Holtek ESK32-A3A31 User manual

ESK32-A3A31 33 SEG × 8 COM
Monochrome LCD User Manual
Revision: V1.00 Date: October 27, 2020

Rev. 1.00 2 October 27, 2020 Rev. 1.00 3 October 27, 2020
ESK32-A3A31 33 SEG × 8 COM
Monochrome LCD User Manual
ESK32-A3A31 33 SEG × 8 COM
Monochrome LCD User Manual
Table of Contents
1. Overview........................................................................................................... 3
1.1 ESK32-A3A31 Introduction ....................................................................................................3
1.2 ESK32-2x001A Introduction ...................................................................................................4
1.3 ESK32-30511 Introduction – using the HT32F57352 Starter Kit as an example ...................4
2. Hardware Description...................................................................................... 8
2.1 ESK32-A3A31 Expansion Board Connector – CN1...............................................................9
2.2 ESK32-A3A31 Expansion Board Connector – CN2...............................................................9
2.3 ESK32-A3A31 LCD 33 × 8 Connector – CN3......................................................................10
2.4 ESK32-A3A31 Segment Switch – SW1, SW2 ..................................................................... 11
2.5 ESK32-A3A31 LCD Map...................................................................................................... 11
3. Using the LCD Panel ..................................................................................... 16
3.1 Tool Preparation ...................................................................................................................16
3.2 LCD Panel Setting................................................................................................................16
3.3 Expansion Board Setting......................................................................................................16
3.4 Starter Kit Setting – using the HT32F57352 Starter Kit as an example ...............................17
3.5 Board Assembly ...................................................................................................................18
3.6 Obtain the Example Program...............................................................................................18
3.7 Compile and Execute the Program ......................................................................................18
4. Schematics..................................................................................................... 19
Disclaimer........................................................................................................... 20
Limitation of Liability...................................................................................................................20
Governing Law ...........................................................................................................................20
Update of Disclaimer..................................................................................................................20

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ESK32-A3A31 33 SEG × 8 COM
Monochrome LCD User Manual
ESK32-A3A31 33 SEG × 8 COM
Monochrome LCD User Manual
1. Overview
The ESK32-A3A31 includes a monochrome LCD panel designed for the HT32 series expansion
board, which can be used with HT32F573xx Starter Kit of HT32 LCD series to build a complete set
of development tools. This user manual will describe the features, hardware architecture and usage
of ESK32-A3A31 Mono-LCD.
In the user manual the Starter Kit takes the ESK32-30511 as an example. The HT32F57352 is used
as a target MCU for the ESK32-30511. Users can connect the ESK32-A3A31 monochrome LCD
panel to the ESK32-2x001A expansion board and use it with the ESK32-30511 Starter Kit. This will
help users speed up development and verify the application.
1.1 ESK32-A3A31 Introduction
ESK32-A3A31 provides LCD demo for applications requiring low-cost displays.
Specications:
• 33 SEG × 8 COM Mono-LCD Panel (without LCD driver)
• Display Type : FSTN / Reective
• Polarizer Mode : Transmissive
• Viewing Direction : 12 O’clock
• Operating Voltage : 3.3 V
• Drive Method : 1/8 Duty, 1/4 Bias
Figure 1. ESK32-A3A31

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1.2 ESK32-2x001A Introduction
The HT32 provides two expansion boards, ESK32-20001A and ESK32-21001A, also equipped with
rich peripheral accessories to easy for users to evaluate the functions and features of HT32 MCU.
Comparing ESK32-21001A with ESK32-20001A, the ESK32-21001A adds more CMOS sensor
connector, Smart Card seat and Audio input/output components.
Reference:
• Refer to ESK32-2x001A Expansion Board User Manual for more details.
Figure 2. ESK32-2x001A
1.3 ESK32-30511 Introduction – using the HT32F57352 Starter Kit as an example
The ESK32-30511 is composed of HT32F57352 Target Board and e-Link32 Lite Debug
Adaptor. The e-link32 Lite Debug Adaptor supports Serial Wire Debug. Users can download
and debug programs simply by connecting to the PC IDE via USB interface. The HT32F57352
Starter Kit Extension Connector pin allocations are shown in the Table 1 and Table 2. Refer to
HT32F57331_41_42_52_Datasheet for more pin information.
References:
• Refer to HT32 MCU Starter Kit User Manual for more details.
• Refer to e-Link32/e-Link32 Pro User’s Guide to understand how to use e-Link32 Lite Debug
Adaptor on Keil and IAR.

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Monochrome LCD User Manual
Figure 3. ESK32-30511 (Front)
Figure 4. ESK32-30511 (Back)

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Pin No. Description Pin No. Description
1 GND 2 GND
3 PD8#/ I2S_BCLK (see Table 9, Opt2-1) 4 PA9 / I2S_WS
5 PA4 / RS232_RX (connect to MCU TX) 6 PA5#/ RS232_TX (connect to MCU TX)
(see J2, DAP_TX)
7 PD6#/ M_IO4 (see Table 9, Opt1-2) 8 PA7 / BUZZER
9 PB13#/ M_IO2 (see R23, HSEi) 10 PB14#/ M_IO3 (see R24, HSEo)
11 PA3 / M_IO0 12 PD0#/ M_IO1 (see Table 9, Opt3-2)
13 PD4 / M_TX 14 PD5 / M_RX
15 PB11#/ M_RTS (see R22, LSEo) 16 PB10#/ M_CTS (see R21, LSEi)
17 PC9#/ M_MISO (see Table 9, Opt4-3) 18 PD7#/ M_CS (see Table 9, Opt3-1)
19 PC5#/ M_SCK (see Table 9, Opt4-1) 20 PC8#/ M_MOSI (see Table 9, Opt4-2)
21 PA1 / M_SDA 22 PA0 / M_SCL
23 PA1 / Touch_SDA 24 PA0 / Touch_SCL
25 PA1 / EE_SDA 26 PA0 / EE_SCL
27 PB12 / B0_WAKEUP
(connect to MCU Wakeup pin) 28 NC
29 PA2 / VR 30 GND
31 PB10#/ LSE_In (see R21, LSEi) 32 PB11#/ LSE_Out (see R22, LSEo)
33 PC9#/ SD_D0 / MISO (see Table 9, Opt4-3) 34 NC
35 NC 36 PD7#/ SD_D3 / CS (see Table 9, Opt3-1)
37 PC5#/ SD_CLK (see Table 9, Opt4-1) 38 PC8#/ SD_CMD / MOSI (see Table 9, Opt4-2)
39 PC9#/ S14 (see Table 9, Opt4-3) 40 NC
41 PC8#/ S15 (see Table 9, Opt4-2) 42 PC5#/ S16 (see Table 9, Opt4-1)
43 PD0#/ S17 (see Table 9, Opt3-2) 44 PD7#/ S18 (see Table 9, Opt3-1)
45 PA11#/ S19 (see Table 9, Opt2-4) 46 PD10#/ S20 (see Table 9, Opt2-3)
47 PD9#/ S21 (see Table 9, Opt2-2) 48 PD8#/ S22 (see Table 9, Opt2-1)
49 PD6#/ S23 (see Table 9, Opt1-2) 50 PC4#/ S24 (see Table 9, Opt1-1)
51 PE0 / S25 52 PE1 / S26
53 PE2 / S27 54 PE3 / S28
55 PC6#/ USBD- (see R26, USB_N) 56 PC7#/ USBD+ (see R27, USB_P)
57 GND 58 GND
59 3.3V 60 3.3V
# : mean the specic Options or Jumper settings.
Table 1. Pin Assignment for Extension Connector CN4-1 (ESK32-30511)

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Monochrome LCD User Manual
Pin No. Description Pin No. Description
61 3.3V 62 3.3V
63 GND 64 GND
65 PA1 / I2S_SDA 66 PA0 / I2S_SCL
67 PD9#/ I2S_SDO (see Table 9, Opt2-2) 68 PD10#/ I2S_SDI (see Table 9, Opt2-3)
69 PA9 / BOOT1
(connect to MCU BOOT pin) (see R18) 70 PA11#/ I2S_MCLK (see Table 9, Opt2-4)
71 NC 72 F_NRST / nRST
73 PA12 / SWCLK 74 PA13 / SWDIO
75 PB15 / C0 76 PC0 / C1
77 PC10 / C2 78 PC11 / C3
79 PC12 / C4 80 PD13
81 PC0 82 PD12
83 PC13 / C5 84 PA8 / C6
85 PA10 / C7 86 PA14 / S0
87 PA15 / S1 88 PB0 / S2
89 PB1 / S3 90 PD1 / S4
91 PD2 / S5 92 PD3 / S6
93 PD11 / S7 94 PD12 / S8
95 PD13 / S9 96 PD14 / S10
97 PD15 / S11 98 PB2 / S12
99 PB3 / S13 100 PB4 / S32
101 PB5 / S31 102 PC14 / S30
103 PC15 / S29 104 GND
105 PC5#/ Flash_SCK (see Table 9, Opt4-1) 106 PC8#/ Flash_MOSI (see Table 9, Opt4-2)
107 PC9#/ Flash_MISO (see Table 9, Opt4-3) 108 PA6 / Flash_CS
109 PA9 / Button1 110 PC1 / Button2
111 PC2 / LED0 112 PC3 / LED1
113 PB7 / LED2 114 PC4#/ SCI_CMD (Table 9, see Opt1-1)
115 PC3 / SCI_RST 116 PB6 / SCI_CLK
117 PB7 / SCI_DET 118 PB8 / SCI_DIO
119 GND 120 GND
121 5V 122 5V
# : mean the specic Options or Jumper settings.
Table 2. Pin Assignment for Extension Connector CN4-2 (ESK32-30511)

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Monochrome LCD User Manual
2. Hardware Description
The ESK32-A3A31 is a 33 SEG ×8 COM monochrome LCD panel for the HT32 series expansion
board. The front view of ESK32-A3A31 Layout is shown in the Figure 5. The back view of ESK32-
A3A31 Layout is shown in the Figure 6.
Expansion Board
Connector (CN1)
Expansion Board
Connector (CN2)
33 SEG x 8 COM
LCD Panel
LCD 33 x 8
Connector (CN3)
LCD 33 x 8
Connector (CN3)
Figure 5. ESK32-A3A31 Hardware Layout (Front)
Expansion Board
Connector (CN1)
Expansion Board
Connector (CN2)
Unused Segment
Switch (SW1, SW2)
Figure 6. ESK32-A3A31 Hardware Layout (Back)

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2.1 ESK32-A3A31 Expansion Board Connector – CN1
Figure 7. Expansion Board Connector CN1 (ESK32-A3A31)
Pin No. Description Pin No. Description
1 NC 2 NC
3 C0 4 C2
5 C3 6 C1
7 NC 8 NC
9 C4 10 C5
11 NC 12 C6
13 NC 14 NC
15 C7 16 S0
17 S1 18 S2
19 S3 20 S4
21 S5 22 S6
23 S7 24 S8
25 S9 26 S10
27 S11 28 S12
29 S13 30 S32
31 NC 32 S29
33 S31 34 S30
Table 3. Pin Assignment for Expansion Board Connector CN1 (ESK32-A3A31)
2.2 ESK32-A3A31 Expansion Board Connector – CN2
Figure 8. Expansion Board Connector CN2 (ESK32-A3A31)
Pin No. Description Pin No. Description
1 S14 2 S16
3 S18 4 S20
5 S22 6 S24
7 S26 8 S28
9 S27 10 S25
11 S23 12 S21
13 S19 14 S17
15 NC 16 S15
Table 4. Pin Assignment for Expansion Board Connector CN2 (ESK32-A3A31)

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Monochrome LCD User Manual
2.3 ESK32-A3A31 LCD 33 × 8 Connector – CN3
Figure 9. LCD 33 × 8 Connector CN3 (ESK32-A3A31)
Pin No. Description Pin No. Description
1 S13#/ SEG33 (see SW2.11) 2 S15#/ SEG32 (see SW2.12)
3 S17#/ SEG31 (see SW2.13) 4 S19#/ SEG30 (see SW2.14)
5 S21#/ SEG29 (see SW2.15) 6 S23#/ SEG28 (see SW2.16)
7 S25#/ SEG27 (see SW2.17) 8 S27#/ SEG26 (see SW2.18)
9 S29#/ SEG25 (see SW2.19) 10 S31#/ SEG24 (see SW2.20)
11 S32#/ SEG23 (see SW1.11) 12 S30#/ SEG22 (see SW1.12)
13 S28#/ SEG21 (see SW1.13) 14 S26#/ SEG20 (see SW1.14)
15 S24#/ SEG19 (see SW1.15) 16 S22#/ SEG18 (see SW1.16)
17 S20#/ SEG17 (see SW1.17) 18 S18#/ SEG16 (see SW1.18)
19 S16#/ SEG15 (see SW1.19) 20 S14#/ SEG14 (see SW1.20)
21 S12 / SEG13 22 S11 / SEG12
23 S10 / SEG11 24 S9 / SEG10
25 S8 / SEG9 26 S7 / SEG8
27 S6 / SEG7 28 C7 / COM8
29 C6 / COM7 30 C5 / COM6
31 C4 / COM5 32 C3 / COM4
33 C2 / COM3 34 C1 / COM2
35 C0 / COM1 36 S5 / SEG6
37 S4 / SEG5 38 S3 / SEG4
39 S2 / SEG3 40 S1 / SEG2
41 S0 / SEG1
# : mean the specic Switch settings.
Table 5. Pin Assignment for LCD 8 × 33 Connector CN3 (ESK32-A3A31)