CH552 Description
CH552 manual 1 8 Enhanced USB single-chip CH552, CH551 Manual Version: 1 http://wch.cn 1 Overview CH552 chip is a microcontroller core E8051 patible MCS51 enhanced instruction set that 79% of single-byte instructions are single cycle instructions, instruction average velocity MCS51 8 to 15 times faster than the standard. CH552 system supports up to 32MHz frequency, built 16K bytes of program memory ROM and 256 bytes...