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C8051F321-GM The C8051F321-GM is an 8-bit 8051 microcontroller from Silicon Labs with 16KB Flash memory, 25MHz maximum speed, and USB 2.0 connectivity. It features 21 I/O pins, 2.25KB RAM, and a 13-channel 10-bit ADC.
Mfr Part #:

C8051F321-GM

Available from 3 distributors
Mfr Name: Silicon Labs
Silicon Labs
The C8051F321-GM is an 8-bit 8051 microcontroller from Silicon Labs with 16KB Flash memory, 25MHz maximum speed, and USB 2.0 connectivity. It features 21 I/O pins, 2.25KB RAM, and a 13-channel 10-bit ADC.
✓ Total Stock: 2,318 pcs

C8051F321-GM Available from 3 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Xingangxin ✓
Non-Authorised Inventory information
2,180 pcs
On Request
2180 pcs On Request 1 On Request On Request On Request On Request On Request
Partservice ✓
Non-Authorised Inventory information
120 pcs
On Request
120 pcs On Request 1 On Request On Request On Request On Request On Request
Risen Electronics ✓
Non-Authorised Inventory information
18 pcs
On Request
18 pcs On Request 1 On Request On Request On Request On Request 2026-02-23 21:33:16
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.

C8051F321-GM Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Connectivity
Core Processor
Core Size
Data Converters
Mounting Type
Number of I
Operating Temperature
Oscillator Type
Peripherals
Program Memory Size
Program Memory Type
RAM Size
Speed
Supplier Device Package
Voltage
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C8051F321-GM Description

Short technical summary and product information.

The C8051F321-GM is an 8-bit microcontroller from Silicon Laboratories based on the high-speed 8051 core. It operates at up to 25 MHz delivering 25 MIPS throughput. The device includes 16 KB of in-system programmable Flash memory and 2.25 KB of internal RAM.

 

Connectivity options include SMBus (I2C), SPI, UART/USART, and a USB 2.0 controller supporting full speed (12 Mbps) and low speed (1.5 Mbps) operation. An integrated clock recovery circuit enables USB operation without an external crystal. The MCU also features a 13-channel 10-bit ADC with up to 200 ksps sampling rate, along with peripherals such as brown-out detect, POR, PWM, temperature sensor, and watchdog timer.

 

The C8051F321-GM is supplied in a 28-VFQFN exposed pad package (28-MLP 5x5 mm) for surface mount assembly. It operates from a 2.7V to 3.6V supply and over a -40°C to +85°C temperature range.

C8051F321-GM Quick Information

Product Type: Microcontroller
Canonical Name: C8051F321-GM 8-bit Microcontroller
Subcategory: 8-bit Microcontrollers

C8051F321-GM Compliance

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

C8051F321-GM Features

  • 8-bit 8051 core with 25 MIPS throughput.
  • 16 KB in-system programmable Flash memory.
  • USB 2.0 controller with integrated clock recovery.
  • 13-channel 10-bit ADC sampling at 200 ksps.
  • Operates from 2.7V to 3.6V supply.

C8051F321-GM Applications

  • Embedded control with USB connectivity.
  • Industrial sensor and data acquisition systems.
  • Portable and battery-powered instruments.
  • Human interface devices and USB peripherals.

C8051F321-GM FAQs

7 frequently asked questions generated from this part’s specifications.
What is the core processor of the C8051F321-GM?

The C8051F321-GM uses an 8051 core processor.

What is the maximum clock speed of this microcontroller?

The maximum clock speed is 25 MHz.

How much Flash memory does the C8051F321-GM have?

It has 16 KB (16K x 8) of Flash program memory.

What is the operating temperature range?

The operating temperature range is -40°C to +85°C.

What package type is the C8051F321-GM available in?

It is available in a 28-VFQFN Exposed Pad package (28-MLP 5x5 mm) for surface mount.

Does the C8051F321-GM support USB?

Yes, it has a USB 2.0 controller supporting full speed (12 Mbps) and low speed (1.5 Mbps).

What is the supply voltage range for this device?

The supply voltage range is 2.7V to 3.6V.

C8051F321-GM Alternate Parts

Same form/fit/function or matching attribute configuration across different manufacturers.
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C8051F321R
C8051F321R
Silicon Labs
IC MCU 8BIT 16KB FLASH 28MLP
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