STMPE1601 datasheet(24/61 Pages) STMICROELECTRONICS

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Interrupt system

STMPE1601

24/61

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

Interrupt enable

Interrupt

generation

Interrupt polarity control

(System control register)

Table 17.

Address

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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