C8051F321-GMR Silicon Labs C8051F321-GMR is an 8-bit microcontroller based on 8051 core, featuring 16KB Flash, 2.25KB RAM, up to 25 MIPS throughput, USB 2.0 connectivity, and a 10-bit ADC.
Mfr Part #:

C8051F321-GMR

Available from 3 distributors
Mfr Name: Silicon Labs
Silicon Labs
Silicon Labs C8051F321-GMR is an 8-bit microcontroller based on 8051 core, featuring 16KB Flash, 2.25KB RAM, up to 25 MIPS throughput, USB 2.0 connectivity, and a 10-bit ADC.
✓ Total Stock: 11,545 pcs

C8051F321-GMR Available from 3 distributors

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C8051F321-GMR Specifications Quick View

Most important parameters for selection – full specs in datasheet.
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C8051F321-GMR Description

Short technical summary and product information.

The Silicon Labs C8051F321-GMR is an 8-bit microcontroller from the C8051F32x family, built around a high-speed pipelined 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, which includes a 1 KB USB FIFO buffer.

 

This MCU integrates a full-speed USB 2.0 controller supporting both 12 Mbps and 1.5 Mbps operation, with an internal oscillator that achieves 0.25% accuracy when clock recovery is enabled. A 10-bit ADC with up to 200 ksps sampling rate provides up to 13 external single-ended or differential inputs, along with an internal temperature sensor.

 

Connectivity options include SMBus (I2C), SPI, enhanced UART, and USB. Peripheral features include four 16-bit timers, a programmable counter array (PCA) with five capture/compare modules, PWM, brown-out detect, power-on reset, and a watchdog timer. The device operates from a 2.7V to 3.6V supply and can tolerate an input voltage of 4.0V to 5.25V on the voltage regulator input.

 

The C8051F321-GMR is supplied in a 28-pin MLP (5x5 mm) package with an exposed pad for thermal management, rated for surface mount assembly. It operates over the industrial temperature range of -40°C to 85°C. The component is RoHS compliant and lead-free, packaged in tape and reel with a standard quantity of 1500 units.

C8051F321-GMR Quick Information

Product Type: Microcontroller
Series: C8051F32x
Canonical Name: Silicon Labs C8051F321-GMR 8-bit Microcontroller
Subcategory: 8-bit Microcontrollers

C8051F321-GMR Compliance

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

C8051F321-GMR Features

  • 8-bit 8051 core with 25 MIPS throughput.
  • 16 KB Flash and 2.25 KB internal RAM.
  • Integrated USB 2.0 full/low speed controller.
  • 10-bit ADC with up to 200 ksps sampling rate.
  • Wide operating temperature range -40°C to 85°C.

C8051F321-GMR Applications

  • Embedded control and data acquisition systems.
  • USB-enabled peripheral and interface designs.
  • Industrial automation and sensor monitoring.
  • Portable and battery-powered instruments.

C8051F321-GMR FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of the C8051F321-GMR?

The supply voltage range is 2.7V to 3.6V, with a voltage regulator input of 4.0V to 5.25V.

What package is the C8051F321-GMR available in?

It comes in a 28-pin MLP (5x5 mm) surface mount package with exposed pad (28-VFQFN Exposed Pad).

What is the operating temperature range?

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

Is the C8051F321-GMR RoHS compliant?

The component is marked as RoHS3 compliant and lead-free, but this status is unverified. Refer to the manufacturer for official certification.

What is the maximum clock speed?

The maximum clock speed is 25 MHz, yielding up to 25 MIPS throughput.

How much Flash memory does it have?

It has 16 KB of Flash memory, organized as 16K x 8, in-system programmable in 512-byte sectors.

Does it have USB connectivity?

Yes, it includes a USB 2.0 compliant controller supporting full speed (12 Mbps) and low speed (1.5 Mbps) operation with integrated clock recovery.

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