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ST72C171K2B6 Datasheet(PDF) 6 Page - STMicroelectronics |
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ST72C171K2B6 Datasheet(HTML) 6 Page - STMicroelectronics |
6 / 152 page ST72C171 6/152 PIN DESCRIPTION (Cont’d) Legend / Abbreviations: Type: I = input, O = output, S = supply In/Output level: C = CMOS 0.3VDD/0.7VDD, CR = CMOS Levels with resistive output (1K) A = Analog levels Output level: HS = high sink (on N-buffer only), Port configuration capabilities: – Input:float = floating, wpu = weak pull-up, int = interrupt, ana = analog – Output: OD = open drain, T = true open drain, PP = push-pull Note: the Reset configuration of each pin is shown in bold. Table 1. Device Pin Description Pin n° Pin Name Level Port Main function (after reset) Alternate function Input Output 1 1 OA2OUT O A OA2 output 22 PC1/OA2PIN/ PWM1R I/O C C/CR X X X X X Port C1 OA2 noninverting input and/or ART PWM1 resistive output 3 3 PC0/OA2NIN I/O C/A C X X X X X Port C0 OA2 inverting input - 4 OA3PIN I A OA3 noninverting input 4 5 PB7/TDO I/O C X ei1 X X Port B7 SCI transmit 5 6 PB6/RDI I/O C X ei1 X X Port B6 SCI receive 6 7 PB5/MISO/ISPDATA I/O C X ei1 X X Port B5 SPI data master in/slave out or In Situ Programming Data In- put 7 8 PB4/MOSI I/O C HS X ei1 X X Port B4 SPI data master out/slave in 8 9 PB3/SCK/ISPCLK I/O C HS X ei1 X X Port B3 SPI Clock or In Situ Program- ming Clock Output 910PB2/SS I/O C HS X ei1 X X Port B2 SPI Slave Select (active low) 10 11 PB1/ARTCLK I/O C HS X ei1 X X Port B1 ART External Clock 11 12 PB0/EXTCLK I/O C HS X ei1 X X Port B0 Timer16 External Clock 12 13 VDD S Digital Main Supply Voltage 13 14 VSS S Digital ground voltage 14 15 OSC2 Resonator oscillator inverter output or capaci- tor input for RC oscillator 15 16 OSC1 External clock input or Resonator oscillator in- verter input or resistor input for RC oscillator 16 17 ISPSEL I C In Situ Programming Mode Select Must be tied to VSS in user mode 17 18 RESET I/O C X X External Reset 18 19 PA0/AIN0 I/O C X ei0 X X X Port A0 ADC input 0 19 20 PA1/AIN1/ICAP2 I/O C X ei0 X X X Port A1 ADC input 1 orTimer16 input capture 2 |
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