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STMPE1801 データシート(PDF) 26 Page - STMicroelectronics

部品番号 STMPE1801
部品情報  Xpander Logic™ 18-bit enhanced port expander with keypad controller
PDF  60 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STMPE1801 データシート(HTML) 26 Page - STMicroelectronics

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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.
15
14
13
12
11
10
9876
5
4
3
2
1
0
INT_CTRL_HIGH
INT_CTRL_LOW
Reserved
IC2
IC1
IC0
RRRRRRR
RRR
R
R
R
RW
RW
RW
[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.



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