C8051F960-A-GM Equivalent & Substitute Parts

Part Overview

The C8051F960-A-GM is an 8-bit microcontroller from Silicon Labs' C8051F9xx series, featuring a 25MHz 8051 core with 128KB FLASH memory and 57 I/O pins in a 76-DQFN package. This part is classified as Obsolete, making identification of compatible substitutes essential for ongoing system support and new production alternatives.

Substiute Parts

C8051F960-A-GM

Silicon LabsIn Stock: 1502C8051F960-A-GM Datasheet

Current PartRFQ

C8051F960-B-GM

Silicon LabsIn Stock: 3026C8051F960-B-GM Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The C8051F960-B-GM qualifies as a direct substitute for the C8051F960-A-GM based on identical electrical and mechanical specifications. Substitution eligibility is determined by the following critical parameters:

• Core Architecture: Both parts use the 8051 core processor at 8-bit configuration
• Memory Configuration: Identical 128KB FLASH and 8.25K x 8 RAM
• Clock Speed: Both operate at 25MHz
• I/O Count: Both provide 57 I/O pins
• Voltage Range: Both support 1.8V ~ 3.8V supply
• Peripheral Set: Identical connectivity (I2C, SPI, UART/USART) and peripherals (DMA, LCD, POR, PWM, WDT)
• Package: Both use 76-DQFN (6x6) surface mount package
• Temperature Range: Both rated -40°C ~ 85°C

Parameter Comparison

Engineering Selection Recommendations

The C8051F960-B-GM is a functionally equivalent substitute for the C8051F960-A-GM. Both parts share identical electrical specifications, memory configuration, I/O architecture, and package form factor. The primary distinction is product lifecycle status: the A-variant is Obsolete, while the B-variant is designated Not For New Designs.

For applications currently using the C8051F960-A-GM, the C8051F960-B-GM provides pin-for-pin and functional compatibility without design modifications. The B-variant carries ROHS3 compliance certification, which may be required for certain regulatory or procurement requirements.

Frequently Asked Questions (FAQ)

Q: Can C8051F960-B-GM replace C8051F960-A-GM in existing designs?

A: Yes. Both parts are electrically and mechanically identical. No PCB layout or firmware changes are required for substitution.

Q: What is the difference between the A and B variants?

A: The variants differ only in product lifecycle status and compliance certifications. The B-variant is ROHS3 compliant, while the A-variant status is not specified. Electrical and functional specifications are identical.

Q: Are there any package differences between these parts?

A: No. Both use the 76-DQFN (6x6) surface mount package with identical pinout and exposed pad configuration.

Q: What is the significance of the Obsolete status for the A-variant?

A: Obsolete status indicates the part is no longer manufactured or supported by Silicon Labs. The B-variant should be used for new production and ongoing support.

Q: Do these parts require different handling or storage procedures?

A: Both parts have identical Moisture Sensitivity Level (MSL 3, 168 Hours). Standard handling and storage procedures apply equally to both variants.

Q: Are firmware or software changes needed when switching from A to B variant?

A: No. Identical core architecture, memory configuration, and peripheral set ensure complete software compatibility.