core

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

Compatible with 8051 instruction set and dual DPTR working mode.

storage

Flash: 16K bytes, supporting repeated erasing.

Flash can be divided into program space and data space, and the function of data space is similar to EEPROM, which is used to store the data that needs to be saved after power failure.

RAM:256 bytes of internal ram

Operating voltage

When the CPU clock is 8MHz, the working voltage range is 2.2 ~ 5.5V

When the CPU clock is 16MHz, the working voltage range is 2.7 ~ 5.5V

Clock system

Built-in low-speed RC oscillator: 100KHz, accuracy 25%

Built-in high-speed RC oscillator: 16MHz with accuracy of 1.5%

TMC function

The clock source is a built-in low-speed RC oscillator, and the minimum interruption time is 512 clock cycles of the low-speed RC oscillator.

The configurable interruption time is 1-256 minimum unit times.

Interrupt system

7 valid interrupt sources

Two-level interrupt priority supports interrupt nesting.

2 external interrupt sources

Timer

Two 16-bit universal timers: Timer 0 and Timer 1.

General purpose input/output port (GPIO)

Supports up to 6 GPIO ports, and supports push-pull, open-drain, pull-up, pull-down and high-resistance modes.

Analog/digital converter (ADC)

Support 6-channel 12-bit SAR ADC

Supports two voltage references: VDD and internal reference (1.5V).

Selecting internal voltage as reference can directly measure VDD voltage.

Touch Key

Built-in touch sensing controller

Internal charging and internal reference can be set.

Larger support for 5 touch channels

Built-in touch frequency hopping function can significantly improve the voltage pulse injection (CS) resistance.

High anti-interference performance, in line with EMC(CS) standards.

Support touch power saving mode

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.

Low voltage detection (LVD)

The detection voltage can be set to 2.2V, 2.7V, 3.7V and 4.2v..

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 (UART)

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 < 5uA

IDLE mode, current < 20uA

Low speed operation mode, current < 40uA.

Package type: SOP8

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