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ST7232AJ1B5 Datasheet(PDF) 10 Page - STMicroelectronics |
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ST7232AJ1B5 Datasheet(HTML) 10 Page - STMicroelectronics |
10 / 157 page ST7232A 10/157 PIN DESCRIPTION (Cont’d) For external pin connection guidelines, refer to See “ELECTRICAL CHARACTERISTICS” on page 113. Legend / Abbreviations for Table 1: Type: I = input, O = output, S = supply Input level: A = Dedicated analog input In/Output level: C = CMOS 0.3VDD/0.7VDD CT= CMOS 0.3VDD/0.7VDD with input trigger Output level: HS = 20mA high sink (on N-buffer only) Port and control configuration: – Input: float = floating, wpu = weak pull-up, int = interrupt 1), ana = analog ports – Output: OD = open drain 2), PP = push-pull Refer to “I/O PORTS” on page 42 for more details on the software configuration of the I/O ports. The RESET configuration of each pin is shown in bold. This configuration is valid as long as the device is in reset state. Table 1. Device Pin Description Pin n° Pin Name Level Port Main function (after reset) Alternate Function Input Output 6 1 30 1 PB4 (HS) I/O CT HS X ei3 X X Port B4 7 2 31 2 PD0/AIN0 I/O CT X X X X X Port D0 ADC Analog Input 0 8 3 32 3 PD1/AIN1 I/O CT X X X X X Port D1 ADC Analog Input 1 9 4 PD2/AIN2 I/O CT X X X X X Port D2 ADC Analog Input 2 10 5 PD3/AIN3 I/O CT X X X X X Port D3 ADC Analog Input 3 11 6 PD4/AIN4 I/O CT X X X X X Port D4 ADC Analog Input 4 12 7 PD5/AIN5 I/O CT X X X X X Port D5 ADC Analog Input 5 13 8 1 4 VAREF S Analog Reference Voltage for ADC 14 9 2 5 VSSA S Analog Ground Voltage 15 10 3 6 PF0/MCO/AIN8 I/O CT X ei1 X X X Port F0 Main clock out (fCPU) ADC Analog Input 8 16 11 4 7 PF1 (HS)/BEEP I/O CT HS X ei1 X X Port F1 Beep signal output 17 12 PF2 (HS) I/O CT HS X ei1 X X Port F2 18 13 5 8 PF4/OCMP1_A/ AIN10 I/O CT X XX X X Port F4 Timer A Out- put Com- pare 1 ADC Analog Input 10 19 14 6 9 PF6 (HS)/ICAP1_A I/O CT HS X X X X Port F6 Timer A Input Capture 1 20 15 7 10 PF7 (HS)/ EXTCLK_A I/O CT HS X XX X Port F7 Timer A External Clock Source 21 VDD_0 S Digital Main Supply Voltage 22 VSS_0 S Digital Ground Voltage 23 16 8 11 PC0/OCMP2_B/ AIN12 I/O CT X XX X X Port C0 Timer B Out- put Com- pare 2 ADC Analog Input 12 1 |
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