HT32F1654 Starter Kit User Manual Revision: V1.00 Date: ������������� July 20, 2015 HT32F1654 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 USB Option – JP12, JP10.................................................................................................... 11 SWD-10P Connector – JP27................................................................................................ 12 Adjustment SWD-10P Connector (for e-Link32 Lite) – JP26................................................ 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 20, 2015 Table of Contents Boot Option............................................................................................................................. 9 HT32F1654 Starter Kit User Manual List of Figures Rev. 1.00 3 of 21 July 20, 2015 List of Figures Figure 1. HT32F1654 Starter Kit................................................................................................................. 5 Figure 2. HT32F1654 Starter Kit Block Diagram........................................................................................ 7 Figure 3. HT32F1654 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 HT32F1654 Starter Kit User Manual List of Tables Rev. 1.00 4 of 21 July 20, 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. USB Jumpers...............................................................................................................................11 Table 8. SWD-10P Connector................................................................................................................... 12 Table 9. Adjustment SWD-10P Connector................................................................................................ 13 Table 10. Extension Connector 1.............................................................................................................. 14 Table 11. Extension Connector 2.............................................................................................................. 15 Table 12. Mini USB type B Connector...................................................................................................... 16 HT32F1654 Starter Kit User Manual 1 Introduction The HT32F1654 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. HT32F1654 Starter Kit Rev. 1.00 5 of 21 July 20, 2015 Introduction The Starter Kit is based on the Cortex™-M3 high speed microcontroller, the operating frequency is up to 72MHz. It provides 64 KB of embedded Flash memory, 16 KB of embedded SRAM memory, multiple Timers, dual I 2C interfaces, dual SPI interfaces, dual USART interfaces, dual UART interfaces, I2S, EBI, CRC-16/32, 12-bit A/D converter, 51 programmable general purpose I/O pins and a USB function which can be used to interface to a wide range of external devices. HT32F1654 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 20, 2015 Introduction ▀ Using HT32F1654 high performance microcontroller ● Up to 72 MHz operating frequency ● 64 KB Flash, 16 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 ● LQFP64 package ● 8 MHz external crystal clock ● 51 programmable general purpose I/O pins HT32F1654 Starter Kit User Manual 2 Hardware Layout MiniUSB �V-to-3.3V Reg��ator USB LED Err B�s� Hardware Layout 12 MHz HT45B0K e-Link3� Microcontro��er Adj�stment SWD-10P SWD-10P LED1 LED� 3�.768 kHz I/O Extension-�4P I/O Extension-�4P HT32F1654 ARM Cortex-M3 Microcontro��er 8 MHz RE SET �V-to-3.3V Reg��ator MiniUSB Figure 2. HT32F1654 Starter Kit Block Diagram Rev. 1.00 7 of 21 July 20, 2015 HT32F1654 Starter Kit User Manual Mini USB HT3�F1��3 HT4�B0K SWD-10P HT3�F16�4 Extension 1 Extension � Reset Mini USB Figure 3. HT32F1654 Starter Kit Layout Rev. 1.00 8 of 21 July 20, 2015 Hardware Layout Adj�stment SWD-10P HT32F1654 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 20, 2015 HT32F1654 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 20, 2015 HT32F1654 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 I/O OSCOUT OSCIN Low Speed External Crystal Oscillator (LSE) Option – JP3, JP4 Table 6. LSE Jumpers Jumper Description LSE mode – default setting C14 C13 I/O I/O OSC32IN OSC32OUT C13 & C14 I/O mode of I/O port C pin 13 (C13) and I/O port C pin 14 (C14). C14 C13 I/O I/O OSC32IN OSC32OUT USB Option – JP12, JP10 Table 7. USB Jumpers Jumper Description USB mode – default setting B13 B12 I/O I/O USBDM USBDP B12 & B13 I/O mode of I/O port B pin 12 (B12) and I/O port B pin 13 (B13). B13 B12 I/O USBDP Rev. 1.00 I/O USBDM 11 of 21 July 20, 2015 HT32F1654 Starter Kit User Manual SWD-10P Connector – JP27 � 4 6 8 10 Hardware Layout 1 3 � 7 9 Figure 4. SWD-10P Connector Table 8. 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 20, 2015 HT32F1654 Starter Kit User Manual Adjustment SWD-10P Connector (for e-Link32 Lite) – JP26 1 3 � 7 9 Hardware Layout � 4 6 8 10 Figure 5. Adjustment SWD-10P Connector Table 9. 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 20, 2015 HT32F1654 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 � 7 9 11 13 1� 17 19 �1 �3 �� �7 �9 31 33 3� 37 39 41 43 4� 47 49 �1 �3 Figure 6. Extension Connector 1 Table 10. 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 NC 10 NC 11 NC 12 NC 13 NC 14 C9 (LED1 Option) 15 C10 16 C11 (LED2 Option) 17 C12 18 NC 19 B12 (USB Option) 20 B13 (USB Option) 21 C13 (LSE Option) 22 C14 (LSE Option) 23 C15 24 D0 25 NC 26 NC 27 NC 28 B14 (HSE Option) 29 B15 (HSE Option) 30 D1 31 D2 32 NC 33 NC 34 NC 35 C0 36 C1 37 C2 38 C3 39 NC 40 NC 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 20, 2015 Hardware Layout � HT32F1654 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 � 7 9 11 13 1� 17 19 �1 �3 �� �7 �9 31 33 3� 37 39 41 43 4� 47 49 �1 �3 Figure 7. Extension Connector 2 Table 11. Extension Connector 2 Rev. 1.00 Pin# Description Pin# Description 1 B10 2 B11 3 B8 4 B9 5 B6 6 B7 7 NC 8 NC 9 NC 10 NC 11 NC 12 NC 13 C8 14 NC 15 B5 16 C7 17 B3 18 B4 19 NC 20 B2 21 NC 22 NC 23 NC 24 NC 25 NC 26 NC 27 C6 28 NC 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 20, 2015 Hardware Layout � HT32F1654 Starter Kit User Manual Mini USB Type B Connector – U3 1 � 3 4 � Hardware Layout Figure 8. Mini USB Type B Connector Table 12. Mini USB Type B Connector Rev. 1.00 Pin# Description Pin# Description 1 USB_5V 2 D- 3 D+ 4 NC 5 GND 16 of 21 July 20, 2015 HT32F1654 Starter Kit User Manual 3 Schematics This section shows the complete circuit of the HT32F1654 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 20, 2015 JP2 Header 3 JP10 3 2 1 F_PB12 USBDM USBDM C37 0.1uF 1 F_PA0 F_PA1 2 3 F_PA2 4 F_PA3 5 F_PA4 6 F_PA5 7 F_PA6 8 F_PA7 VDD3V3 9 GND 10 F_PC9 11 F_PC10 12 F_PC11 13 F_PC12 14 15 16 VBAT VDD3V3 VDD3V3 GND GND VIN VIN PA0 PA1 PA2 PA3 PA4 PA5 PA6 PA7 VDD33_1 VSS33_1 PC9 PC10 PC11 PC12 UDM/PB12 UDP/PB13 USBDP C10 2.2uF F_PD0 F_PD2 F_PD1 F_PC11 F_PC11 3 2 1 C40 0.1uF F_PB11 F_PB10 F_PB9 F_PB8 F_PB7 F_PB6 GND VDD3V3 F_PC8 F_PC7 F_PB5 F_PB4 F_PB3 F_PB2 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 F_PC1 F_PC3 Header 3 5VT_IO_3 5VT_IO_2 5VT_IO_1 C36 0.1uF LED2 Header 3 F_PB14 F_PD1 USBDM F_PB13 USBDP USBDP C35 0.1uF PC6 PC5 PC4 PB1 PB0 VSS33_3 VDD33_3 PA15 PA14 SWDIO/PA13 SWCLK/PA12 TRACESWO/PA11 PA10 PA9_BOOT1 PA8_BOOT0 PC3 F_PB10 F_PB8 F_PB6 U8 HT32F1654_LQFP64 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 F_PC8 F_PB5 F_PB3 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_PC3 F_PC6 F_PC4 F_PB0 F_PA14 F_PA12 F_PA10 F_PA8 VDD3V3 VDD3V3 GND GND GND VDD5V VDD5V 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 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_PA13 F_PA12 F_PA11 SWDIO SWCLK SWO JP9 Header 3 JP3 Header 3 JP4 Header 3 JP1 Header 3 JP5 Header 3 SW-PB C28 0.01uF Figure 9. MCU, Boot Pins and Extension Connector R2 1M Y2 1 8MHz C5 10pF OSCOUT OSCIN F_PB15 OSCOUT OSCOUT 3 2 1 F_PB14 OSCIN OSCIN 3 2 1 F_PC14 OSC32OUT OSC32OUT F_PC13 OSC32IN OSC32IN 3 2 1 B1 C6 7pF 3 2 1 32768 C12 7pF R8 100K VBAT VDD3V3 VDD3V3 VDD3V3 10M Y3 1 2 3 2 1 R7 nRESET OSC32OUT OSC32IN C38 0.1uF C7 0.1uF F_PC7 F_PB4 F_PB2 F_PC5 F_PB1 F_PA15 F_PA13 F_PA11 F_PA9 VDD3V3 VDD3V3 GND GND GND VDD5V VDD5V VDD5V Header 3 JP6 Header 27x2 F_PA9 F_PA8 F_PB11 F_PB9 F_PB7 1 2 3 4 R31 R1A R2A R3A R4A R1B R2B R3B R4B Header 3 JP7 1 2 3 3 2 1 JP11 C11 0.1uF Bead F_PB13 F_PC14 F_PD0 Header 27x2 JP12 C9 2.2uF 8 7 6 5 R8P4R_1.5K Title 2 C4 10pF Size Number A4 Date: File: 2014-8-12 Sheet of G:\StarterKit\ \HT32F1654 StarterKit MCUDrawn SchDoc By: Revision VDD3V3 L2 LED1 Header 3 GND VIN Bead F_PC9 F_PC11 VDD3V3 L1 1 2 3 F_NRST VDD3V3 VDD3V3 GND GND VIN VIN VDD3V3 GND VDD3V3 VDD3V3 F_PC0 F_PC2 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_PC9 F_PC9 3 2 1 F_PA1 F_PA3 F_PA5 F_PA7 VSSA VDDA PB11 PB10 PB9 PB8 PB7 PB6 VSS33_4 VDD33_4 PC8 PC7 PB5 PB4 PB3 PB2 F_PB15 F_PD2 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 CLDO VDD33_2 VSS33_2 nRST VBAT XTAL32KIN/PC13 XTAL32KOUT/PC14 RTCOUT/PC15 PD0 XTALIN/PB14 XTALOUT/PB15 PD1 PD2 PC0 PC1 PC2 F_PC10 F_PC12 F_PB12 F_PC13 F_PC15 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 17 VDD3V3 18 GND 19 F_NRST 20 21 22 23 F_PC15 24 F_PD0 25 26 27 F_PD1 28 29 F_PD2 F_PC0 30 F_PC1 31 F_PC2 32 F_PA0 F_PA2 F_PA4 F_PA6 J31 9 7 5 3 1 VDD3V3 JP26 10 8 6 4 2 GND nRESET N.C. N.C. GND SWO GND SWCLK VDD SWDIO 10 8 6 4 2 SWD-10P JP27 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 GND GND GND C13 10uF C42 10uF 5V_t 8 7 6 5 Option R1B R2B R3B R4B R1A R2A R3A R4A R8P4R_1K 1 2 3 4 VDD USBDUSBD+ VSS SHELL USB_CONNECTOR 1 2 3 4 5 R4 SS-12W,SS-13W,SS-14W C14 10uF 33 R13 33 C32 47p C1 47p VDD3V3 LED1 LED2 5VT_IO_3 5VT_IO_2 5VT_IO_1 C34 10uF USBDM USBDP VDD5V SS-12W,SS-13W,SS-14W R1 VDD5V SS-12W,SS-13W,SS-14W e-link32 VDD3V3 D9 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: File: Figure 10. SWD Connector, LED Display and the Power Number A4 2014-8-12 Sheet of G:\StarterKit\ \HT32F165x StarterKit Peripheral DrawnSchDoc By: Revision Power VDD3V3 2.2uF C27 PA14/SWCLK PA13/SWDIO HT1253_LQFP48 PB14 PB13 PB2 R9 VDD3V3 100k 8 9 10 A1 A2 DIR1 C26 0.1uF VDD3V3 VDD3V3 PB12 GND PA11/I2C_SCL 1 2 3 4 R32 R1A R2A R3A R4A R1B R2B R3B R4B R8P4R_10K 0.1uF C22 C16 0.01uF VDD3V3 GND PA14/SWCLK PA13/SWDIO NRST JP8 1 2 3 4 5 Header 5 Figure 11. e-Link32 Lite R12 33 1 2 3 4 5 R5 33 R10 1M U9 SN74AVC2T245 B1 B2 GND SWDIO SWCLK GND 5 4 3 1 2 3 4 PA6/SPI_SCK R34 R1A R2A R3A R4A R1B R2B R3B R4B 3 C17 0.1uF 0.1uF C31 47p C2 47p 8 7 6 5 C PB1/OSCO PB0/OSCI PB15 PB14 PB13 PB12 GND VDD GND USBDGND USBD+ GND VSS SHELL R8P4R_1.5K VDD3V3 E C41 VDD3V3 VDD3V3 36 35 34 33 32 31 30 29 28 27 26 25 U5 USB_CONNECTOR R6 470 C39 0.1uF B 1 2 3 PB15 VSSA_1 VDDA VSS33_1 VDD33_1 PB7 PB6 PB5 PB4 PB3 PB2 N.C. VDD18 PB1/OSCO PB0/OSCI PB15 PB14 PB13 PB12 VSS33_3 VSS33_2 VDD33_2 PA15 PA14 PA13 VLDOOUT N.C. VLDOIN VSSLDO nRST VBAT PB8/OSC32I PB9/OSC32O PB10 PB11 PA11 PA12 VSSA_2 PA0 PA1 PA2 PA3 PA4 PA5 PA6 PA7 PA8 PA9 PA10 13 14 15 16 NRST 17 VDD3V3 18 19 20 21 22 PA11/I2C_SCL 23 24 JTDO 1 2 3 PA2 4 PA3 5 6 PA5/SPI_MISO 7 PA6/SPI_SCK 8 PA7/SPI_SEL 9 PA8/UR_RX 10 PA9/UR_TX 11 12 Y1 U1 PA8/UR_RX VDD3V3 VDD5V D5 SS-12W,SS-13W,SS-14W 6 7 8 9 CRYSTAL 16 15 14 13 12 11 10 9 SDO NC V33O UDP UDN VDD VDD VSS HT45B0K C8 10UF 7 6 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 SDI NC SCK SCS CLKI INT VSS NC U6 MMBT3906_SOT23 2 VDD3V3 U10 1 R3 1M SS-12W,SS-13W,SS-14W 8 7 6 5 VDD5V VDD3V3 GND F_NRST GND VDD3V3 3 Busy C3 10UF VDD3V3 C D8 D7 E Err VDD5V B D3 VDD3V3 R8P4R_330 U7 MMBT3904_SOT23 8 7 6 5 F_NRST R33 R1B R2B R3B R4B VDD5V VDD3V3 GND R1A R2A R3A R4A 1 2 3 4 PB2 nRESET SWDIO SWCLK JTDO SWDIO SWCLK SWO R8P4R_10K 2 USB U2 HT7833 1 D11 1 2 PA7/SPI_SEL 3 PA5/SPI_MISO 4 PA3 5 PA2 6 7 8 PA9/UR_TX VCCA VCCB D1 8 7 6 5 DIR2 OE R1B R2B R3B R4B 1 2 R1A R2A R3A R4A PB12 GND R36 1 2 3 4 1 2 3 4 Title Size Number Revision A4 Date: Fil 2014-8-12 G \St t Kit\ \ li k32 S hD Sheet of D B Schematics VDD3V3 PB7 PB6 PB5 HT32F1654 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 20, 2015