esk32-a2a31 2.8 inch tft lcd module user manual e 4. lcd mod le + expansion boa d + sta te kit ........

ESK32-A2A31 2.8 Inch TFT LCD ModuleUser Manual

Revision: V1.00 Date: �e��a�� 0�� 01��e��a�� 0�� 01�

Rev. 1.00 � of 1� �e��a�� 0�� 01�

ESK3�-A�A31 �.� Inch T�T LCD Mod�leUse� Man�al

Table of Contents

Table of Contents1 Introduction ............................................................................................................. 5

2 Hardware Layout ..................................................................................................... 5Comm�nication Inte�face Switch – SW1 .......................................................................................... 6Extension Connecto� – CN� ............................................................................................................. 6

3 Using the Module .................................................................................................... 7Tool P�epa�ation ..................................................................................................................... 7LCD Mod�le Setting ............................................................................................................... 7Expansion Boa�d Setting ....................................................................................................... 7Boa�d Assem�l� ..................................................................................................................... 9O�tain the Example P�og�am ................................................................................................ 9Compile and Exec�te the P�og�am ...................................................................................... 10

4 Schematics ............................................................................................................ 10�.� Inches T�T LCD Mod�le – ESK3�-A�A31.................................................................................11

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List of Tables

List of TablesTa�le 1. Comm�nication Inte�face Switch SW1 ........................................................................................ 6Ta�le �. Extension Connecto� CN� ........................................................................................................... 6Ta�le 3. Expansion Boa�d EBI Inte�face Switches .................................................................................... �

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List of Figures

List of Figures�ig��e 1. T�T LCD Mod�le La�o�t ........................................................................................................... 5�ig��e �. Extension Connecto� CN� ......................................................................................................... 6�ig��e 3. LCD Mod�le Comm�nication Inte�face Setting ......................................................................... 7�ig��e 4. LCD Mod�le + Expansion Boa�d + Sta�te� Kit ........................................................................... 9�ig��e 5. HT3� �i�mwa�e Li��a�� Download We� Link ........................................................................... 10�ig��e 6. �.� Inches T�T LCD Mod�le (ESK3�-A�A31) Schematic ........................................................11

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Introduction

1 IntroductionThe ESK32-A2A31 TFT LCD Module is designed for the HT32 series expansion board. It supports SPI and EBI communication interfaces. The ESK32-A2A31 hardware and software can be used with the ESK32-20001/ESK32-21001 and the HT32 firmware library, providing users with a complete development environment with which to learn how to use the EBI and SPI interfaces.

Specifications:

▆ Use Himax’s TFT LCD driver IC: HX8347-I (T) ▆ 2.8 inch TFT LCD with 65 K colours and 320×240 resolutions ▆ Supports SPI and EBI interfaces

2 Hardware Layout

Figure 1. TFT LCD Module Layout

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Hardw

are Layout

Communication Interface Switch – SW1Table 1. Communication Interface Switch SW1

Switch No.Description

1 2 3 40 0 0 x �0�0 MCU 16-�it pa�allel1 0 0 x �0�0 MCU �-�it pa�allelID 0 1 x 3-wi�e se�ial inte�facex 1 1 x 4-wi�e se�ial inte�face

x: Don‘t ca�e

Extension Connector – CN2

Figure 2. Extension Connector CN2

Table 2. Extension Connector CN2Pin No. Description Pin No. Description

1 VDD5 � GND3 BL_EN 4 NC5 NC 6 WR/SCL7 MISO � MOSI9 /CS 10 NC11 NC 1� /Reset13 GND 14 VDD3315 PD0 16 PD117 PD� 1� PD319 PD4 �0 PD5�1 PD6 �� PD7�3 PD� �4 PD9�5 PD10 �6 PD11�7 PD1� �� PD13�9 PD14 30 PD1531 PD16 3� PD1733 /RD 34 RS

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Using the M

odule

3 Using the Module

Tool PreparationUsers need to prepare the HT32 Series expansion board (ESK32-2x001) and the Starter Kit (ESK32-30xxx)

LCD Module SettingBefore adjusting the communication interface using SW1, refer to the following descriptions and figure 3 for the LCD module setting details.

If the MCU uses the EBI interface to drive the LCD module, the LCD module should be selected to be in the EBI mode by switching SW1 of the LCD module to “0000” (default setting).

If the MCU uses the SPI interface to drive the LCD module, the LCD module should be selected to be in the SPI mode by switching SW1 of the LCD module to “0010”.

Figure 3. LCD Module Communication Interface Setting

Expansion Board SettingThe expansion board settings, J1, J2 and J3 are associated with the LCD module, refer to table 3 for more details. Refer to the “ESK32-2x001 Expansion Board User Manual” for details on using this expansion board.

J1: This is used to select whether the LCD Backlight is controlled by the MCU I/O pins or not. When the MCU I/O pins are insufficient, J1 can be switched to the BL_ON position, ensuring that the LCD Backlight is always on.

J2: This is used for the EBI interface read operation and determines the MCU EBI OE pin is connected to the nRD pin of the LCD module or not. When the LCD module needs to read back the registers or display the RAM, J2 should be switched to OE.

J3: If the MCU supports the EBI interface, then J3 should be open, otherwise J3 should be shorted.

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Using the M

odule

Table 3. Expansion Board EBI Interface SwitchesJumpers Descriptions

J1

LCD Backlight will alwa�s �e on

LCD Backlight cont�olled �� I/O pin

J�

The LCD mod�le nRD pin is switched to the EBI OE pin

The LCD module nRD pin is switched to a fixed pull high

J3

Sho�t: LCD SPI mode

Open: LCD EBI mode

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Using the M

odule

Board AssemblyThe HT32 series expansion board (ESK32-2x001) is connected to the Starter Kit and the 2.8 inch LCD module, as shown in figure 4.

Figure 4. LCD Module + Expansion Board + Starter Kit

Obtain the Example ProgramDownload the latest Holtek HT32 Firmware Library. The download web link is shown in figure 5. Unzip the HT32 Firmware Library after downloading.

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Schematics

Figure 5. HT32 Firmware Library Download Web Link

Compile and Execute the ProgramOpen the LCD example project:

Keil: \example\LCD\LCD28\MDK_ARMvx\Project_xxxxx.uvprojx

IAR: \example\LCD\LCD28\EWARMvx\Project_xxxxx.eww

Compile and execute the LCD example program after which, “Holtek HT32 Series LCD Example” will appear on the LCD.

4 SchematicsThis section shows the LCD module circuitry.

2.8 Inches TFT LCD Module – ESK32-A2A31

Mount only for SPI interfaceMount only for parallel interface

0 0 0 80-System 16-bit ⅠIM2 IM1 IM0 Interface Mode

0 0 1 80-System 8-bit Ⅰ 1 0 ID 3-Wire serial Ⅰ 1 1 X 4-Wire serial Ⅰ

LE

D_A

PD

0P

D1

PD

2P

D3

PD

4P

D5

PD

6P

D7

PD

8P

D9

PD

11

PD

12

PD

13

PD

14

PD

15

PD

16

PD

17

SD

I

WR

/SC

L/R

D

/RE

SE

T

RS

/CS

WR/SCL

/CS

/RD

RS

EN

/CS

PD0PD2PD4PD6PD8PD10PD12PD14PD16/RD RS

PD17PD15PD13PD11PD9PD7PD5PD3PD1

/RESET

WR/SCLSDISDO

SD

O

LE

D_K

1LE

D_K

2LE

D_K

3LE

D_K

4

PD

10

PD

15

PD

14

PD

13

PD

12

PD

11

PD

10

PD

9P

D8

PD

7P

D6

PD

5P

D4

PD

3P

D2

PD

1P

D0

PD

16

PD

17

LED_A

EN

LED_K1

LED_K2

LED_K3

LED_K4

VDD33VDD33

VDD33

VDD33

RN1

RP4K7

RN1

RP4K7

18

27

36

45

R3

10K/5%/0603

R3

10K/5%/0603

R8 75/5%/0603R8 75/5%/0603

C3

1uF/0603

C3

1uF/0603

C2 1uF/0603C2 1uF/0603

R1

4K

7/0

603

R1

4K

7/0

603

R11 75/5%/0603R11 75/5%/0603

R74K7/0603R74K7/0603

U1

HT7936

U1

HT7936

VOUT1

GND2

EN3

C-4VIN5C+6

CN2

LCM HEADER 17X2

CN2

LCM HEADER 17X2

VDD51

GND02

BL_EN3

I2C_SDA4

I2C_SCL5

WR/SCL6

MISO7

MOSI8

/CS9

PENIRQ10

NC011

/RESET12

GND113

VDD3314

PD015

PD116

PD217

PD318

PD419

PD520

PD621

PD722

PD823

PD924

PD1025

PD1126

PD1227

PD1328

PD1429

PD1530

PD1631

PD1732

/RD33

RS34

RN2

RP4K7

RN2

RP4K7

18

27

36

45

SW1

SW DIP-4

SW1

SW DIP-4

R10 75/5%/0603R10 75/5%/0603

R9 75/5%/0603R9 75/5%/0603

RN5

RP4K7

RN5

RP4K7

18

27

36

45

C1

1uF/0603

C1

1uF/0603

RN3

RP4K7

RN3

RP4K7

18

27

36

45

R54K7/0603R54K7/0603

R44K7/0603R44K7/0603

R2

4K

7/0

603

R2

4K

7/0

603

+

C410uF/CASE-A

+

C410uF/CASE-A

RN4

RP4K7

RN4

RP4K7

18

27

36

45

CN1

TFT3P4263 /40PIN

CN1

TFT3P4263 /40PIN

LE

DA

1

LE

DK

12

LE

DK

23

LE

DK

34

LE

DK

45

IM0

6

IM1

7

IM2

8

IM3

9

/RE

SE

T10

DB

17

11

DB

16

12

DB

15

13

DB

14

14

DB

13

15

DB

12

16

DB

11

17

DB

10

18

DB

919

DB

820

DB

721

DB

622

DB

523

DB

424

DB

325

DB

226

DB

127

DB

028

SD

O29

SD

I30

RD

31

WR

/SC

L32

RS

33

CS

34

FM

AR

K35

IOV

CC

36

VC

C37

VC

I38

GN

D39

NC

40

R64K7/0603R64K7/0603

Figure 6. 2.8 Inches TFT LCD Module (ESK32-A2A31) Schematic

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Schematics

Cop��ight© �01� �� HOLTEK SEMICONDUCTOR INC.

The info�mation appea�ing in this Data Sheet is �elieved to �e acc��ate at the time of p��lication. Howeve�� Holtek ass�mes no �esponsi�ilit� a�ising f�om the �se of the specifications desc�i�ed. The applications mentioned he�ein a�e �sed solel� fo� the p��pose of ill�st�ation and Holtek makes no wa��ant� o� �ep�esentation that s�ch applications will �e s�ita�le witho�t f��the� modification� no� �ecommends the �se of its p�od�cts fo� application that ma� p�esent a �isk to h�man life d�e to malf�nction o� othe�wise. Holtek's p�od�cts a�e not a�tho�ized fo� �se as c�itical components in life s�ppo�t devices o� s�stems. Holtek �ese�ves the �ight to alte� its p�od�cts witho�t p�io� notification. For the most up-to-date information, please visit our web site at http://www.holtek.com/en/.

esk32-a2a31 2.8 inch tft lcd module user manual e 4. lcd mod le + expansion boa d + sta te kit ........

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