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CMS89F23x5B series MCU is Cmsemicon's independent 8-bit RISC core MCU. Operating voltage 2.5V to 5.5V; provide 8Kx16 Flash, 344x8 RAM, 64x8 Data EE, built-in LED, LCD driver, ADC, 2 PWM, 2 USART modules, available in SOP16, SOP20, SOP28 and LQFP32 packages.

> RISC core

> Operating voltage: 3.0V-5.5V @8MHz 2.5V-5.5V @4MHz

> Operating temperature: -40℃-85℃

> 8Kx16 Flash

> 344x8 RAM

> Built-in 64-byte data EEPROM, re-erasable 100 Ten thousand times

> 3 general-purpose timers

> Interrupt source supports 3 timing interrupts, RB port level change interrupts, and other peripheral interrupts

> 2 PWM shared cycles, independent duty cycle

> High-precision 12-bit ADC

built-in high-precision 0.6 V/1.2V reference voltage

±1.5% @VDD=2.5V~5.5V TA=25℃

±2% @VDD=2.5V~5.5V TA=-40℃~85℃

> Built-in WDT timer

> Built-in LCD1/2 All I/O ports of the Bias COM drive module

can be used as 1/2 Bias COM to output the COM port drive current

The built-in LED drive module can support up to 16 segments with 8 bits or 8 segments with 16 bits

The COM port has high current drive capability Up to 120mA

SEG port current can be flexibly configured to 2~30mA

> Built-in two USART communication modules support synchronous master-slave mode and asynchronous full-duplex mode

USART1 can be configured in RA0/RA1 or RC4/RC5 or RD1/RD2

> supports multiple oscillations mode

internal RC oscillation: design frequency 8MHz

external XT oscillation: up to 8MHz

> Package types: SOP16, SOP20, SOP28 and LQFP32