ST72561 datasheet(52/262 Pages) STMICROELECTRONICS

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ST72561

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I/O PORTS (Cont’d)

Table 13. Port Configuration

* Note: when the CANTX alternate function is selected, the I/O port operates in output push-pull mode.

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

controlled by CANTX *

PC7:5

floating

pull-up

open drain

push-pull

Port D

PD0

floating

pull-up interrupt (ei3)

open drain

push-pull

PD1

floating interrupt (ei3)

PD3:2

pull-up

PD4

floating interrupt (ei3)

PD5

pull-up

PD6

pull-up interrupt (ei3)

PD7

floating interrupt (ei3)

Port E

PE7:0

floating (TTL)

pull-up (TTL)

open drain

push-pull

Port F

PF7:0

floating (TTL)

pull-up (TTL)

open drain

push-pull

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