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ST72T121J4T3S bảng dữ liệu(PDF) 6 Page - STMicroelectronics |
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6 / 92 page 6/92 ST72E121 ST72T121 Table 1. ST72T121Jx Pin Description Note 1: VPP on EPROM/OTP only. Pin n ° QFP44 Pin n ° SDIP42 Pin Name Type Description Remarks 1 38 PE1/RDI I/O Port E1 or SCI Receive Data In 2 39 PB0 I/O Port B0 External Interrupt: EI2 3 40 PB1 I/O Port B1 External Interrupt: EI2 4 41 PB2 I/O Port B2 External Interrupt: EI2 5 42 PB3 I/O Port B3 External Interrupt: EI2 6 1 PB4 I/O Port B4 External Interrupt: EI3 7 2 PD0 I/O Port D0 8 3 PD1 I/O Port D1 9 4 PD2 I/O Port D2 10 5 PD3 I/O Port D3 11 6 PD4 I/O Port D4 12 7 PD5 I/O Port D5 13 8 VDD_3 S Main Power Supply 14 9 VSS_3 S Ground 15 10 PF0/CLKOUT I/O Port F0 or CPU Clock Output External Interrupt: EI1 16 11 PF1 I/O Port F1 External Interrupt: EI1 17 12 PF2 I/O Port F2 External Interrupt: EI1 18 13 PF4/OCMP1_A I/O Port F4 or Timer A Output Compare 1 19 14 PF6/ICAP1_A I/O Port F6 or Timer A Input Capture 1 20 15 PF7/EXTCLK_A I/O Port F7 or External Clock on Timer A 21 VDD_0 S Main power supply 22 VSS_0 S Ground 23 16 PC0/OCMP2_B I/O Port C0 or Timer B Output Compare 2 24 17 PC1/OCMP1_B I/O Port C1 or Timer B Output Compare 1 25 18 PC2/ICAP2_B I/O Port C2 or Timer B Input Capture 2 26 19 PC3/ICAP1_B I/O Port C3 or Timer B Input Capture 1 27 20 PC4/MISO I/O Port C4 or SPI Master In / Slave Out Data 28 21 PC5/MOSI I/O Port C5 or SPI Master Out / Slave In Data 29 22 PC6/SCK I/O Port C6 or SPI Serial Clock 30 23 PC7/SS I/O Port C7 or SPI Slave Select 31 24 PA3 I/O Port A3 External Interrupt: EI0 32 25 VDD_1 S Main power supply 33 26 VSS_1 S Ground 34 27 PA4 I/O Port A4 High Sink 35 28 PA5 I/O Port A5 High Sink 36 29 PA6 I/O Port A6 High Sink 37 30 PA7 I/O Port A7 High Sink 38 31 TEST/VPP 1) S Test mode pin. In the EPROM programming mode, this pin acts as the programming voltage input VPP. This pin must be tied low in user mode 39 32 RESET I/O Bidirectional. Active low. Top priority non maskable interrupt. 40 33 VSS_2 S Ground 41 34 OSCOUT O Input/Output Oscillator pin. These pins connect a parallel-resonant crystal, or an external source to the on-chip oscillator. 42 35 OSCIN I 43 36 VDD_2 S Main power supply 44 37 PE0/TDO I/O Port E0 or SCI Transmit Data Out 6 |
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