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STMPE1208S Fiches technique(PDF) 40 Page - STMicroelectronics

No de pièce STMPE1208S
Description  Xpander Logic with 12-channel touchkey
PDF  51 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STMPE1208S Fiches technique(HTML) 40 Page - STMicroelectronics

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Command registers
STMPE1208S
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7
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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