STMPE1601TBR STMICROELECTRONICS [STMicroelectronics], STMPE1601TBR Datasheet - Page 26

• Manufacturer Part Number: STMPE1601TBR
• Description: 16-bit enhanced port expander with keypad and PWM controller Xpander Logic
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Interrupt system
INT_STA
Address:
Type:
Buffer:
Reset:
Description:
26/58
15
R
0
14
R
0
[15:9]
[8:0] IS[x]:
13
R
0
0x14, 0x15
R, R/W
0x00
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.
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.
ISR_msb
12
R
0
11
R
0
10
R
0
Interrupt status register
R
9
0
RW
IS8
8
0
7
0
-
-
6
0
-
-
RW
IS5
5
0
RW
IS4
4
0
ISR_lsb
RW
IS3
3
0
IS2
RW
2
0
IS1
RW
1
0
STMPE1601
RW
IS0
0
0