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The CMS89F12x series of microcontrollers are CMS independent 8-bit RISC core microcontrollers,  internal reference source can be 1.8~5.5V. providing 4Kx16ROM, 256x8 RAM, 32x16 Pro EE,ADC、PWM、USART、LVD and so on. Provide SOP16 and SOP20 package.

> 8-bit RISC core

> Operating voltage range:

   2.5V-5.5V@16MHz

   1.8V-5.5V@8MHz

> Operating temperature range: -40℃ - +85℃

> Flash: 4Kx16

> General RAM: 256x8

>Two 8-bit universal timers TIMER0, TIMER2

  TIMER2 can select external 32.768KHz oscillation

>PWM module with complementary output

5-way PWM, which can be set as 2-way complementary output

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

5-way PWM common cycle, independent duty cycle

>Built in 1-way USART communication module, supporting synchronous master-slave mode and asynchronous full duplex mode

>Interrupt source

2 timed interrupts

RB interface level change interrupt

Other peripherals interrupt

>Built in low-voltage detection circuit, internal reset voltage: 1.8V/2.1V/2.5V/3.0V

>18 channel 12 bit A/D conversion (ADC)

Built in high-precision 0.6V reference voltage

±1.5% @VDD=2.5 - 5.5V TA=25℃

±2% @VDD=2.5V - 5.5V TA=-40℃ - 85℃

Optional internal reference source: 1.2V/2V/2.4V/3.0V

>Built-in 32-byte program EEPROM

>Built-in LVD module

Support multiple voltage 2.2V/2.4V/2.7V/3.0V/3.3V/3.7V/4.0V/4.3V

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

>Package types: SOP16, SOP20.