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ST10R272 Arkusz danych(PDF) 10 Page - STMicroelectronics |
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10 / 77 page 10/77 ST10R272L - PIN DESCRIPTION P2.8 – P2.11 90 - 93 I/O 5T Port 2 is a 4-bit bidirectional I/O port. It is bit-wise programma- ble for input or output via direction bits. For a pin configured as input, the output driver is put into high-impedance state. Port 2 outputs can be configured as push/pull or open drain drivers. The following Port 2 pins have alternate functions: 90 I 5T P2.8 EX0IN Fast External Interrupt 0 Input ... ... ... ... ... ... 93 I 5T P2.11 EX3IN Fast External Interrupt 3 Input P7.0 – P7.3 94 - 97 I/O 5T Port 7 is a 4-bit bidirectional I/O port. It is bit-wise programma- ble for input or output via direction bits. For a pin configured as input, the output driver is put into high-impedance state. Port 7outputs can be configured as push/pull or open drain drivers. The following Port 7 pins have alternate functions: 97 O 5T P7.3 POUT3 PWM (Channel 3) Output RPD 40 I/O 5T Input timing pin for the return from powerdown circuit and power-up asynchronous reset. VDD 7, 28, 38, 49, 69, 78 - PO Digital supply voltage. VSS 4, 27, 39, 50, 70, 77 - PO Digital ground. 1) The following I/O kinds are used. Refer to ELECTRICAL CHARACTERISTICS on page 40 for a detailed description. PO: Power pin 3T: 3 V tolerant pin (voltage max. respect to Vss is -0.5 to VDD + 0.5) 5V: 5 V tolerant pin (voltage max. respect to Vss is -0.5 to 5.5 only if chip is powered) 5S: 5 V tolerant and fail-safe pin (-0.5-5.5 max. voltage w.r.t. Vss even if chip is not pow- ered). Table 1 Pin definitions 1 |
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