kernel

CPU：1T 8051, 10 times faster than traditional 8051 with higher speed

Compatible with 8051 instruction set, dual DPTR working mode

memory

Flash: 16K bytes, supports multiple repeated erasures

15.5K program space, 512Byte data space available for storing power down data, saving EEPROM

RAM: 256 Byte internal RAM, 1024 Byte external RAM

Working Voltage

Working voltage: 2.0V~5.5V

Operating Temperature

Working temperature: -40 ℃~+105 ℃

clock system

External low-speed oscillator: 32.768KHz

Built in low-speed RC oscillator: 128KHz

Built in high-speed RC oscillator: 1MHz, accuracy of ± 1% @ 25 ℃ (factory calibrated)

PLL multiplier clock: 24MHz, accuracy of ± 1% 5V@25 ℃

timer

Three 16 bit universal timers: Timer 0, Timer 1, Timer 2

General Purpose Input/Output Port (GPIO)

Supports up to 26 GPIO ports,

Supports push-pull, open drain, pull-up, pull-down, and high impedance modes

IO current push 4 levels optional: 6mA, 10mA, 15mA, 20mA @ VDD=5V

Ordinary IO current level 2 optional: 18mA, 36mA @ VDD=5V

Support (LED0-LED8) 9 large current pins, with a higher capacity of up to 120mA@5V , can be used for high brightness LED screen display

TMC function

The clock source for TMC timer can be selected as IRCL or XOSCL

Minimum interruption time unit, 128 1/4 IRCL clock cycles or 128 XOSCL clock cycles

Configurable interrupt time ranges from 1-256 minimum unit times

Interrupt system

7 valid interrupt sources

Two level interrupt priority, supporting interrupt nesting

5 external interrupt sources INT0~INT4

External interrupt trigger edge selection: INT0~1 (rising edge, falling edge), INT2~4 (rising edge, falling edge, double edge)

Interrupt input pin selection: INT0 (P0.0), INT1 (P0.1), INT2 (P0.2), INT3 (P0.3), INT4 can choose any GPIO pin other than P0.0~P0.3 as the interrupt input pin

LED dot matrix (dual scan) control module

Built in LED dot matrix scanning module, supporting up to 8x9 pixels (LED0-LED8), LED driver with 8-level adjustable brightness

Analog to Digital Converter (ADC)

Supports 26 channels of 12 bit SAR ADC

Supports 3 types of reference voltage sources: VDD and internal reference, external reference

Selecting internal voltage as the reference, the internal channel can measure 1/4 VDD and can be used to measure the supply voltage

Touch Key

Built in touch sensing controller

Larger support for 26 touch channels, no need for external capacitors

High anti-interference performance, compliant with EMC (CS dynamic 10V, EFT 4KV) standards

Support touch interruption

Support low-power mode

16 bit PWM

Supports 6 PWM outputs, each can be individually controlled, and the cycle and duty cycle can be configured freely within the 16 bit range

Supports complementary mode and dead zone control, supports adjustable edge alignment and center alignment modes

Support direct output of internal clock function

Support PWM interrupt function

Each PWM output pin can be mapped to different GPIO pins

Universal Serial Interface (UART1/UART2)

Supports 2 full duplex serial ports

Support 1-byte receive cache

The TX/RX function of UART1/UART2 can be mapped to all other GPIO pins

I2C interface

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

The SCL/SDA function of I2C pin can be mapped to all other GPIO pins

SPI interface

Built in 1 4-wire SPI interface, supporting master-slave mode

Low Voltage Detection (LVD)

The detection voltage can be set to 2.2V, 2.5V, 2.7V, 3.0V, 3.3V, 3.6V, 3.9V, and 4.2V.

Low voltage reset or interrupt can be set

Reset mode

The chip supports multiple reset sources: power on/off reset, soft reset, watchdog reset, low voltage detection reset

watchdog

27 bit watchdog timer, 16 bit adjustment accuracy, configurable watchdog reset or interrupt

Program download and simulation

Support ISP and IAP

Support online simulation function

low power consumption

STOP mode, current<7uA

IDLE mode, current<30uA

Low speed operation mode, current<12uA

Encapsulation type: SOP28

CA51F652S6B pin diagram