STMPE1601TBR STMICROELECTRONICS [STMicroelectronics], STMPE1601TBR Datasheet - Page 17

• Manufacturer Part Number: STMPE1601TBR
• Description: 16-bit enhanced port expander with keypad and PWM controller Xpander Logic
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

STMPE1601
SYS_CTRL
Address:
Type:
Buffer:
Reset:
Description:
SOFT_RESET
RW
W
7
0
[7] SOFT_RESET
[6] CLOCK_SOURCE
[5] DIS_32 kHz:
[4] SLEEP:
[3] EN_GPIO:
[2] RESERVED
[1] EN_KPC:
[0] EN_SPWM
SOURCE
CLOCK
0x02
R/W
0x0B
System control register.
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.
Set to ‘1’ if external 32 kHz clock were to be used. ‘0’ by default.
Set this bit to disable the 32 kHz OSC, thus putting the device in hibernate mode.
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.
Writing a ‘0’ to this bit will gate off the clock to the GPIO module, thus stopping its operation
Writing a ‘0’ to this bit will gate off the clock to the Keypad Controller module, thus stopping its
operation
Writing a ‘0’ to this bit will gate off the clock to the Simple PWM Controller module, thus
stopping its operation
RW
R
6
0
DIS_32KHz
RW
R
5
0
System control register
SLEEP
RW
RW
4
0
EN_GPIO
RW
R
3
1
RESERVED
RW
??
R
2
EN_KPC
RW
R
1
1
System controller
EN_SPWM
RW
R
0
1
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