The scope of application version upload time size
CH457 2.0 2021-11-29 131KB
CH457 datasheet. 128-LED display driver. The CH457 dynamically drives 128 LEDs with 32-bit 4-segment structure or 16-bit 8-segment structure, and supports 2-wire/3-wire serial interface.

relation files

file name file content
CH423DS1.PDF CH423 datasheet. A remote I/O expander with 2-wire serial interface, used for 16 digital tube display or I/O expansion applications through two wires. The input terminal is a two-wire interface compatible with I2C, and the output terminal is an 8-bit bidirectional input/output port and a 16-bit high-current output port.