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HomeProductsIntegrated Circuits (ICs)Interface - ControllersCP2101-GMR
CP2101-GMR Image
Image may be representation.
See specifications for product details.

CP2101-GMR - Silicon Labs

Manufacturer Part Number
Energy Micro (Silicon Labs)
Allelco Part Number
ECAD Model
Parts Description
Detailed Description
28-VFQFN Exposed Pad
Data sheet
Cylindrical Battery Holders.pdf
RoHs Status
RoHS Compliant
In stock: 3942

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CP2101-GMR Tech Specifications
Silicon Labs - CP2101-GMR technical specifications, attributes, parameters and parts with similar specifications to Silicon Labs - CP2101-GMR

Product Attribute Attribute Value  
Manufacturer Energy Micro (Silicon Labs)  
Voltage - Supply 3V ~ 3.6V  
Supplier Device Package 28-QFN (5x5)  
Standards USB 2.0  
Series -  
Protocol USB  
Package / Case 28-VFQFN Exposed Pad  
Product Attribute Attribute Value  
Package Tape & Reel (TR)  
Operating Temperature -40°C ~ 85°C  
Interface UART  
Function Bridge, USB to UART  
Current - Supply 22mA  
Base Product Number CP2101  

Parts Introduction

Manufacturer Part Number



Silicon Labs


The CP2101-GMR is a USB to UART bridge controller integrating a USB 2.0 full-speed function controller, USB transceiver, oscillator, EEPROM, and asynchronous serial data bus (UART) all in one solution.

Product Features and Performance

USB 2.0 full-speed compatible interface

UART interface support for 7 or 8 data bits, 1 or 2 stop bits and odd / even / mark / space / no parity

In-built EEPROM for device ID and configuration storage

Integrated clock circuit that requires no external crystal reduces BOM costs

Supports baud rates up to 1 Mbps

Asynchronous serial data bus (UART) supports full handshaking & modem interface signals

USB suspend states supported via SUSPEND pins

Enhanced electrostatic discharge (ESD) protection

Product Advantages

Reduced external components with integrated oscillator and EEPROM

Royalty-free Virtual COM port drivers for ease of software integration

High data bandwidth capability

Low operating current (~22mA)

Industrial temperature range from -40°C to +85°C

Key Technical Parameters

USB Protocol: USB 2.0

Function: Bridge, USB to UART

Interface: UART

Voltage - Supply: 3V ~ 3.6V

Current - Supply: 22mA

Operating Temperature: -40°C ~ 85°C

Packaging: 28-VFQFN Exposed Pad

Quality and Safety Features

Built-in voltage regulator for reliable operation

Support for USB suspend condition for reduced power consumption

Extensive product and certification testing for robust operation


Compatible with USB 2.0 full-speed

Interfacing with microcontrollers through UART with minimal interfacing hardware

Application Areas

PC peripherals

USB to serial adapters

Industrial control

Medical equipment

Vehicle diagnostics

Point-of-sale terminals

Product Lifecycle

Not For New Designs (current product phase)

Potential for future discontinuation with recommendations for migration to newer generations

Several Key Reasons to Choose This Product

High integration reduces system complexity and board space requirements

No firmware development required, speeding up time to market

Direct access driver support for easy implementation

Robust operation over industrial temperature range making it suitable for harsh environments

Support for multiple operating systems

Silicon Labs’ reputation for high-quality and reliable interface solutions

Parts with Similar Specifications

The three parts on the right have similar specifications to Silicon Labs CP2101-GMR

Product Attribute CP2101-GMR CP2102-GMR CP2102-GM CP2102N-A01-GQFN24
Part Number CP2101-GMR CP2102-GMR CP2102-GM CP2102N-A01-GQFN24
Manufacturer Silicon Labs Silicon Labs Silicon Labs Silicon Labs
Operating Temperature -40°C ~ 85°C -40°C ~ 85°C -40°C ~ 85°C -40°C ~ 85°C
Series - - - USBXpress™
Supplier Device Package 28-QFN (5x5) 28-QFN (5x5) 28-QFN (5x5) 24-QFN (4x4)
Package Tape & Reel (TR) Tape & Reel (TR) Tube Tube
Base Product Number CP2101 CP2102 CP2102 -
Function Bridge, USB to UART Bridge, USB to UART Bridge, USB to UART Bridge, USB to UART
Standards USB 2.0 USB 2.0 USB 2.0 USB 2.0
Package / Case 28-VFQFN Exposed Pad 28-VFQFN Exposed Pad 28-VFQFN Exposed Pad 24-WFQFN Exposed Pad
Current - Supply 22mA 20mA 20mA 9.5mA
Voltage - Supply 3V ~ 3.6V 3V ~ 3.6V 3V ~ 3.6V 3V ~ 3.6V

CP2101-GMR Datasheet PDF

Download CP2101-GMR pdf datasheets and Silicon Labs documentation for CP2101-GMR - Silicon Labs.

Cylindrical Battery Holders.pdf
PCN Packaging
Labeling Change 14/Dec/2021.pdf Mult Dev Label Chgs 20/Oct/2021.pdf
PCN Assembly/Origin
Site Change 18/Jan/2022.pdf


Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.

Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.

Your Faithful Supply Chain Partner -

Contact us if you have any questions.

  1. Phone
    +00852 9146 4856

Certifications & Memberships

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CP2101-GMR Image


Silicon Labs

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