ST72361K9-Auto datasheet(78/279 Pages) STMICROELECTRONICS

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I/O ports

ST72361xx-Auto

78/279

Doc ID 12468 Rev 3

8.5

Low power modes

8.6

Interrupts

The external interrupt event generates an interrupt if the corresponding configuration is

selected with DDR and OR registers and the interrupt mask in the CC register is not active

(RIM instruction).

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

Table 32.

Port configuration (continued)

Port

Pin name

Input

Output

OR = 0

OR = 1

OR = 0

OR = 1

Table 33.

Effect of low power modes on I/O ports

Mode

Description

WAIT

No effect on I/O ports. External interrupts cause the device to exit from WAIT mode.

HALT

No effect on I/O ports. External interrupts cause the device to exit from HALT mode.

Table 34.

I/O port interrupt control/wake-up capability

Interrupt event

Event

flag

Enable

control

bit

Exit

from

wait

Exit

from

halt

External interrupt on selected

external event

DDRx

ORx

Yes

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