8-bit USB Keyboard and RGB MCU - CH555 - NanjingQinhengMicroelectronics

Overview

CH555 is an enhanced E8051 core MCU, compatible with MCS51 instruction set. 79% of its instructions are single-byte single-cycle instructions. CH555 features fast run speed, and has built-in 64KB Flash-ROM and 8K+256B RAM. CH555 has a built-in full-speed composite USB Device controller and transceiver. The composite USB device controller is composed of a USB device-hub and 3 sub-devices with HID function. CH555 has built-in 3*8 channels of PWM, supports 384 monochrome LEDs or 128 groups of RGB LEDs. CH555 provides abundant interface sources, including 14-channel 12-bit ADC, 3 timers and 2-channel signal capture, 2 UARTs, SPIs, I2C slave and other functional modules. CH555 has built-in 128 RGB LED controllers and USB Device, which can be used for customized mechanical keyboard design.

System Block Diagram

Features

Enhanced E8051 core CPU, the speed can be 8-15 times faster than speed of standard MCS51 core, with special XRAM data fast copy instruction.
Built-in 60KB Code Flash, 1KB Data Flash and 3KB BootLoader. ISP through USB/UART.
Built-in 8KB XRAM and internal 256B RAM.
Built-in full-speed composite USB Device controller and transceiver. The composite USB device controller includes a USB device-hub and 3 sub-devices with HID function. DMA capability.
3 timers/counters. 2-channel signal capture.
2 full-duplex UARTs.
SPI communication interface supports master/slave mode.
One IIC slave controller supports DMA.
LED driver. 384 monochrome LEDs or 128 RGB LEDs.
14-channel 12-bit ADC.
Built-in clock and PLL, and also support external crystal oscillator.
Package: LQFP48.

file name	file content
CH579DS1.PDF	CH579 datasheet. A microcontroller with 32-bit Cortex-M0 core for BLE wireless communication. It provides 250K ROM and 32K SRAM, and the minimum power is 0.2uA. It integrates with Ethernet controller and transceiver, full-speed USB host and device controller and transceiver, segment LCD driver module, 12-bit ADC, touch-key detection module, RTC, etc. It also provides Ethernet and Bluetooth Low Energy protocol stack and API.
CH557DS1.PDF	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.

file name

file content

CH579DS1.PDF

CH579 datasheet. A microcontroller with 32-bit Cortex-M0 core for BLE wireless communication. It provides 250K ROM and 32K SRAM, and the minimum power is 0.2uA. It integrates with Ethernet controller and transceiver, full-speed USB host and device controller and transceiver, segment LCD driver module, 12-bit ADC, touch-key detection module, RTC, etc. It also provides Ethernet and Bluetooth Low Energy protocol stack and API.

CH557DS1.PDF

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.