STMPE1801BJR STMicroelectronics, STMPE1801BJR Datasheet - Page 32

• 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

GPIO controller
10
32/60
GPIO controller
A total of 18 GPIOs are available in the STMPE1801 port expander device. Most of the
GPIOs are sharing physical pins with alternate functions. The GPIO controller contains the
registers that allow the host system to configure each of the pins into either a GPIO, or one
of the alternate functions. Unused GPIOs should be configured as outputs to minimize the
power consumption.
Table 13.
Address
1C
1D
1A
1B
1E
1F
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
GPIO controller registers
GPIO_SET_LOW
GPIO_SET_MID
GPIO_SET_HIGH
GPIO_CLR_LOW
GPIO_CLR_MID
GPIO_CLR_HIGH
GPIO_MP_LOW
GPIO_MP_MID
GPIO_MP_HIGH
GPIO_SET_DIR_LOW
GPIO_SET_DIR_MID
GPIO_SET_DIR_HIGH
GPIO_RE_LOW
GPIO_RE_MID
GPIO_RE_HIGH
GPIO_FE_LOW
GPIO_FE_MID
GPIO_FE_HIGH
GPIO_PULL_UP_LOW
GPIO_PULL_UP_MID
GPIO_PULL_UP_HIGH
Register name
Doc ID 17884 Rev 3
GPIO set pin state register
GPIO clear pin state register
GPIO monitor pin state register
GPIO set pin direction register
GPIO rising edge register
GPIO falling edge register
GPIO pull up register
Description
(during sequential
Auto-increment
R/W)
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
STMPE1801