STMPE821 datasheet(16/55 Pages) STMICROELECTRONICS

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System and identification registers

STMPE821

16/55

SYS_CFG_1

System configuration 1

Address:

0x03

Type:

R/W

Reset:

0x00

Description:

The reset control register enables to reset the device

SYS_CFG_2

System configuration 2

Address:

0x04

Type:

R/W

Reset:

0xEF

Description:

This register enables to switch off the clock supply

7654

RESERVED

SLEEP

WARM_RESET

SOFT_RESET

HIBERNATE

[7:4] RESERVED

[3] SLEEP:

Write ‘1’ to enable sleep mode

[2] WARM_RESET:

Write ‘1’ to initiate a warm reset. Register content remains, state machine reset.

[1] SOFT_RESET:

Write ‘1’ to initiate a soft reset. All registers content and state machines reset.

[0] HIBERNATE: Force the device into hibernation mode.

Write ‘1’ to enter the hibernate mode,

7654

SENSOR

CLOCK 2

SENSOR

CLOCK 1

SENSOR

CLOCK 0

−

PWM CLOCK

DISABLE

GPIO CLOCK

DISABLE

FIFO CLOCK

DISABLE

TOUCH CLOCK

DISABLE

[7:5] SENSOR CLOCK: See description in the table below.

[4] RESERVED

[3] PWM CLOCK DISABLE:

Write ‘1’ to disable the clock to PWM unit.

[2] GPIO CLOCK DISABLE:

Write ‘1’ to disable the clock to GPIO unit. Note that GPIO clock is required for PWM operation.

[1] FIFO CLOCK DISABLE:

Write ‘1’ to disable the clock to FIFO unit. This must be set to ‘0’ if touch interrupt is required.

[0] TOUCH CLOCK DISABLE:

Write ‘1’ to disable the clock to TOUCH unit.

STMPE821 数据表(PDF) 16 Page - STMicroelectronics

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STMPE821 数据表(PDF) 16 Page - STMicroelectronics

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