core

CPU: 1T8051, which is 10 times faster than the traditional 8051.

Compatible with 8051 instruction set and dual DPTR working mode.

storage

Flash: 18K bytes, supporting repeated erasing.

Flash can be divided into program space and data space. The data space can be used to store data that needs to be saved when power is off, and EEPROM can be omitted.

RAM:256 bytes of internal RAM and 1024 bytes of external ram.

operating voltage

Working voltage: 1.8-5.5V

Clock system

Built-in low-speed RC oscillator: 131KHz

Built-in high-speed RC oscillator: 16MHz with accuracy of 1% (3.3 V @ 25℃)

External RTC oscillator: 32.768KHz

RTC function

Built-in RTC module can count time, minutes, seconds, weeks and days, and support alarm clock function and millisecond and half-second interruption.

Interrupt system

15 active interrupt sources

Two-level interrupt priority supports interrupt nesting.

10 external interrupt sources, and any signal pin can be configured as interrupt input pin.

timer

Three 16-bit universal timers: Timer 0, Timer 1 and Timer 2.

General purpose input/output port (GPIO)

Supports up to 46 GPIO ports, and supports push-pull, open-drain, pull-up, pull-down and high-resistance modes.

The current of three GPIO devices reaches more than 10mA (Vol=GND+0.3V), which can be used to control the backlight of LCD.

One GPIO can be used as a remote control carrier driving port with a current of 400mA.

Analog/digital converter (ADC)

Supports 8-channel 12-bit ADC

Supports three reference sources: VDD, internal reference and external reference.

The VDD voltage can be measured when the internal voltage is selected as the reference voltage.

PWM

Supports 3-channel PWM, and the cycle and duty ratio can be configured arbitrarily within 16-bit range.

Support the function of directly outputting internal clock and remote control special frequency of 38KHz.

Support PWM interrupt

LCD driver

Support the built-in voltage charge pump mode, charge pump voltage division mode and resistance voltage division mode, and the built-in voltage charge pump mode can realize the boost function.

It can also support 5com x 31segm. and 4com x 32 segm.

Configurable duty ratio: 1/2, 1/3, 1/4, 1/5 Duty.

Low voltage detection (LVD)

Four trigger voltages of 2.0V, 2.7V, 3.7V and 4.4V can be configured.

Low voltage reset or interrupt can be set.

Reset mode

The chip supports a variety of reset sources: hard reset, soft reset, watchdog reset, low voltage detection reset and power-on/power-off reset.

watchdog

27-bit watchdog timer, 16-bit precision adjustment, configurable watchdog reset or interrupt.

Universal serial interface (UART1)

Support 1 UART interface

Support 1 byte receive cache

I2C interface

Built-in 1 I2C interface supports master-slave mode and standard/fast/high-speed mode.

Program download and simulation

Support ISP and IAP

Support online simulation function

low power consumption

STOP mode, current < 3uA

IDLE mode, current < 10uA

Low speed operation mode, current < 20uA.

Package type: LQFP48

For detailed information, please call 86）18823661714 (same as WeChat).