STR71XF datasheet(29/78 Pages) STMICROELECTRONICS

部件名	STR71XF

功能描述	ARM7TDMI??32-bit MCU with Flash, USB, CAN 5 timers, ADC, 10 communications interfaces

PDF	78 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

29 / 78 page

STR71xF

System architecture

29/78

3.6

I/O port configuration

Legend:

AIN: Analog Input

CMOS: CMOS Input levels

IPUPD: Input Pull Up /Pull Down

TTL: TTL Input levels

N.A.: not applicable. In Output mode, a read access to the port gets the output latch value.

Table 8.

Port bit configuration table

Configuration Mode

Input

buffer

PxD

PxC2

PxC1

PxC0

Read

access

Write

access

INPUT

TTL Input Floating

TTL floating

I/O pin

don’t care

CMOS Input Floating

CMOS floating

I/O pin

don’t care

CMOS Input Pull-Down

(IPUPD)

CMOS Pull-

Down

I/O pin

CMOS Input Pull-Up (IPUPD)

CMOS

Pull-Up

I/O pin

Analog input

AIN

don’t care

OUTPUT

Output Open-Drain

N.A.

I/O pin

0 or 1

Output Push-Pull

N.A.

last value

written

0 or 1

Alternate Function Open-Drain CMOS floating

I/O pin

don’t care

Alternate Function Push-Pull

CMOS floating

I/O pin

don’t care

STR71XF 数据表(PDF) 29 Page - STMicroelectronics

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