STMPE1208S datasheet(40/51 Pages) STMICROELECTRONICS

部品番号	STMPE1208S

部品情報	Xpander Logic with 12-channel touchkey

PDF	51 Pages

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メーカー	STMICROELECTRONICS [STMicroelectronics]

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Command registers

STMPE1208S

40/51

Command registers

The command registers do not have a data field. The device carries out a predetermined

operation upon receiving a write access to these address offset. However, a dummy data-

phase is used to complete the I2C transaction.

Table 8.

Command registers

Command

Operation

0xF8 CLK_SRC_INTERNAL

Use internal OSC as clock source

0xF9 CLK_SRC_EXTERNAL

Use TCLK pin as clock source

0xFA BIAS_OFF

Turns OFF biasing for internal LDO

When external supply is used for V25, turning

OFF the biasing for internal LDO reduces current

consumption

0xFB BIAS_ON

Turns ON biasing for internal LDO

0xFC Wake Up

Exits from sleep and enters Active mode

0xFD Enter Sleep

Enter sleep mode

0xFE Cold Reset

Resets all states and registers

0xFF Warm Reset

Resets internal state machines, register values

remain the same

NOTE: I2C WRITE TO THIS REGISTER WILL

NOT BE ACKNOWLEDGED. However as long as

I2C timing is followed, the writing to this register

will work correctly

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