Overview
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 communicate 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.
Features
- Simple 2-wire (SCL and SDA) communication 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 to maximum 8 pieces.
- Very small package line-up QFN-16 and TSSOP-16.
Comparison
Applications
Documentation
Featured Documentation
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| Type | Title | Date |
| Datasheet | PDF 377 KB 日本語 | |
| Brochure | PDF 5.41 MB 日本語 | |
| End Of Life Notice | PDF 2.17 MB 日本語 | |
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Design & Development
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.
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