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ST7232AK1B1 Fiches technique(PDF) 9 Page - STMicroelectronics |
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ST7232AK1B1 Fiches technique(HTML) 9 Page - STMicroelectronics |
9 / 154 page ST7232A 9/154 PIN DESCRIPTION (Cont’d) For external pin connection guidelines, refer to See “ELECTRICAL CHARACTERISTICS” on page 111. 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 40 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 14 VAREF S Analog Reference Voltage for ADC 25 VSSA S Analog Ground Voltage 3 6 PF0/MCO/AIN8 I/O CT X ei1 X X X Port F0 Main clock out (fOSC/2) ADC Analog Input 8 4 7 PF1 (HS)/BEEP I/O CT HS X ei1 X X Port F1 Beep signal output 58 PF4/OCMP1_A/ AIN10 I/O CT X XX X X Port F4 Timer A Out- put Com- pare 1 ADC Analog Input 10 6 9 PF6 (HS)/ICAP1_A I/O CT HS X X X X Port F6 Timer A Input Capture 1 710 PF7 (HS)/ EXTCLK_A I/O CT HS X XX X Port F7 Timer A External Clock Source 811 PC0/OCMP2_B/ AIN12 I/O CT X XX X X Port C0 Timer B Out- put Com- pare 2 ADC Analog Input 12 912 PC1/OCMP1_B/ AIN13 I/O CT X XX X X Port C1 Timer B Out- put Com- pare 1 ADC Analog Input 13 10 13 PC2 (HS)/ICAP2_B I/O CT HS X X X X Port C2 Timer B Input Capture 2 11 14 PC3 (HS)/ICAP1_B I/O CT HS X X X X Port C3 Timer B Input Capture 1 12 15 PC4/MISO/ICCDA- TA I/O CT X XX X Port C4 SPI Master In / Slave Out Data ICC Data In- put 13 16 PC5/MOSI/AIN14 I/O CT X XX X X Port C5 SPI Master Out / Slave In Data ADC Analog Input 14 14 17 PC6/SCK/ICCCLK I/O CT X XX X Port C6 SPI Serial Clock ICC Clock Output 1 |
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