STMPE1601 STMicroelectronics, STMPE1601 Datasheet - Page 24

• Manufacturer Part Number: STMPE1601
• Description: 16-bit Enhanced Port Expander With Keypad And Pwm Controller Xpander Logic
• Manufacturer: STMicroelectronics

Interrupt system
9
9.1
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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 register map
Table 16.
Address
0x10
0x11
0x12
0x13
0x14
0x15
0x16
0x17
0x18
0x19
PWM controller
GPIO controller
INT_CTRL_MSB
INT__CTRL_LSB
INT_EN_MASK_MSB
INT_EN_MASK_LSB
INT_STA_MSB
INT_STA_LSB
INT_EN_GPIO_MASK
_MSB
INT_EN_GPIO_MASK
_LSB
INT_STA_GPIO_MSB
INT_STA_GPIO_LSB
controller
Keypad
Interrupt system
Register map
Register name
Interrupt control register
Interrupt enable mask register
Interrupt status register
Interrupt enable GPIO mask register
Interrupt status GPIO register
Interrupt status
Interrupt enable
register
register
Description
(System control register)
Interrupt polarity control
generation
Interrupt
(during sequential R/W)
Auto-increment
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
STMPE1601