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Description:
The CH554 chip is an enhanced E8051 core microcontroller compatible with the MCS51 instruction set. Its 79% instruction is a single-byte single-cycle instruction, and the average instruction speed is 8 to 15 times faster than the standard MCS51. The CH554 supports up to 32MHz system clock speed, built-in 16K program memory ROM and 256 bytes internal iRAM and 1K bytes of on-chip xRAM. xRAM supports DMA direct memory access. CH554 has built-in ADC analog-to-digital conversion, touch button capacitance detection, 3 groups of timers and signal capture and PWM, dual asynchronous serial port, SPI and other functional modules, supporting USB-Host host mode and USB-Device device mode.