R2A20150SA Description
The R2A20150NP/SA is a CMOS 8-bit I/O expander, which has serial to parallel and parallel to serial data converting functions. It can municate with a microcontroller via few wiring thanks to the adoption of the 2-wire I2C BUS. Maximum 8 ICs can be connected to a bus by using 3-chip select pins, so that it is possible to handle up to 64 bits data.
R2A20150SA Key Features
- Simple 2-wire (SCL and SDA) munication with a microcontroller
- 8-bit data conversion between serial and parallel by I2C BUS
- Corresponds to Fast mode (400kHz) of I2C BUS specification
- Possible to set input and output each bit separately
- By using three chip select pins (CS0,CS1,CS2), R2A20150 can connect with the same BUS line
- Very small package line-up QFN-16 and TSSOP-16
- Chip select data input terminal