD37

PD4/T08

PD59

PD6 11PB0/AIN0 12PB1/AIN1 13PB2 14PB3 15PB4 16PB5/MOSI 17PB6/MISO 18PB7/SCK 19

U1

AT90S1200/2313/ATtiny2313

Vproc

PB3

PB0

PB2

PB4

PB1

RESET

PD6

PD2

PD5

PD3PD4

PD0PD1 PB6

PB5

PB7

D2LED

D3LED

R91k

R101k

VTGVTG

D4LED

R111k

VTG

D5LED

R121k

VTG

L0

L1

L2

L3

D6LED

L0

D7LED

L1

R131k

L2

R141k

L3

VTG

1 23 45 67 8

JP2

LED

VTG

L7

D8LED

L6

R151k

L5

VTG

L4

D9LED

R161k

RESET

VTG

RESETSW-PB

L4

GND

L5

C1100n

L6

L7

GND

GND

VTG

R2

4k7SPK

Q1BC 557

SPK

R4ADJ

GND

VTG

AD

J1

OUT2 IN 3

REG1LM317

R171k3

R83k9

+ C5100u

+ C6470u/16V

GNDGND

C2100n

SWH_2

3V3

SWH_1

SUPPLY

GND

GNDSW10

SW SPST

GND

123

JP_S1VCC_IN

R71k

VTG

GND

C3100n

GND 4

1

3

2

B1

BRIDGE1

+

C9330n

+C12330n

+

C13330n

+

C10330n

+

C11100n

GND

GND

C1+1

V+2

C1-3

C2+4

C2-5

V-6

T2out7

R2in8 R2out 9T2in 10T1in 11R1out 12R1in 13T1out 14GND 15VCC 16U3

ST3232594837261

JP15

RS 232C

GND

VTG

GND

GND

TxDRxD

12

JP1

RS232

RxDTxD

VTG

GND

R3

4k7REL1

RE

L2

RE

L3

REL4

Q2BC 857

RL1RELAY

D1

ADJSP K REL1

1 23 45 67 89 10

JP6

ISP

PB5

RESET

PB7

PB6

GND

SW1SW-PB

SW2SW-PB

SW0SW-PB

R2410k

R2310k

R2510k

VTG VTG VTG

GND GND GND

SW3SW-PB

R2610k

VTG

GND

SW0

SW1

SW2

SW3

1 23 45 67 89 1011 1213 1415 1617 1819 20

JP8

PROC

RESETPD0PD1

XTAL1PD2PD3PD4PD5

VprocPB7PB6PB5PB4PB3PB2PB1PB0PD6

D714 D613 D512 D411 D310 D29 D18 D07 E6 R/W5 R/S4 KONTR3 Vcc2 GND1

16 15

JP4

LCD 2X16

GNDVTG

GND

(optional)

R471k

GND

VTG

Vss4 Vbat3 OSCO2 OSCI1 Vcc 8

FT/OUT 7

SCL 6

SDA 5

U2

DS1307

Y132.768kHz

GND

R194.7k

R204.7k

R214.7k

VTG

BT1AKU3V6

FTSCLSDA

GND

VTG

C4100n

GND

1 23 4

JP14

RTC

SDAFT

SCL

R6510

VTG

C822p

C722p

GNDGND

JP10 JP11

X18MHz

XTAL1XTAL2

XTAL2XTAL1

R14k7

VTG

R28100R

R272k2

VTG

GND

123

JP9

1-WIRE

VTG

WIR

E

WIRE

XTAL2

D11ISP

D10POWER

REL3REL4

REL2 123

JP21

REL1

SW4SW-PB

R3010k

VTG

GND

SW4

SW5SW-PB

R3110k

VTG

GND

SW5

SW6SW-PB

R3210k

VTG

GND

SW6

SW7SW-PB

R3310k

VTG

GND

SW7

SW3SW1

SW2SW0 1 2

3 45 67 8

JP7

SW

SW7SW6SW5SW4

Vpr

oc VTG

R22

75

D13

SM5819

D12

SM5819

Load

VTG

11

22

44

55

66

77

99

1010

33

88

LED_7SEG

D17LED3

11

22

44

55

66

77

99

1010

33

88

LED_7SEG

D16LED2

11

22

44

55

66

77

99

1010

33

88

LED_7SEG

D15LED1

11

22

44

55

66

77

99

1010

33

88

LED_7SEG

D14LED0

VTG

Q6BC 327

VTG

Q5BC 327

VTG

Q4BC 327

VTG

Q3BC 327

R42

2k2

R36

2k2

R35

2k2

R34

2k2

A0

A1

A2

A3

GFABEDC

DP

GFABEDC

DP

GFABEDC

DP

GFABEDC

DP

A0A2

A1A3

G F

A B

E D

C DP

R37

330

R38

330

R39

330

R40

330

R41

330

R43

330

R44

330

R45

330

R183V3POT

GND

VTG

Q7BC 817

GND

R46

1k

1 23 45 67 89 10

JP5

LCD

R57k5

C16100n

VTG

1 23 45 67 89 1011 12

JP13

7SEG

R49360

1 23 4

JP3

MISC

VB

AT

VBAT

VTG

Vproc

S1SW SPDT

SWH_3JRST

R53 100

R50 100

R51 100

R52 100

R54

100

R55

100

R56

100

R57

100

R58

100

R59

100

R61

100

R60

100

GND

GND

C14100n

GND

R29

100 R6210k

VTG

R63

10kVTG

LEDS

SWITCH

1 WIRE

OSCILATOR

MCU RESET SPEAKER RES.ADJ. RELAY LCD CONNECTORS

POWER LED7-SEGMENT LED

RTC RS232

REGLM317

VTG

SWH_4

GND

SWH_5

VTGGND GND VTG VTG

ADJ

1 of 1 1.00

http://www.propox.comemail: support@propox.com

Size: File : Rev:

Date : 06-01-2006

Title: EVBAVR-02-XXX (AVR Evaluation Borard)