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HT66F40 数据表(PDF) 14 Page - Holtek Semiconductor Inc |
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HT66F40 数据表(HTML) 14 Page - Holtek Semiconductor Inc |
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14 / 244 page  Pin Description With the exception of the power pins, all pins on these devices can be referenced by their Port name, e.g. PA.0, PA.1 etc, which refer to the digital I/O function of the pins. However these Port pins are also shared with other function such as the Serial Port pins etc. The function of each pin is listed in the following table, however the details behind how each pin is configured is contained in other sections of the datasheet. The following tables only include the pins which are directly related to the MCU. The pin descriptions of the additional peripheral functions are located at the end of the datasheet along with the relevant peripheral function functional de- scription. HT68F20 Pin Name Function OP I/T O/T Pin-Shared Mapping PA0~PA7 Port A PAWU PAPU ST CMOS ¾ PB0~PB5 Port B PBPU ST CMOS ¾ PC0~PC3 Port C PCPU ST CMOS ¾ C0-, C1- Comparator 0, 1 input CP0C CP1C AN ¾ PA3, PC3 C0+, C1+ Comparator 0, 1 input AN ¾ PA2, PC2 C0X, C1X Comparator 0, 1 output ¾ CMOS PA0, PA5 TCK0, TCK1 TM0, TM1 input ¾ ST ¾ PA2, PA4 TP0_0 TM0 I/O TMPC0 ST CMOS PA0 TP1_0, TP1_1 TM1 I/O TMPC0 ST CMOS PA1, PC0 INT0, INT1 Ext. Interrupt 0, 1 ¾ ST ¾ PA3, PA4 PINT Peripheral Interrupt ¾ ST ¾ PC3 PCK Peripheral Clock output ¾¾ CMOS PC2 SDI SPI Data input ¾ ST ¾ PA6 SDO SPI Data output ¾¾ CMOS PA5 SCS SPI Slave Select ¾ ST CMOS PB5 SCK SPI Serial Clock ¾ ST CMOS PA7 SCL I 2C Clock ¾ ST NMOS PA7 SDA I 2C Data ¾ ST NMOS PA6 SCOM0~SCOM3 SCOM0~SCOM3 SCOMC ¾ SCOM PC0, PC1, PC2, PC3 OSC1 HXT/ERC pin CO HXT ¾ PB1 OSC2 HXT pin CO ¾ HXT PB2 XT1 LXT pin CO LXT ¾ PB3 XT2 LXT pin CO ¾ LXT PB4 RES Reset input CO ST ¾ PB0 VDD Power supply ¾ PWR ¾¾ VSS Ground ¾ PWR ¾¾ Note: I/T: Input type; O/T: Output type OP: Optional by configuration option (CO) or register option PWR: Power; CO: Configuration option; ST: Schmitt Trigger input CMOS: CMOS output; NMOS: NMOS output SCOM: Software controlled LCD COM; AN: Analog input pin HXT: High frequency crystal oscillator LXT: Low frequency crystal oscillator As the Pin Description Summary table applies to the package type with the most pins, not all of the above listed pins may be present on package types with smaller numbers of pins. HT68F20/HT68F30/HT68F40/HT68F50/HT68F60 HT68FU30/HT68FU40/HT68FU50/HT68FU60 Rev. 1.60 14 October 24, 2011 |
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