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ST7SCR1R4 Fiches technique(PDF) 7 Page - STMicroelectronics |
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ST7SCR1R4 Fiches technique(HTML) 7 Page - STMicroelectronics |
7 / 102 page ST7SCR 7/102 PIN DESCRIPTION (Cont’d) Legend / Abbreviations: Type: I = input, O = output, S = supply In/Output level: CT = CMOS 0.3VDD/0.7VDD with input trigger Output level: HS = 10mA high sink (on N-buffer only) Port and control configuration: – Input:float = floating, wpu = weak pull-up, int = in- terrupt, ana = analog – Output: OD = open drain, PP = push-pull Refer to “I/O PORTS” on page 30 for more details on the software configuration of the I/O ports. Table 1. Pin Description Pin n° Pin Name Level Port / Control Main Function (after reset) Alternate Function Input Output 1 5 CRDRST O CT X X Smartcard Reset 2 NC Not Connected 3 6 CRDCLK O CT X X Smartcard Clock 4 NC Not Connected 57 C4 O CT X X Smartcard C4 6 8 CRDIO I/O CT X X X Smartcard I/O 79 C8 O CT X X Smartcard C8 8 3 GND S Ground 9 PB0 O CT X X Port B0 1) 10 PB1 O CT X X Port B1 1) 11 PB2 O CT X X Port B2 1) 12 PB3 O CT X X Port B3 1) 13 PB4 O CT X X Port B4 1) 14 PB5 O CT X X Port B5 1) 15 PB6 O CT X X Port B6 1) 16 PB7 O CT X X Port B7 1) 17 10 CRDDET I CT X Smartcard Detection 18 VDD S Power Supply voltage 4V-5.5V 19 11 PA0/WAKUP2/ ICCDATA I/O CT X X X X Port A0 Interrupt, In-Circuit Communication Data Input 20 12 PA1/WAKUP2/ ICCCLK I/O CT X X X X Port A1 Interrupt, In-Circuit Communication Clock Input 21 PA2/WAKUP2 I/O CT X X X X Port A2 1) Interrupt 22 PA3/WAKUP2 I/O CT X X X X Port A3 1) Interrupt 23 PD0 O CT X X Port D0 1) 24 PD1 O CT X X Port D1 1) 25 PD2 O CT X X Port D2 1) 1 |
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