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CH551G The WCH CH551G is a low-cost 8051 core microcontroller with an integrated USB transceiver. It offers a 24MHz clock speed and comes in a convenient SOP16 package.
Mfr Part #:

CH551G

Available from 1 distributors
Mfr Name: WCH
WCH
The WCH CH551G is a low-cost 8051 core microcontroller with an integrated USB transceiver. It offers a 24MHz clock speed and comes in a convenient SOP16 package.
✓ Total Stock: 1,813 pcs
$ Price Range: $2.50

CH551G Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Optech Co.,Limited ✓
Non-Authorised Inventory information
1,813 pcs
On Request
1813 pcs On Request 1 On Request On Request 22+ On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

CH551G Specifications Quick View

Most important parameters for selection – full specs in datasheet.
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CH551G Description

Short technical summary and product information.

The WCH CH551G is an enhanced 8051 core microcontroller designed for cost-effective embedded applications. It features a 24MHz clock speed, providing significantly faster instruction execution compared to standard MCS51 architectures. The chip includes 10KB of ROM, 768B of RAM, and 128B of FLASH memory.

 

Key peripherals include 2 PWM channels, 4 capacitive touch channels, 1 high-speed UART, 1 SPI interface (Master/Slave), 2 external interrupts, and 3 timers. A notable feature is the integrated USB transceiver, supporting slave mode with speeds up to 12Mbit/s, making it suitable for USB-enabled projects.

 

Packaged in a user-friendly SOP16 format, the CH551G is well-suited for small-scale projects and applications where hand-soldering is preferred. The device is part of the CH55x series from WCH, known for its affordable 8-bit microcontrollers with USB interfaces. While the ADC is disabled in this specific variant, the CH551G offers a robust set of features for general-purpose embedded control.

 

This microcontroller is compatible with the MCS51 instruction set, with a high percentage of single-byte, single-cycle instructions. Its design facilitates easier integration into various electronic circuits and systems requiring a compact and capable MCU.

CH551G Quick Information

Product Type: Microcontroller
Series: CH551
Canonical Name: WCH CH551G Microcontroller
Subcategory: MCU with USB Controller

CH551G Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

CH551G Estimated Pricing

Qty Low High
1+ $2.50 $2.50

Estimated market price range - modelled values for guidance only, not live distributor offers.

CH551G Features

  • Enhanced 8051 core microcontroller
  • Integrated USB transceiver
  • 24MHz clock speed
  • SOP16 package for easy soldering
  • Rich peripheral set including PWM and touch

CH551G Applications

  • USB interface projects
  • Embedded control systems
  • Prototyping and small-scale designs
  • Cost-sensitive applications

CH551G FAQs

6 frequently asked questions generated from this part’s specifications.
What is the core architecture of the CH551G microcontroller?

The CH551G features an enhanced 8051 core architecture.

What is the maximum clock speed for the CH551G?

The CH551G operates at a maximum clock speed of 24MHz.

How much ROM and RAM does the CH551G have?

The CH551G has 10KB of ROM and 768B of RAM.

What package type is the CH551G available in?

The CH551G is available in a SOP16 package.

Does the CH551G have a USB interface?

Yes, the CH551G has an integrated USB transceiver supporting slave mode up to 12Mbit/s.

How many PWM channels are available on the CH551G?

The CH551G offers 2 PWM channels.

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