STMPE1601 datasheet(17/58 Pages) STMICROELECTRONICS

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STMPE1601

System controller

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SYS_CTRL

System control register

Address:

0x02

Type:

R/W

Buffer:

Reset:

0x0B

Description:

System control register.

SOFT_RESET

CLOCK

SOURCE

DIS_32KHz

SLEEP

EN_GPIO

RESERVED

EN_KPC

EN_SPWM

RWRWRW

RWRW

1??1

[7] SOFT_RESET

Writing a ‘1’ to this bit will do a soft reset of the device. Once the reset is done, this bit will be

cleared to ‘0’ by the HW.

[6] CLOCK_SOURCE

Set to ‘1’ if external 32 kHz clock were to be used. ‘0’ by default.

[5] DIS_32 kHz:

Set this bit to disable the 32 kHz OSC, thus putting the device in hibernate mode.

[4] SLEEP:

Writing a ‘1’ to this bit will put the device in sleep mode. On going to sleep mode, this mode is

reset internally. When in sleep mode, the internal RC oscillator will output a slower sleep clock

which will be used in the device.

[3] EN_GPIO:

Writing a ‘0’ to this bit will gate off the clock to the GPIO module, thus stopping its operation

[2] RESERVED

[1] EN_KPC:

Writing a ‘0’ to this bit will gate off the clock to the Keypad Controller module, thus stopping its

operation

[0] EN_SPWM

Writing a ‘0’ to this bit will gate off the clock to the Simple PWM Controller module, thus

stopping its operation

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