ST72361J4-Auto datasheet(77/279 Pages) STMICROELECTRONICS

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ST72361xx-Auto

I/O ports

Doc ID 12468 Rev 3

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8.4.3

Pull-up input port

The PC4 port cannot operate as a general purpose output. If DDR = 1 it is still possible to

read the port through the DR register.

Table 31.

Configuration of PC4

Mode

pull-up input

Table 32.

Port configuration

Port

Pin name

Input

Output

OR = 0

OR = 1

OR = 0

OR = 1

Port A

PA0

floating

pull-up interrupt (ei0)

open drain

push-pull

PA1

floating interrupt (ei0)

PA2

pull-up interrupt (ei0)

PA3

floating interrupt (ei0)

PA4

pull-up interrupt (ei0)

PA5

floating interrupt (ei0)

PA6

pull-up interrupt (ei0)

PA7

floating interrupt (ei0)

Port B

PB0

floating

pull-up interrupt (ei1)

open drain

push-pull

PB1

floating interrupt (ei1)

PB2

pull-up interrupt (ei1)

PB3

floating interrupt (ei1)

PB4

pull-up interrupt (ei1)

PB5

floating interrupt (ei1)

Port C

PC0

floating

pull-up

open drain

push-pull

PC1

pull-up interrupt (ei2)

PC2

floating interrupt (ei2)

PC3

pull-up

PC4

pull-up

PC7:5

floating

pull-up

open drain

push-pull

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