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STMPE1601 Datasheet(PDF) 30 Page - STMicroelectronics |
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STMPE1601 Datasheet(HTML) 30 Page - STMicroelectronics |
30 / 61 page GPIO controller STMPE1601 30/61 10 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 19. GPIO controller Offset address Register name Description Auto-increment (during sequential R/W) 0x02 GPIO_SET_MSB GPIO set pin state register Yes 0x03 GPIO_SET_LSB Yes 0x04 GPIO_CLR_msb GPIO clear pin state register Yes 0x05 GPIO_CLR_LSB Yes 0x06 GP_MP_MSB GPIO monitor pin state register Yes 0x07 GPIO_MP_LSB Yes 0x08 GPIO_SET_DIR_MSB GPIO set pin direction register Yes 0x09 GPIO_SET_DIR_LSB Yes 0x0A GPIO_ED_MSB GPIO edge detect status register Yes 0x0B GPIO_ED_LSB Yes 0x0C GPIO_RE_MSB GPIO rising edge register Yes 0x0D GPIO_RE_LSB Yes 0x0E GPIO_FE_MSB GPIO falling edge register Yes 0x0F GPIO_FE_LSB Yes 0x10 GPIO_PULL_UP_MS B GPIO pull up register Yes 0x11 GPIO_PULL_UP_LSB Yes 0x12 GPIO_AF_U_MSB GPIO alternate function register (upper word) Yes 0x13 GPIO_AF_U_MSB Yes 0x14 GPIO_AF_L_MSB GPIO alternate function register (lower word) Yes 0x15 GPIO_AF_L_LSB Yes 0x16 GPIO_LT_EN GPIO level translator enable Yes 0x17 GPIO_LT_DIR GPIO level translator direction Yes 0x18-1F RESERVED Reserved Yes |
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