CMS89F552xB MCU is Cmsemicon's independent 8-bit RISC core MCU, working voltage 1.8V~5.5V, providing 4Kx16ROM, 256x8 RAM, 32x16 Pro EE, Touch, ADC,  PWM, LVD and so on. Which provides SOP16/SOP20 packages.

> RISC core

> Operating voltage range:

> 2.5V-5.5V@16MHz

> 1.8V-5.5V@8MHz

> ROM: 4Kx16

> General RAM: 344x8

> Two 8-bit universal timers TIMER0, TIMER2

TIMER2 can select external 32.768 KHz oscillation

> Build-in 17-channel of touch detect module

> 2 High Performance Amplifiers

> PWM module with complementary output

5-way PWM, set to 2 complementary outputs

RB0/RB1, RB3/RB4 enable 70mA high current drive

5-way PWM common cycle, independent duty cycle

> Interrupt source

> 2 timed interrupts

> A port level change interrupt

> Build-in LVD, reset voltage 1.8V/2.1V/2.5V/3.0V

> High precision 12-bit ADC

Built-in high precision 0.6V reference voltage

±1.5% @VDD=2.5V~5.5V TA=25℃

 ±2% @VDD=2.5 V~5.5V TA=-40℃~85℃

> Two 8-bit timers with built-in 32 byte program EEPROM

> Built in LVD module

> Internal RC oscillation: design frequency 8MHz/16MHz

> Package type: SOP16, SOP20