STMPE2401 datasheet(26/55 Pages) STMICROELECTRONICS

No de pièce	STMPE2401

Description	24-bit Enhanced port expander with Keypad and PWM controller Xpander logic

PDF	55 Pages

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Fabricant	STMICROELECTRONICS [STMicroelectronics]

Site Internet	http://www.st.com

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Interrupt system

STMPE2401

26/55

9.6

Interrupt status GPIO register (ISGPIOR)

ISGPIOR register monitors the status of the interruption from a particular GPIO pin interrupt

source to the host. Regardless whether the IEGPIOR bits are enabled or not, the ISGPIOR

bits are still updated. The ISG[15:0] bits are the interrupt status bits correspond to the

GPIO[15:0] pins.

ISGPIOR _lsb

Bit

2322

212019181716

IEG

R/W

RW RWRWRW RW RWRWRW

Reset

Value

00000

000

ISGPIOR_msb

ISGPIOR _lsb

Bit

76543

210

ISG

R/W

RWRWRWRWRWRW

RW RW RW RW RW RW RW RW RW RW

Reset

Value

00000

000

Table 25. GPIO

Bits

Name

Description

23:0

ISG[x] Interrupt Status GPIO (where x = 23 to 0)

Read:

Interrupt Status of the GPIO[x].

Write:

A write to a ISG[x] bit with a value of ‘1’ will clear the interrupt and a write with a

value of ‘0’ has no effect on the ISG[x] bit.

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