CH552G 8-bit enhanced USB microcontroller ADC analog-to-digital conversion touch 24MHz main frequency 16KIC memory

The CH552 chip is an enhanced E8051 core microcontroller compatible with the MCS51 instruction set, with 79% of its instructions being single byte single cycle
The average instruction speed is 8-15 times faster than the standard MCS51.
CH552 supports a maximum system frequency of 24MHz, with built-in 16K program memory ROM and 256 bytes of internal iRAM, as well as 1K bytes
On chip xRAM supports DMA direct memory access.
CH552 has built-in ADC analog-to-digital conversion, touch button capacitance detection, 3 sets of timers and signal capture and PWM, dual asynchronous serial port
Functional modules such as SPI, USB device controller, and full speed transceiver.
CH551 is a simplified version of CH552, with a program memory ROM of 10K, on-chip xRAM of 512 bytes, and asynchronous serial port only UART0,
The packaging form is only SOP16, the touch button has only 4 channels, and the ADC analog-to-digital conversion module and USB type-C module have been removed. Other components are
CH552 is the same, you can directly refer to the CH552 manual and materials

Core: Enhanced E8051 core, compatible with MCS51 instruction set, with 79% of instructions being single byte single cycle instructions and an average instruction count
The speed is 8-15 times faster than the standard MCS51, with unique XRAM data fast copy instructions and dual DPTR pointers.

ROM: A 16KB capacity programmable non-volatile memory ROM that can be used entirely for program storage space; Alternatively, it can be divided into
For a 14KB program storage area and a 2KB boot code BootLoader/ISP program area.
DataMlash: A 128 byte non-volatile data storage that can be repeatedly erased and written, supporting rewriting data in bytes.
RAM: 256 bytes internal iRAM, which can be used for fast data temporary storage and stacking; 1KB on-chip xRAM, can be used for a large number of data
According to temporary storage and DMA direct memory access.
USB: Embedded USB controller and USB transceiver, supports USB Device device mode, supports USB Type-C master-slave detection,
Supports USB 2.0 full speed 12Mbps or low-speed 1.5Mbps. Supports up to 64 byte data packets, built-in FIFO, and supports DMA.
Timer: 3 sets of timers, T0/T1/T2 are standard MCS51 timers.
Capture: Timer T2 has been extended to support 2-channel signal capture.
PWM: 2 sets of PWM outputs, with PWM1/PWM2 being 2 channels of 8-bit PWM outputs.
UART: 2 sets of asynchronous serial ports, all supporting higher communication baud rates, with UART0 being the standard MCS51 serial port.
SPI: The SPI controller has a built-in FIFO, and the clock frequency can reach up to half of the system's main frequency Fsys. It supports serial data input and output
Simplex reuse, supporting Master/Slave master-slave mode.
ADC: 4-channel 8-bit A/D analog-to-digital converter, supporting voltage comparison.
Touch Key: 6-channel capacitance detection, supports up to 15 touch buttons, and supports independent timed interrupts.
GPIO: Supports up to 17 GPIO pins (including XI/XO, RST, and USB signal pins).
Interrupt: Supports 14 sets of interrupt signal sources, including 6 sets of interrupts (INT0, T0, INT1, T1) compatible with standard MCS51
UART0、T2)， And 8 sets of extended interrupts (SPI0, TKEY, USB, ADC, UART1, PWMX, GPIO, WDOG), which
The GPIO interrupt can be selected from 7 pins.
Watch Dog: 8-bit preset watchdog timer WDOG, supports timed interrupts.
Reset: Supports 4 types of reset signal sources, built-in power on reset, software reset and watchdog overflow reset, optional pin external
Reset the input.
Clock: Built in 24MHz clock source, can support external crystals by reusing GPIO pins.
L Power: Built in low voltage difference regulator from 5V to 3.3V, supporting 5V or 3.3V or even 2.8V power supply voltage. Support low power
Sleep consuming, supports USB, UART0, UART1, SPI0, and some GPIO external wake-up.
The chip has a unique ID number built-in.

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