HT32F1656 Starter Kit User Manual Revision: V1.00 Date: ������������� July 17, 2015 HT32F1656 Starter Kit User Manual Table of Contents 1 Introduction.............................................................................................................. 5 Features.................................................................................................................................. 6 2 Hardware Layout...................................................................................................... 7 VBAT Option – JP9.................................................................................................................... 9 LED Option – JP2, JP11....................................................................................................... 10 High Speed External Crystal Oscillator (HSE) Option – JP1, JP5........................................ 11 Low Speed External Crystal Oscillator (LSE) Option – JP3, JP4......................................... 11 SWD-10P Connector – JP26................................................................................................ 12 Adjustment SWD-10P Connector (for e-Link32 Lite) – JP27................................................ 13 Extension connector 1 – J31................................................................................................ 14 Extension connector 2 – J32................................................................................................ 15 Mini USB type B Connector – U3......................................................................................... 16 3 Schematics............................................................................................................. 17 Rev. 1.00 2 of 21 July 17, 2015 Table of Contents Boot Option............................................................................................................................. 9 HT32F1656 Starter Kit User Manual List of Figures Rev. 1.00 3 of 21 July 17, 2015 List of Figures Figure 1. HT32F1656 Starter Kit................................................................................................................. 5 Figure 2. HT32F1656 Starter Kit Block Diagram........................................................................................ 7 Figure 3. HT32F1656 Starter Kit Layout..................................................................................................... 8 Figure 4. SWD-10P Connector................................................................................................................. 12 Figure 5. Adjustment SWD-10P Connector.............................................................................................. 13 Figure 6. Extension Connector 1.............................................................................................................. 14 Figure 7. Extension Connector 2.............................................................................................................. 15 Figure 8. Mini USB type B Connector....................................................................................................... 16 Figure 9. MCU, Boot Pins and Extension Connector................................................................................ 18 Figure 10. SWD Connector, LED Display and the Power......................................................................... 19 Figure 11. e-Link32 Lite............................................................................................................................ 20 HT32F1656 Starter Kit User Manual List of Tables Rev. 1.00 4 of 21 July 17, 2015 List of Tables Table 1. Boot Jumpers................................................................................................................................ 9 Table 2. VBAT Jumpers................................................................................................................................. 9 Table 3. LED1 Jumpers............................................................................................................................ 10 Table 4. LED2 Jumpers............................................................................................................................ 10 Table 5. HSE Jumpers...............................................................................................................................11 Table 6. LSE Jumpers................................................................................................................................11 Table 7. SWD-10P Connector................................................................................................................... 12 Table 8. Adjustment SWD-10P Connector................................................................................................ 13 Table 9. Extension Connector 1................................................................................................................ 14 Table 10. Extension Connector 2.............................................................................................................. 15 Table 11. Mini USB type B Connector....................................................................................................... 16 HT32F1656 Starter Kit User Manual 1 Introduction The HT32F1656 Starter Kit is based around the 32-bit ARM CortexTM-M3 high performance microcontroller and is designed to assist users to get up and running with this device as quickly as possible. It provides a complete solution from evaluation, programming to production. This development platform is composed of a Target Board and Serial-Wire Debugger (e-Link32 Lite) and as such requires no external debugging equipment. It can use the Target Board external power supply or be powered by the Debugger. The Starter Kit provides a standard C language program development environment for Keil μVision and IAR EWARM. With this basis, Holtek also provides a complete function library to avoid complicated lower level function development in order to allow development designers to focus on the needs of their application development. Using a simple USB cable connection, users only have to connect their PC to the integrated hardware debug interface (Serial-Wire Debugger), to automatically download the programs and immediately commence debug operations. Figure 1. HT32F1656 Starter Kit Rev. 1.00 5 of 21 July 17, 2015 Introduction The Starter Kit is based on the Cortex™-M3 high speed microcontroller, the operating frequency is up to 72MHz. It provides 256 KB of embedded Flash memory, 32 KB of embedded SRAM memory, multiple Timers, dual I2C interfaces, dual SPI interfaces, dual USART interfaces, dual UART interfaces, I2S, EBI, CRC-16/32, 12-bit A/D converter, 80 programmable general purpose I/ O pins and a USB function which can be used to interface to a wide range of external devices. HT32F1656 Starter Kit User Manual Features ▀ Comprises Target Board and Serial-Wire Debugger ▀ Can be used for the testing and development of many external devices ▀ Can use the Target Board external power supply or be powered by the Debugger Rev. 1.00 6 of 21 July 17, 2015 Introduction ▀ Using HT32F1656 high performance microcontroller ● Up to 72 MHz operating frequency ● 256 KB Flash, 32 KB SRAM ● Integrated multiple Timers, dual I2C functions, dual SPI functions, dual USART functions, dual UART functions, single 12-bit A/D converter, USB and I2S function ● LQFP100 package ● 8 MHz external crystal clock ● 80 programmable general purpose I/O pins HT32F1656 Starter Kit User Manual 2 Hardware Layout MiniUSB �V-to-3.3V Reg��ator USB LED Err Hardware Layout 1� MHz HT4�B0K e-Link3� Microcontro��er B�s� Adj�stment SWD-10P SWD-10P LED1 LED� 3�.�68 kHz I/O Extension-�4P I/O Extension-�4P HT32F1656 ARM Cortex-M3 Microcontro��er 8 MHz RE SET �V-to-3.3V Reg��ator MiniUSB Figure 2. HT32F1656 Starter Kit Block Diagram Rev. 1.00 7 of 21 July 17, 2015 HT32F1656 Starter Kit User Manual Mini USB HT3�F1��3 HT4�B0K SWD-10P HT3�F16�6 Extension 1 Extension � Reset Mini USB Figure 3. HT32F1656 Starter Kit Layout Rev. 1.00 8 of 21 July 17, 2015 Hardware Layout Adj�stment SWD-10P HT32F1656 Starter Kit User Manual Boot Option Table 1. Boot Jumpers Jumper Description Boot loader mode A9 A8 0 Hardware Layout 1 Boot from the embedded boot loader. SRAM mode A9 A8 & A9 A8 0 1 Boot from the embedded SRAM. Main flash mode – default setting A9 A8 0 1 Boot from the embedded main flash. BOOT0 (A8) don’t care and BOOT1 (A9) = 1 VBAT Option – JP9 Table 2. VBAT Jumpers Jumper Description VBAT pin is connected to 3.3V power - default setting EXT VBAT VDD33 VBAT VBAT pin is connected to 3V CR1220 battery. EXT VBAT VDD33 Rev. 1.00 9 of 21 July 17, 2015 HT32F1656 Starter Kit User Manual LED Option – JP2, JP11 Table 3. LED1 Jumpers Jumper Description LED1 connected with the extension I/O header and I/O port C pin 9 (C9) – default setting I/O C9 LED1 Hardware Layout C9 C9 can only connect to extension I/O header. I/O C9 LED1 Table 4. LED2 Jumpers Jumper Description LED2 connected with the extension I/O header and I/O port C pin 11 (C11) – default setting I/O C11 LED2 C11 C11 can only connect to extension I/O header. I/O C11 LED2 Rev. 1.00 10 of 21 July 17, 2015 HT32F1656 Starter Kit User Manual High Speed External Crystal Oscillator (HSE) Option – JP1, JP5 Table 5. HSE Jumpers Jumper Description HSE mode – default setting B14 B15 I/O I/O Hardware Layout OSCOUT OSCIN B14 & B15 I/O mode of I/O port B pin 14 (B14) and I/O port B pin 15 (B15). B14 B15 I/O OSCIN I/O OSCOUT Low Speed External Crystal Oscillator (LSE) Option – JP3, JP4 Table 6. LSE Jumpers Jumper Description LSE mode – default setting C13 C14 I/O I/O OSC32OUT OSC32IN C13 & C14 I/O mode of I/O port C pin 13 (C13) and I/O port C pin 14 (C14). C13 C14 I/O OSC32IN Rev. 1.00 I/O OSC32OUT 11 of 21 July 17, 2015 HT32F1656 Starter Kit User Manual SWD-10P Connector – JP26 � 4 6 8 10 Hardware Layout 1 3 � � 9 Figure 4. SWD-10P Connector Table 7. SWD-10P Connector Rev. 1.00 Pin# Description Pin# Description 1 3.3V 2 SWDIO (PA13) 3 GND 4 SWCLK (PA12) 5 GND 6 TRACESWO (PA11) 7 5V 8 NC 9 GND 10 Reset# 12 of 21 July 17, 2015 HT32F1656 Starter Kit User Manual Adjustment SWD-10P Connector (for e-Link32 Lite) – JP27 1 3 � � 9 Hardware Layout � 4 6 8 10 Figure 5. Adjustment SWD-10P Connector Table 8. Adjustment SWD-10P Connector Rev. 1.00 Pin# Description Pin# Description 1 3.3V 2 SWDIO (PA13) 3 GND 4 SWCLK (PA12) 5 GND 6 TRACESWO (PA11) 7 5V 8 NC 9 GND 10 Reset# 13 of 21 July 17, 2015 HT32F1656 Starter Kit User Manual Extension connector 1 – J31 � 4 6 8 10 1� 14 16 18 �0 �� �4 �6 �8 30 3� 34 36 38 40 4� 44 46 48 �0 �� �4 1 3 � � 9 11 13 1� 1� 19 �1 �3 �� �� �9 31 33 3� 3� 39 41 43 4� 4� 49 �1 �3 Hardware Layout Figure 6. Extension Connector 1 Table 9. Extension Connector 1 Rev. 1.00 Pin# Description Pin# Description 1 A0 2 A1 3 A2 4 A3 5 A4 6 A5 7 A6 8 A7 9 E8 10 E9 11 E10 12 E11 13 E12 14 C9 (LED1 Option) 15 C10 16 C11 (LED2 Option) 17 C12 18 D6 19 B12 20 B13 21 C13 (LSE Option) 22 C14 (LSE Option) 23 C15 24 D0 25 E13 26 E14 27 E15 28 B14 (HSE Option) 29 B15 (HSE Option) 30 D1 31 D2 32 D3 33 D4 34 D5 35 C0 36 C1 37 C2 38 C3 39 D7 40 D8 41 Reset# 42 VBAT (VBAT Option) 43 3.3V 44 3.3V 45 3.3V 46 3.3V 47 GND 48 GND 49 GND 50 GND 51 NC 52 NC 53 NC 54 NC 14 of 21 July 17, 2015 HT32F1656 Starter Kit User Manual Extension connector 2 – J32 � 4 6 8 10 1� 14 16 18 �0 �� �4 �6 �8 30 3� 34 36 38 40 4� 44 46 48 �0 �� �4 1 3 � � 9 11 13 1� 1� 19 �1 �3 �� �� �9 31 33 3� 3� 39 41 43 4� 4� 49 �1 �3 Hardware Layout Figure 7. Extension Connector 2 Table 10. Extension Connector 2 Rev. 1.00 Pin# Description Pin# Description B11 1 B10 2 3 B8 4 B9 5 B6 6 B7 7 E6 8 E7 9 E4 10 E5 11 E2 12 E3 13 C8 14 E1 15 B5 16 C7 B4 17 B3 18 19 E0 20 B2 21 D14 22 D15 23 D12 24 D13 25 D10 26 D11 27 C6 28 D9 29 C4 30 C5 31 B0 32 B1 33 A14 34 A15 35 A12 (SWCLK) 36 A13 (SWDIO) 37 A10 38 A11 (TRACESWO) 39 A8 (Boot Option) 40 A9 (Boot Option) 41 3.3V 42 3.3V 43 3.3V 44 3.3V 45 GND 46 GND 47 GND 48 GND 49 GND 50 GND 51 5V 52 5V 53 5V 54 5V 15 of 21 July 17, 2015 HT32F1656 Starter Kit User Manual Mini USB type B Connector – U3 1 � 3 4 � Hardware Layout Figure 8. Mini USB type B Connector Table 11. Mini USB type B Connector Rev. 1.00 Pin# Description Pin# 1 USB_5V 2 D- 3 D+ 4 NC 5 GND 16 of 21 Description July 17, 2015 HT32F1656 Starter Kit User Manual 3 Schematics This section shows the complete circuit of the HT32F1656 Starter kit: ▀ Figure 9. Includes the MCU, Boot Pins and Extension Connector. ▀ Figure 10. Includes SWD Connector, LED Display and the Power. Rev. 1.00 17 of 21 Schematics ▀ Figure 11. Includes the e-Link32 Lite. July 17, 2015 VDD3V3 C11 2.2uF F_PA1 F_PA3 F_PA5 F_PA7 F_PE9 F_PE11 F_PC9_T F_PC11_T F_PD6 F_PB13 F_PC14 F_PD0 F_PE14 F_PB14 F_PD1 F_PD3 F_PD5 F_PC1 F_PC3 F_PD8 VBAT VDD3V3 VDD3V3 GND GND VIN VIN L2 Bead 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 F_PA0 F_PA1 F_PA2 F_PA3 F_PA4 F_PA5 F_PA6 F_PA7 F_PE8 F_PE9 F_PE10 F_PE11 F_PE12 VDD3V3 GND F_PC9_T F_PC10 F_PC11_T F_PC12 F_PD6 F_PB12 Header 27x2 USBDM USBDP 0.1uF 0.1uF C36 0.1uF C40 0.1uF 0.1uF LED1 Header 3 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 F_PC11_T F_PC11_T 3 2 1 U8 HT32F1656_1655 PE0 PD15 PD14 PD13 PD12 F_PC6 PD11 F_PC5 PD10 F_PC4 PD9 F_PB1 PC6 F_PB0 PC5 GND PC4 VDD3V3 PB1 F_PA15 PB0 F_PA14 VSS33_3 F_PA13 VDD33_3 F_PA12 PA15 F_PA11 PA14 F_PA10 SWDIO/PA13 F_PA9 SWCLK/PA12 F_PA8 TRACESWO/PA11 F_PC3 PA10 PA9_BOOT1 PA8_BOOT0 PD8 PD7 LED2 Header 3 F_PB10 F_PB8 F_PB6 F_PE6 F_PE4 F_PE2 F_PC8 F_PB5 F_PB3 F_PE0 F_PD14 F_PD12 F_PD10 F_PC6 F_PC4 F_PB0 F_PA14 F_PA12 F_PA10 F_PA8 VDD3V3 VDD3V3 GND GND GND VDD5V VDD5V F_PE0 F_PD15 F_PD14 F_PD13 F_PD12 F_PD11 F_PD10 F_PD9 F_PC6 F_PC5 F_PC4 F_PB1 F_PB0 GND VDD3V3 F_PA15 F_PA14 F_PA13 F_PA12 F_PA11 F_PA10 F_PA9 F_PA8 F_PD8 F_PD7 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49 51 53 J32 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49 51 53 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 Header 27x2 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 F_PB11 F_PB9 F_PB7 F_PE7 F_PE5 F_PE3 F_PE1 F_PC7 F_PB4 F_PB2 F_PD15 F_PD13 F_PD11 F_PD9 F_PC5 F_PB1 F_PA15 F_PA13 F_PA11 F_PA9 VDD3V3 VDD3V3 GND GND GND VDD5V VDD5V Header 3 JP6 VDD5V Header 3 JP7 C28 0.01uF JP9 Header 3 JP3 Header 3 Figure 9. MCU, Boot Pins and Extension Connector JP4 Header 3 JP1 Header 3 3 2 1 JP5 Header 3 1M Y2 1 8MHz C5 10pF OSCOUT OSCIN F_PB15 OSCOUT OSCOUT F_PB14 OSCIN OSCIN 3 2 1 3 2 1 3 2 1 3 2 1 SW-PB R2 F_PA9 F_PA8 1 2 3 4 R1A R2A R3A R4A R1B R2B R3B R4B 1 2 3 8 7 6 5 R8P4R_1.5K 2 Title C4 10pF Size Number A4 Date: File: 2014/10/17 Sheet of D:\HW\ \HT32F1656 StarterKit MCU SchDoc Drawn By: Revision VDD3V3 R31 GND 1 2 3 SWDIO SWCLK SWO GND VDD3V3 VDD3V3 F_PA13 F_PA12 F_PA11 VDD3V3 GND F_PD1 F_PD2 F_PD3 F_PD4 F_PD5 F_PC0 F_PC1 F_PC2 F_PC3 F_PC15 F_PD0 F_PE13 F_PE14 F_PE15 F_PC14 OSC32OUT OSC32OUT F_PC13 OSC32IN OSC32IN 100K C7 0.1uF VBAT VDD3V3 VDD3V3 R8 B1 C6 7pF F_PC9_T F_PC9_T 3 2 1 C37 JP11 C10 2.2uF VDD3V3 10M Y3 1 2 32768 C12 7pF C35 nRESET OSC32OUT OSC32IN R7 C38 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 F_PD2 F_PD1 F_PD0 F_PB13 PA0 PA1 PA2 PA3 PA4 PA5 PA6 PA7 PE8 PE9 PE10 PE11 PE12 VDD33_1 VSS33_1 PC9 PC10 PC11 PC12 PD6 PB12 USBDM USBDP PB13 NC VDD3V3 GND F_NRST 5VT_IO_3 5VT_IO_2 5VT_IO_1 C9 0.1uF F_PB11 F_PB10 F_PB9 F_PB8 F_PB7 F_PB6 F_PE7 F_PE6 F_PE5 F_PE4 GND VDD3V3 F_PE3 F_PE2 F_PE1 F_PC8 F_PC7 F_PB5 F_PB4 F_PB3 F_PB2 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 JP2 VDD3V3 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49 51 53 Bead VSSA VREFVREF+ VDDA PB11 PB10 PB9 PB8 PB7 PB6 PE7 PE6 PE5 PE4 VSS33_4 VDD33_4 PE3 PE2 PE1 PC8 PC7 PB5 PB4 PB3 PB2 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49 51 53 L1 VLDOOUT VLDOIN VSSLDO nRST VBAT XTAL32KIN/PC13 XTAL32KOUT/PC14 RTCOUT/PC15 PD0 PE13 PE14 PE15 XTALIN/PB14 XTALOUT/PB15 VDD33_2 VSS33_2 PD1 PD2 PD3 PD4 PD5 PC0 PC1 PC2 PC3 VIN F_PA0 F_PA2 F_PA4 F_PA6 F_PE8 F_PE10 F_PE12 F_PC10 F_PC12 F_PB12 F_PC13 F_PC15 F_PE13 F_PE15 F_PB15 F_PD2 F_PD4 F_PC0 F_PC2 F_PD7 F_NRST VDD3V3 VDD3V3 GND GND VIN VIN J31 9 7 5 3 1 VDD3V3 JP27 10 8 6 4 2 GND nRESET N.C. N.C. GND SWO GND SWCLK VDD SWDIO 10 8 6 4 2 SWD-10P JP26 nRESET N.C. SWO SWCLK SWDIO GND N.C. GND GND VDD 9 7 5 3 1 VDD3V3 SWD-10P U_e-link32 e-link32.SchDoc VDD5V VDD3V3 VDD5V U4 HT7833 SWDIO SWCLK SWO nRESET VDD5V VDD3V3 GND 1 2 3 4 VDD5V SWDIO SWCLK SWO nRESET SWDIO SWCLK SWO nRESET D12 6 7 8 9 C18 0.1uF 1 2 3 4 U11 LM1117 D10 5V_t VIN R11 1M U3 GND VDD GND USBDGND USBD+ GND VSS SHELL USB_CONNECTOR C42 10uF 5V_t 8 7 6 5 Option R1B R2B R3B R4B R1A R2A R3A R4A R8P4R_1K 1 2 3 4 R4 C14 10UF 33 R13 33 C32 47p C34 10UF C1 47p VDD3V3 LED1 LED2 5VT_IO_1 5VT_IO_3 5VT_IO_2 VDD3V3 USBDM USBDP VDD5V SS-12W,SS-13W,SS-14W C13 10uF 1 2 3 4 5 D9 SS-12W,SS-13W,SS-14W SS-12W,SS-13W,SS-14W e-link32 R1 VDD5V 1 2 3 4 R37 R1A R2A R3A R4A R1B R2B R3B R4B 8 7 6 5 D6 LED1 D4 LED2 D2 Power R8P4R_330 VIN GND J4 1 2 3 4 5 6 HEADER 6 Title Size Date: Fil Figure 10. SWD Connector, LED Display and the Power Number Revision A4 2014/10/17 D \HW\ \HT32F165 Sheet of St t Kit P i h Dl S hDB R9 VDD3V3 100k A1 A2 DIR1 VDD3V3 R32 1 R1A PB12 2 R2A GND 3 R3A PA11/I2C_SCL 4 R4A R1B R2B R3B R4B R8P4R_10K 0.1uF C22 C16 0.01uF 8 9 10 VDD3V3 GND PA14/SWCLK PA13/SWDIO NRST JP8 1 2 3 4 5 Header 5 Figure 11. e-Link32 Lite R12 33 R5 33 R10 1M U9 SN74AVC2T245 B1 B2 GND 5 4 3 C31 47p C2 47p 1 2 3 4 PA6/SPI_SCK SWDIO SWCLK GND VDD3V3 R34 R1A R2A R3A R4A R1B R2B R3B R4B 3 C17 0.1uF 0.1uF 7 6 PB14 PB13 PB2 C26 0.1uF PA14/SWCLK PA13/SWDIO VDD3V3 HT1253_LQFP48 1 2 3 4 5 8 7 6 5 C C41 R6 470 PB1/OSCO PB0/OSCI PB15 PB14 PB13 PB12 GND VDD GNDUSBDGNDUSBD+ GND VSS SHELL USB_CONNECTOR VDD3V3 VDD3V3 36 35 34 33 32 31 30 29 28 27 26 25 U5 R8P4R_1.5K E 1 2 3 PB15 VSSA_1 VDDA VSS33_1 VDD33_1 PB7 PB6 PB5 PB4 PB3 PB2 N.C. VDD18 VLDOOUT N.C. VLDOIN VSSLDO nRST VBAT PB8/OSC32I PB9/OSC32O PB10 PB11 PA11 PA12 PB1/OSCO PB0/OSCI PB15 PB14 PB13 PB12 VSS33_3 VSS33_2 VDD33_2 PA15 PA14 PA13 VDD3V3 2.2uF C27 Y1 CRYSTAL C39 0.1uF VDD5V D5 SS-12W,SS-13W,SS-14W 6 7 8 9 U1 13 14 15 16 17 NRST 18 VDD3V3 19 20 21 22 PA11/I2C_SCL 23 JTDO 24 VSSA_2 PA0 PA1 PA2 PA3 PA4 PA5 PA6 PA7 PA8 PA9 PA10 C8 10uF VCCA VCCB PB2 C21 0.1uF 48 47 46 45 44 43 42 41 40 39 38 37 PB7 PB6 PB5 C23 0.1uF PB0/OSCI PB1/OSCO PA8/UR_RX VDD3V3 B R3 1M VDD3V3 1 2 3 PA2 4 5 PA3 6 PA5/SPI_MISO7 PA6/SPI_SCK 8 PA7/SPI_SEL 9 PA8/UR_RX 10 PA9/UR_TX 11 12 C3 10uF 16 15 14 13 12 11 10 9 SDO NC V33O UDP UDN VDD VDD VSS U6 MMBT3906_SOT23 2 Busy SDI NC SCK SCS CLKI INT VSS NC HT45B0K SS-12W,SS-13W,SS-14W 8 7 6 5 VDD5V VDD3V3 GND F_NRST GND VDD3V3 3 D8 VDD5V C Err E D3 VDD3V3 D7 U10 1 VDD3V3 R8P4R_330 B USB 1 2 PA7/SPI_SEL 3 PA5/SPI_MISO4 PA3 5 6 PA2 7 8 U7 MMBT3904_SOT23 8 7 6 5 F_NRST R33 R1B R2B R3B R4B R1A R2A R3A R4A 1 2 3 4 PB2 VDD5V VDD3V3 GND nRESET SWDIO SWDIO SWCLK SWCLK JTDO SWO R8P4R_10K 2 D11 PA9/UR_TX U2 HT7833 1 Power DIR2 OE R1B R2B R3B R4B D1 1 2 R1A R2A R3A R4A 8 7 6 5 PB12 GND R36 1 2 3 4 1 2 3 4 Title Size Number Revision A4 Date: File: 2014/10/17 D:\HW\ \e-link32 SchDoc Sheet of Drawn By: Schematics VDD3V3 PB7 PB6 PB5 HT32F1656 Starter Kit User Manual Copyright© 2015 by HOLTEK SEMICONDUCTOR INC. The information appearing in this Data Sheet is believed to be accurate at the time of publication. However, Holtek assumes no responsibility arising from the use of the specifications described. The applications mentioned herein are used solely for the purpose of illustration and Holtek makes no warranty or representation that such applications will be suitable without further modification, nor recommends the use of its products for application that may present a risk to human life due to malfunction or otherwise. Holtek's products are not authorized for use as critical components in life support devices or systems. Holtek reserves the right to alter its products without prior notification. For the most up-to-date information, please visit our web site at http://www.holtek.com.tw. Rev. 1.00 21 of 21 July 17, 2015