What is a cross-reference page for C8051F040-GQ?
This page groups mapped replacement options for C8051F040-GQ so buyers and engineers can compare alternatives before requesting a quote or approving a substitute.
Alternative part analysis
C8051F040-GQ replacements, alternatives, and cross reference
Compare mapped replacement and alternative options for C8051F040-GQ, then verify package, specifications, and application fit before approval.
Compare C8051F040-GQ against mapped replacement options
Review package, lifecycle, stock, and MOQ in one view
Move from engineering screening to RFQ without leaving the page
No mapped replacement parts yet
This product currently does not show a published cross-reference list. Use RFQ support if your team needs an alternative part review.
Specification view
Parameter Comparison Chart
A side-by-side view of the source part and its mapped alternatives so buyers and engineers can screen package, availability, lifecycle, and key descriptors before RFQ.
swipe Swipe or scroll horizontally to compare more part numbers
The left column stays visible so buyers can keep the spec label in view while scanning multiple alternatives.
| Parameter Comparison Chart | Current part C8051F040-GQ Silicon Labs |
|---|---|
| Part Number | C8051F040-GQ |
| Manufacturer | Silicon Labs |
| Category | Integrated Circuits (ICs) |
| Subcategory | Embedded - Microcontrollers |
| Package | TQFP |
| Series | C8051F04x |
| Key Attributes | - |
| Description | IC MCU 8BIT 64KB FLASH 100TQFP |
| Lifecycle | - |
| Stock | 68,469 |
| Available | 69,556 |
| Min Order | 1 |
| Datasheet | Available |
| Oscillator Type | Internal |
| Core Size | 8-Bit |
| Core Architecture | 8051 |
| Memory Size | 64kB |
| Program Memory Size | 64KB 64K x 8 |
| Density | 512 kb |
| Program Memory Type | FLASH |
| Data Bus Width | 8b |
| Watchdog Timer | Yes |
| Number of SPI Channels | 1 |
| Number of Timers/Counters | 5 |
| Number of UART Channels | 2 |
| Number of Channels | 6 |
| Voltage - Supply (Vcc/Vdd) | 2.7V~3.6V |
| Number of PWM Channels | 6 |
| Core Processor | 8051 |
| Peripherals | Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT |
| RAM Size | 4.25K x 8 |
| Access Time | 25 μs |
| Number of Programmable I/O | 64 |
| Max Frequency | 25MHz |
| Speed | 25MHz |
| Connectivity | CANbus, EBI/EMI, SMBus (2-Wire/I2C), SPI, UART/USART |
| Data Converter | A/D 8x8b, 13x12b; D/A 2x10b, 2x12b |
| Packaging | Tray |
| ECCN | EAR99 |
| Lead Free | Lead Free |
| Mounting Type | Surface Mount |
| Min Operating Temperature | -40°C |
| Factory Lead Time | 6 Weeks |
| Published | 2000 |
| Max Operating Temperature | 85°C |
| Categories | Integrated Circuits (ICs) |
| Lead Pitch | 500μm |
| Operating Temperature | -40°C~85°C TA |
| Sub-Categories | Embedded - Microcontrollers |
| Height | 1.05mm |
| Part Status | Not For New Designs |
| Package / Case | 100-TQFP |
| Min Supply Voltage | 2.7V |
| Contact Plating | Tin |
| Radiation Hardening | No |
| Number of Bits | 8 |
| Number of ADC Channels | 8 |
| Mount | Surface Mount |
| Operating Supply Voltage | 3V |
| Frequency | 25MHz |
| Max Supply Voltage | 3.6V |
| Number of Pins | 100 |
| Width | 14mm |
| Length | 14mm |
| Memory Type | FLASH |
| Manufacturer | Silicon Labs |
| Number of I/O | 64 |
| Row Spacing | 16 mm |
| Interface | 2-Wire, CAN, EBI/EMI, I2C, SMBus, SPI, UART, USART |
| Base Part Number | C8051F04 |
| Series | C8051F04x |
| Manufacturer's Part No. | C8051F040-GQ |
| Supplier Device Package | 100-TQFP (14x14) |
| RoHS Status | RoHS Compliant |
| REACH SVHC | No SVHC |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) |
| HTSUS | 8542.31.0001 |
| Actions |
Cross-reference FAQ
Replacement Part Questions
Short answers for teams reviewing C8051F040-GQ replacement and equivalent-part options.
Does a mapped alternative mean a guaranteed drop-in replacement for C8051F040-GQ?
Not automatically. Cross-reference mapping helps shortlist candidates, but package, electrical behavior, qualification scope, and approval rules still need to be checked before release.
Which parameters should teams compare first for C8051F040-GQ alternatives?
Start with package, series, key attributes, lifecycle status, stock position, datasheet access, and the mapped pin-to-pin or cross-reference note. Then confirm application-specific requirements in the datasheet and RFQ stage.
Can I request a quote for an alternative to C8051F040-GQ?
Yes. Use the product links or RFQ actions on this page to request pricing, availability, documentation, and sourcing support for any listed alternative part.
Is C8051F040-GQ obsolete, and what replacement should buyers review first?
Check the lifecycle row on this page first. If buyers need a fast starting point, the strongest mapped replacement currently surfaced here is , followed by the other alternatives shown in the comparison table.
Engineering support
Need help validating the replacement path?
If your team is unsure whether a mapped alternative to C8051F040-GQ from Silicon Labs is really usable, contact us for help on package fit, pin compatibility, key parameter gaps, and qualification-facing review questions.
Contact a hardware engineer
Email our engineering support contact at [email protected], or use the contact page if the question should be routed across sourcing, engineering, and support.
developer_board
Package and pin compatibility
Review whether the alternate path looks credible from package, footprint, and pin-level perspectives.
tune
Parameter and function gaps
Surface the electrical, interface, or application-fit questions that still need confirmation before approval.
task_alt
Qualification and approval prep
Organize the documentation, datasheet evidence, and validation checkpoints your internal team may still require.