STMPE1601 STMicroelectronics, STMPE1601 Datasheet - Page 23

• Manufacturer Part Number: STMPE1601
• Description: 16-bit Enhanced Port Expander With Keypad And Pwm Controller Xpander Logic
• Manufacturer: STMicroelectronics

STMPE1601
8.2
Power mode programming sequence
To put the device in sleep mode, the following needs to be done by the host:
To wake up the device, the host is required to:
To do a soft reset to the device, the host needs to do the following:
To go into Hibernate mode, the following needs to be done by the host:
To come out of the Hibernate mode, the following needs to be done by the host:
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Write a '1' to bit 4 of the SYS_CTRL register.
Assert a wakeup routine on the I
device address and the Write bit. Subsequently, proceed with sending the Base
Register address and continue with a normal I
up upon receiving the correct device address and in Write direction. In other
words, the procedure of waking up the device is performed by just sending an I
transaction to the device. This procedure can be extended to wake up the device
that is in hibernate mode.
Write a '1' to bit 7 of the SYS_CTRL register. This bit is automatically cleared upon
reset.
Set the Disable_32K bit to '1'
Assert a system reset
or put a wakeup on the I
2
C
2
C bus by sending the Start bit, followed by the
2
C transaction. The device wakes
Clocking system
23/60
2
C