The scope of application version upload time size
CH557,CH556 1.6 2022-04-29 941KB
CH557 datasheet. CH557 has a built-in 4-port USB Root-HUB and supports USB master-slave mode, with built-in 128 groups of RGB LED controllers, E8051 core, 8K RAM, 64K ROM. CH557 provides ADC, 2 serial ports, 2 SPIs, etc.

relation files

file name file content
CH555DS1.PDF CH555 datasheet. A USB Keyboard and RGB MCU with E8051 core. It provides 8K RAM, 64K Flash. It has built-in 128 groups of RGB LED controllers and USB Device feature, can be used for customized mechanical keyboard design.