STMPE1801BJR STMicroelectronics, STMPE1801BJR Datasheet - Page 22

• Manufacturer Part Number: STMPE1801BJR
• Description: Touch Screen Converters & Controllers Xpander Logic 18-Bit 18 GPIO 1.65 to 3.6V
• Manufacturer: STMicroelectronics

Specifications of STMPE1801BJR

• Rohs: yes
• Input Type: 1 Keypad
• Data Rate: 400 kbps
• Resolution: 18 bit
• Interface Type: I2C
• Supply Voltage: 1.65 V to 3.6 V
• Supply Current: 28 uA
• Operating Temperature: - 40 C to + 85 C
• Package / Case: CSP-25
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Supply Voltage - Max: 3.6 V
• Supply Voltage - Min: 1.65 V

Clocking system
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8.0.1
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Clocking system
In order to reduce the power consumption, the STMPE1801 turns off the oscillator during
Hibernate mode.
Figure 5.
Clock source
By default, when the STMPE1801 powers up, it derives a 32 kHz clock from the internal RC
oscillator for its operation.
There are 4 sources of reset:
●
●
●
●
RSTB pin
Low voltage detect (LVD) reset
Soft reset bit of the SYS_CTRL register
I
2
C reset from the I
Clocking system
2
C block.
Doc ID 17884 Rev 3
STMPE1801