XRA1201 Overview
The XRA1201/1201P is a 16-bit GPIO expander with an I2C/SMBus interface. After power-up, the XRA1201 has internal 100K ohm pull-up resistors on each I/O pin that can be individually enabled. The XRA1201P has the internal pull-up resistors enabled upon power-up in case it is necessary for the inputs to be in a known state.
XRA1201 Key Features
- 1.65V to 3.6V operating voltage
- 16 General Purpose I/Os (GPIOs)
- 5V tolerant inputs
- Maximum stand-by current of 1uA at +1.8V
- I2C/SMBus bus interface
- I2C clock frequency up to 400kHz
- Noise filter on SDA and SCL inputs
- Up to 32 I2C Slave Addresses
- Individually programmable inputs
- Internal pull-up resistors
XRA1201 Applications
- 1.65V to 3.6V operating voltage
