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STMPE1601TBR Datasheet(PDF) 23 Page - STMicroelectronics

Part # STMPE1601TBR
Description  16-bit enhanced port expander with keypad and PWM controller Xpander Logic
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STMPE1601TBR Datasheet(HTML) 23 Page - STMicroelectronics

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STMPE1601
Interrupt system
23/58
9
Interrupt system
The STMPE1601 uses a highly flexible interrupt system. It allows the host system to
configure the type of system events that should result in an interrupt, and pinpoints the
source of interrupt by status register. The INT pin can be configured as ACTIVE HIGH, or
ACTIVE LOW.
Once asserted, the INT pin would de-assert only if the corresponding bit in the interrupt
status register is cleared.
Figure 6.
Interrupt system
9.1
Interrupt system register map
Keypad
controller
PWM controller
GPIO controller
Interrupt status
register
Interrupt enable
register
Interrupt
generation
Interrupt polarity control
(System control register)
Table 16.
Register map
Address
Register name
Description
Auto-increment
(during sequential R/W)
0x10
INT_CTRL_MSB
Interrupt control register
Yes
0x11
INT__CTRL_LSB
Yes
0x12
INT_EN_MASK_MSB
Interrupt enable mask register
Yes
0x13
INT_EN_MASK_LSB
Yes
0x14
INT_STA_MSB
Interrupt status register
Yes
0x15
INT_STA_LSB
Yes
0x16
INT_EN_GPIO_MASK
_MSB
Interrupt enable GPIO mask register
Yes
0x17
INT_EN_GPIO_MASK
_LSB
Yes
0x18
INT_STA_GPIO_MSB
Interrupt status GPIO register
Yes
0x19
INT_STA_GPIO_LSB
Yes


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