STMPE1801 datasheet(26/60 Pages) STMICROELECTRONICS

No. de pieza	STMPE1801

Descripción Electrónicos	Xpander Logic™ 18-bit enhanced port expander with keypad controller

PDF	60 Pages

Scroll/Zoom	100%

Fabricante Electrónico	STMICROELECTRONICS [STMicroelectronics]

Página de inicio	http://www.st.com

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26 / 60 page

Interrupt system

STMPE1801

26/60

Doc ID 17884 Rev 3

INT_CTRL

Interrupt control register

Address:

04, 05

Type:

R, R/W

Reset:

0x00

Description:

The interrupt control register is used to configure the interrupt controller. It has global

enable interrupt mask bit that controls the interruption to the host.

9876

INT_CTRL_HIGH

INT_CTRL_LOW

Reserved

IC2

IC1

IC0

RRRRRRR

RRR

[15:3] RESERVED

[2] IC2: Output Interrupt polarity

‘0’ = Active low/falling edge

‘1’ = Active high/rising edge

[1] IC1: Output Interrupt type

‘0’ = Level interrupt

‘1’ = Edge interrupt (Pulse width of 200µs)

[0] IC0: Global interrupt mask bit

When this bit is written a ‘1’, it allows interruption to the host. If it is written with a ‘0’, then, it

disables all interruption to the host. Writing to this bit does not affect the INT_EN_MASK value.

STMPE1801 Datasheet(PDF) 26 Page - STMicroelectronics