CMS80F231x series MCUs are enhanced 1T 8051 Flash MCUs, which support 48MHz peripheral operation at the fastest, 24MHz core operation, working voltage 2.1V-5.5V, up to 22 GPIOs, built-in 2 analog comparators, 1 channel programmable gain amplifier, Provide 6-channel enhanced PWM output, up to 22 channels of 12-bit ADC, 2 UART, 1 SPI, 1 I2C，I/O port can be mapped arbitrarily. Industrial standard design, can work at -40℃ to 105℃, and provide SOP16/ SOP20/SOP24 package.

> Enhanced 1T 8051

> Working voltage frequency: 2.1V-5.5V

> Working temperature: -40℃-105℃

> Built-in 16KB Flash ROM, 1KB Data Flash, 256B general RAM, 1KB general XRAM

> Support 4 different oscillation modes

> Up to 22 general-purpose GPIOs, all digital functions can be assigned to any GPIO

2 analog comparators

1 channel programmable gain amplifier

> up to 22 channels 12-bit ADC, built-in 1.2V reference voltage, reference voltage optional 1.2V/2.0V/2.4V/3.0V/VDD

> 5 16-bit timers

Built-in WUT timer

     Built-in LSE timer, support sleep wake-up function

> 4 UART serial ports, baud rate up to 1Mb/s

> 1 SPI, communication rate up to 6Mb/s

> 1 I2C, communication rate Up to 400Kb/s

> 6-channel enhanced EPWM, supporting independent/complementary/synchronous/group mode, complementary mode dead-zone delay function

> built-in low voltage reset function (LVR): 1.8V/2.0V/2.5V /3.5V

> Built-in low voltage detection function (LVD): 2.0V~4.6V 16 levels optional

> 96bit unique ID (UID)

> Package types: SOP16, SOP20,SOP24