The main frequency is up to 48MHz; the working voltage is 2.1V to 3.6V; it provides 32K Flash Memory, 1K Data Flash, 4K XRAM; built-in multi-channel 12-bit SAR ADC, up to 285K oversampling function; supports 4 low-offset operational amplifiers; Support 1 PGA; support 2 6bit DAC; support 2 low offset comparators; support 6 channels of flexibly configurable PWM; support 2 UARTs, 1 SPI, 1 I2C; support 5 timers; industrial standard designed to work at -40°C to 105°C; SSOP24 package is provided.> 8051 core > Working voltage: 2.1V-3.6V@48Mhz > Working temperature: -40℃-105℃ > 32KB Flash ROM > 256 Bytes General RAM > 4KB XRAM > 1KB DATA FLASH > 5 16-bit general timers > 6 Channel enhanced PWM module > Built-in buzzer driver > Built-in multi-channel 12-bit ADC, sampling rate: 285Ksps > Built-in 4 low-offset operational amplifiers > Built-in 2 6-bit DACs > Built-in 1 PGA > Built-in 2 lows Offset comparator > 2 UART interfaces, 1 I2C interface, 1 SPI interface > 22 general-purpose GPIO > Package type: SSOP24