What is a cross-reference page for C8051F540-IM?
This page groups mapped replacement options for C8051F540-IM so buyers and engineers can compare alternatives before requesting a quote or approving a substitute.
Alternative part analysis
C8051F540-IM replacements, alternatives, and cross reference
Compare mapped replacement and alternative options for C8051F540-IM, then verify package, specifications, and application fit before approval.
Compare C8051F540-IM against mapped replacement options
Review package, lifecycle, stock, and MOQ in one view
Move from engineering screening to RFQ without leaving the page
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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.
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| Parameter Comparison Chart | Current part C8051F540-IM Silicon Labs |
|---|---|
| Part Number | C8051F540-IM |
| Manufacturer | Silicon Labs |
| Category | Integrated Circuits (ICs) |
| Subcategory | Embedded - Microcontrollers |
| Package | - |
| Series | C8051F54x |
| Key Attributes | - |
| Description | IC MCU 8BIT 16KB FLASH 32QFN |
| Lifecycle | - |
| Stock | 28,151 |
| Available | 37,407 |
| Min Order | 1 |
| Datasheet | Available |
| JESD-609 Code | e3 |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| RoHS Status | ROHS3 Compliant |
| HTSUS | 8542.31.0001 |
| Oscillator Type | Internal |
| Memory Size | 16kB |
| Core Size | 8-Bit |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER |
| Program Memory Size | 16KB 16K x 8 |
| Peripherals | POR, PWM, Temp Sensor, WDT |
| Bit Size | 8 |
| Program Memory Type | FLASH |
| DMA Channels | NO |
| Data Bus Width | 8b |
| Watchdog Timer | Yes |
| Number of I2C Channels | 1 |
| Has ADC | YES |
| PWM Channels | YES |
| DAC Channels | NO |
| Number of Timers/Counters | 4 |
| Number of Channels | 6 |
| Core Processor | 8051 |
| RAM Size | 1.25K x 8 |
| Voltage - Supply (Vcc/Vdd) | 1.8V~5.25V |
| Data Converter | A/D 25x12b |
| Connectivity | SMBus (2-Wire/I2C), LINbus, SPI, UART/USART |
| Part Status | Active |
| Packaging | Tube |
| Mounting Type | Surface Mount |
| Factory Lead Time | 8 Weeks |
| Published | 2000 |
| Categories | Integrated Circuits (ICs) |
| Frequency | 50MHz |
| Technology | CMOS |
| Qualification Status | Not Qualified |
| Terminal Position | QUAD |
| Sub-Categories | Embedded - Microcontrollers |
| Operating Temperature | -40°C~125°C TA |
| ECCN | 3A991A2 |
| Package / Case | 32-VFQFN Exposed Pad |
| Terminal Form | NO LEAD |
| Contact Plating | Tin |
| Mount | Surface Mount |
| Length | 5mm |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| Reflow Temperature-Max (s) | NOT SPECIFIED |
| Height | 1mm |
| Number of I/O | 25 |
| Width | 5mm |
| Number of Terminations | 32 |
| Number of Pins | 32 |
| Pin Count | 32 |
| Manufacturer | Silicon Labs |
| Supply Voltage | 2.1V |
| Interface | 2-Wire, I2C, LIN, SMBus, SPI, UART, USART |
| Series | C8051F54x |
| Base Part Number | C8051F54 |
| Manufacturer's Part No. | C8051F540-IM |
| Actions |
Cross-reference FAQ
Replacement Part Questions
Short answers for teams reviewing C8051F540-IM replacement and equivalent-part options.
Does a mapped alternative mean a guaranteed drop-in replacement for C8051F540-IM?
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 C8051F540-IM 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 C8051F540-IM?
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 C8051F540-IM 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 C8051F540-IM 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.
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Package and pin compatibility
Review whether the alternate path looks credible from package, footprint, and pin-level perspectives.
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Parameter and function gaps
Surface the electrical, interface, or application-fit questions that still need confirmation before approval.
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Qualification and approval prep
Organize the documentation, datasheet evidence, and validation checkpoints your internal team may still require.