C8051F330 Equivalent & Substitute Parts

Part Overview

The C8051F330 is an 8-bit microcontroller from Silicon Labs' C8051F33x series, featuring a 25MHz 8051 core with 8KB Flash program memory, 768 bytes of RAM, and integrated peripherals including SMBus, SPI, and UART connectivity. The device is classified as Obsolete, making identification of functionally equivalent alternatives essential for ongoing system support, redesigns, and production continuity.

Substiute Parts

C8051F330

Silicon LabsIn Stock: 2656C8051F330 Datasheet

Current PartRFQ

C8051F330-GM

Silicon LabsIn Stock: 1315C8051F330-GM Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the C8051F330 is determined by strict equivalence across the following critical parameters:

• Core Architecture: 8051-based processor
• Memory Configuration: 8KB Flash program memory, 768 bytes RAM
• Operating Frequency: 25MHz maximum clock speed
• Voltage Range: 2.7V to 3.6V supply compatibility
• Peripheral Set: SMBus/I2C, SPI, UART/USART, PWM, temperature sensor, watchdog timer
• I/O Count: 17 I/O pins minimum
• Data Conversion: 16-channel 10-bit ADC, 1-channel 10-bit DAC
• Package Compatibility: 20-pin MLP (4x4mm) form factor

The C8051F330-GM variant meets all electrical and mechanical substitution criteria as a direct manufacturer equivalent, differing only in packaging format (Tube vs. standard) and product lifecycle status.

Parameter Comparison

Engineering Selection Recommendations

The C8051F330-GM is a direct functional equivalent to the C8051F330, with identical electrical specifications and pinout. Selection between these variants is determined by product lifecycle and regulatory compliance requirements:

C8051F330-GM is the preferred choice for new applications and ongoing production due to ROHS3 compliance and "Not For New Designs" status, which indicates broader availability and manufacturer support compared to the fully Obsolete C8051F330.

C8051F330 remains suitable for legacy system maintenance and repair where existing inventory is available, though procurement may be limited due to Obsolete classification.

Both variants share identical core functionality, memory configuration, peripheral set, and package specifications, ensuring direct interchangeability at the circuit level.

Frequently Asked Questions (FAQ)

Q: Can C8051F330-GM replace C8051F330 in existing designs?

A: Yes. Both parts are electrically and mechanically identical. The C8051F330-GM differs only in packaging format (Tube) and product lifecycle status. No circuit modifications are required.

Q: What is the difference between the two part numbers?

A: The C8051F330-GM is a manufacturer variant of the C8051F330 with identical specifications. The "-GM" suffix indicates a specific packaging and distribution format. Both share the same core processor, memory, peripherals, and pinout.

Q: Are there RoHS compliance differences?

A: Yes. The C8051F330-GM is ROHS3 compliant, while the C8051F330 is RoHS non-compliant. For applications requiring RoHS certification, the C8051F330-GM is the appropriate selection.

Q: What is the pin count and package footprint?

A: Both variants use a 20-pin MLP (4x4mm) package with 20-VFQFN Exposed Pad configuration. The physical footprint and pinout are identical.

Q: Can these parts operate at different voltage levels?

A: No. Both C8051F330 and C8051F330-GM operate within the same voltage supply range of 2.7V to 3.6V. No voltage-level variants exist between these part numbers.

Q: What is the maximum operating frequency?

A: Both variants operate at a maximum clock speed of 25MHz with an internal oscillator.

Q: Are the memory specifications identical?

A: Yes. Both parts feature 8KB Flash program memory, 768 bytes of RAM, and identical data converter configurations (16-channel 10-bit ADC, 1-channel 10-bit DAC).