STMPE1601 STMicroelectronics, STMPE1601 Datasheet - Page 30

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

GPIO controller
10
30/60
GPIO controller
A total of 16 GPIOs are available in the STMPE1601 port expander IC. Most of the GPIOs
are sharing physical pins with some 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 18.
Offset address
0x18-1F
0x0A
0x0B
0x0C
0x0D
0x0E
0x02
0x03
0x04
0x05
0x06
0x07
0x08
0x09
0x0F
0x10
0x11
0x12
0x13
0x14
0x15
0x16
0x17
GPIO controller
GPIO_SET_MSB
GPIO_SET_LSB
GPIO_CLR_msb
GPIO_CLR_LSB
GP_MP_MSB
GPIO_MP_LSB
GPIO_SET_DIR_MSB
GPIO_SET_DIR_LSB
GPIO_ED_MSB
GPIO_ED_LSB
GPIO_RE_MSB
GPIO_RE_LSB
GPIO_FE_MSB
GPIO_FE_LSB
GPIO_PULL_UP_MS
B
GPIO_PULL_UP_LSB
GPIO_AF_U_MSB
GPIO_AF_U_MSB
GPIO_AF_L_MSB
GPIO_AF_L_LSB
GPIO_LT_EN
GPIO_LT_DIR
RESERVED
Register name
GPIO set pin state register
GPIO clear pin state register
GPIO monitor pin state register
GPIO set pin direction register
GPIO edge detect status
register
GPIO rising edge register
GPIO falling edge register
GPIO pull up register
GPIO alternate function
register (upper bit)
GPIO alternate function
register (lower bit)
GPIO level translator enable
GPIO level translator direction
Reserved
Description
(during sequential R/W)
Auto-increment
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
STMPE1601