STMPE1601 datasheet(27/61 Pages) STMICROELECTRONICS

No de pièce	STMPE1601

Description	16-bit enhanced port expander with keypad and PWM controller Xpander Logic

PDF	61 Pages

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Fabricant	STMICROELECTRONICS [STMicroelectronics]

Site Internet	http://www.st.com

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27 / 61 page

STMPE1601

Interrupt system

27/61

INT_STA

Interrupt status register

Address:

0x14, 0x15

Type:

R, R/W

Reset:

0x00

Description:

The interrupt status register monitors the status of the interruption from a particular

interrupt source to the host. Regardless whether the INT_EN bits are enabled or not,

the INT_STA bits are still updated.

7654

3210

ISR_msb

ISR_lsb

IS8IS8

IS8IS5

IS4

IS3

IS2IS1

IS0

RRRRRR

000000

0000

[15:9] RESERVED

[8:0] IS[x]:

Interrupt status (where x = 8 to 0)

Read:

IE0: Wake-up Interrupt Status

IE1: Keypad controller interrupt status

IE2: Keypad controller FIFO overflow interrupt status

IE3: Reserved

IE4: Basic PWM controller 0 interrupt status

IE5: Basic PWM controller 1 interrupt status

IE6: Basic PWM controller 2 Interrupt status

IE7: Basic PWM controller 3 interrupt status

IE8: GPIO Controller Interrupt Status

Write: a write to a IS[x] bit with a value of ‘1’ will clear the interrupt and a write with a value of ‘0’

has no effect on the IS[x] bit.

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