This is the CH552G USB Microcontroller manufactured by Nanjing Qinheng Microelectronics Co., Ltd. (WCH)

This MCU is very similar to CH552T already listed here This version of the CH552 MCU comes in a SOIC-16 package making in it easier to solder, and a lower price trading off against slightly less available IO pins.

- Overview

CH552G is a MCS51 compatible E8051 core microcontroller, 79% instructions of CH552 is single-byte or single cycle, and average instruction speed is 8 to 15 times faster than the standard MCS51. CH552 supports up to 24MHz system clock speed, built-in 16K ROM, 256 bytes iRAM and 1K xRAM, and xRAM support DMA direct memory access. CH552built-in capacitive detection module,3* timer and PWM, 2UART, SPI, USB device controller and full-speed transceiver, USB type-C module.

- Features

• Enhanced E8051 core CPU, 8-15 times faster than the standard MCS51;
• Built-in 16KB Code Flash, 1KB XRAM, 256B iRAM, 128B DataFlash, support byte read and write;
• Built-in BootLoader, support USB and UART ISP, provide ISP download library;
• Built-in USB controller and USB transceiver, support USB-Device mode, support USB type-C master and slave detection, support USB 2.0 full speed 12Mbps or low-speed 1.5Mbps. Support up to 64 bytes of data packets, built-in FIFO, support DMA;
• Built-in USB controller and USB transceiver, support USB2.0 full speed and low-speed host or device mode. Support up to 64 bytes of data packets, built-in FIFO, support for DMA;
• 3 timer / counter, support 2-channel capture and 2 PWM;
• Provide two full-duplex UART, all support high baud rate communication, UART0 is a standard MCS51 serial port;
• Provides SPI communication interface, built-in FIFO, support Master / Slave mode;
• Provides 4-channel 8-bit A / D converters;
• Supports 6-channel capacitance detection;
• Supports four reset signal sources, built-in power-on reset, support software and watchdog time-out reset, selectable pin external reset;
• Built-in 24MHz clock source and PLL;
• Built-in unique ID number;

- Package:

SOIC-16

I am personally looking to use this IC in an Upcoming device which will be listed here in the future but I have been frustrated with the supply chain and have decided to list it here for everyone to purchase.