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ST72F321J9 Datasheet(PDF) 10 Page - STMicroelectronics |
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ST72F321J9 Datasheet(HTML) 10 Page - STMicroelectronics |
10 / 179 page ST72321J 10/179 Notes: 1. In the interrupt input column, “eiX” defines the associated external interrupt vector. If the weak pull-up column (wpu) is merged with the interrupt column (int), then the I/O configuration is pull-up interrupt input, else the configuration is floating interrupt input. 2. In the open drain output column, “T” defines a true open drain I/O (P-Buffer and protection diode to VDD are not implemented). See See “I/O PORTS” on page 44. and Section 12.8 I/O PORT PIN CHARACTER- ISTICS for more details. 3. OSC1 and OSC2 pins connect a crystal/ceramic resonator, an RC oscillator, or an external source to 27 PC4/MISO/ICCDA- TA I/O CT X X X X Port C4 SPI Master In / Slave Out Data ICC Data Input 28 PC5/MOSI/AIN14 I/O CT X X X X X Port C5 SPI Master Out / Slave In Data ADC Analog Input 14 29 PC6/SCK/ICCCLK I/O CT X XX X Port C6 SPI Serial Clock ICC Clock Output Caution: During normal operation, this pin must be pulled-up, internally or externally, to avoid entering ICC mode unexpectedly during a reset. 30 PC7/SS/AIN15 I/O CT X X X X X Port C7 SPI Slave Select (active low) ADC Analog Input 15 31 PA3 (HS) I/O CT HS X ei0 X X Port A3 32 VDD_1 S Digital Main Supply Voltage 33 VSS_1 S Digital Ground Voltage 34 PA4 (HS) I/O CT HS X X X X Port A4 35 PA5 (HS) I/O CT HS X X X X Port A5 36 PA6 (HS)/SDAI/ I/O CT HS X T Port A6 I2C Data 2) 37 PA7 (HS)/SCLI I/O CT HS X T Port A7 I2C Clock 2) 38 VPP /ICCSEL I Must be tied low. In the flash programming mode, this pin acts as the programming voltage input VPP. See Section 12.9.2 for more details. High voltage must not be applied to ROM devic- es. 39 RESET I/O CT Top priority non maskable interrupt. 40 VSS_2 S Digital Ground Voltage 41 OSC2 O Resonator oscillator inverter output or capacitor input for RC oscillator 42 OSC1 I External clock input or Resonator oscillator in- verter input or resistor input for RC oscillator 43 VDD_2 S Digital Main Supply Voltage 44 PE0/TDO I/O CT X X X X Port E0 SCI Transmit Data Out 1 PE1/RDI I/O CT X X X X Port E1 SCI Receive Data In 2 PB0/PWM3 I/O CT X ei2 X X Port B0 PWM Output 3 3 PB1/PWM2 I/O CT X ei2 X X Port B1 PWM Output 2 4 PB2/PWM1 I/O CT X ei2 X X Port B2 PWM Output 1 5 PB3/PWM0 I/O CT X ei2 X X Port B3 PWM Output 0 Pin n° Pin Name Level Port Main function (after reset) Alternate Function Input Output |
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