STEVAL-TCS003V1 STMicroelectronics, STEVAL-TCS003V1 Datasheet - Page 19

• Manufacturer Part Number: STEVAL-TCS003V1
• Description: BOARD DEMO EXPANDER STMPE2403
• Manufacturer: STMicroelectronics

Specifications of STEVAL-TCS003V1

• Main Purpose: Interface, GPIO Expander
• Embedded: No
• Utilized Ic / Part: STMPE2403
• Primary Attributes: 8/16/24-Bit 24-Port GPIO Expander over I2C
• Secondary Attributes: 3 8-Bit PWM Output for LEDs, Keyboard Matrix Scan, Special Key Support
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-8206

STMPE2403
7.2
Table 19. System control register
Table 20. System control register writing
Write (IIC)
Read/
Reset
Value
Bits
Bit
0
1
2
3
4
5
6
7
Soft_Reset Clock_Source Disable_32KHz Sleep Enable_GPIO Enable_PWM Enable_KPC Enable_ROT
System control register
W
Disable_32KHz
7
0
Enable_GPIO
Clock_Source
Enable_PWM
Enable_ROT
Enable_KPC
Soft_Reset
Name
Sleep
RW
6
0
Writing a ‘0’ to this bit will gate off the clock to the Rotator 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 PWM module, thus
stopping its operation
Writing a ‘0’ to this bit will gate off the clock to the GPIO module, thus
stopping its operation
Writing a ‘1’ to this bit will put the device in sleep mode. When in sleep
mode, all the units will work on 32KHz (typical) clock frequency.
Set this bit to disable the 32KHz OSC, thus putting the device in hibernate
mode. Only a Reset or a wakeup on IIC will reset this bit
Set to ‘1’ if external 32KHz clock were to be used. ‘0’ by default.
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.
RW
5
0
RW
4
0
RW
3
1
Description
RW
2
1
RW
System controller
1
1
RW
0
1
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