What is a cross-reference page for LM3S5791-IQC80-C3?
This page groups mapped replacement options for LM3S5791-IQC80-C3 so buyers and engineers can compare alternatives before requesting a quote or approving a substitute.
Alternative part analysis
LM3S5791-IQC80-C3 replacements, alternatives, and cross reference
Compare mapped replacement and alternative options for LM3S5791-IQC80-C3, then verify package, specifications, and application fit before approval.
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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 LM3S5791-IQC80-C3 Texas Instruments |
|---|---|
| Part Number | LM3S5791-IQC80-C3 |
| Manufacturer | Texas Instruments |
| Category | Integrated Circuits (ICs) |
| Subcategory | Embedded - Microcontrollers |
| Package | LQFP |
| Series | Stellaris® ARM® Cortex®-M3S 5000 |
| Key Attributes | - |
| Description | IC MCU 32BIT 128KB FLASH 100LQFP |
| Lifecycle | - |
| Stock | 102,501 |
| Available | 19,058 |
| Min Order | 1 |
| Datasheet | Request |
| Packaging | Tray |
| REACH Status | REACH Unaffected |
| Lead Free | Contains Lead |
| Mounting Type | Surface Mount |
| Part Status | Obsolete |
| Categories | Integrated Circuits (ICs) |
| Peak Reflow Temperature (Cel) | 260 |
| Terminal Form | GULL WING |
| Technology | CMOS |
| Manufacturer | Texas |
| Terminal Position | QUAD |
| Terminal Pitch | 0.5mm |
| Operating Temperature | -40°C~85°C TA |
| Sub-Categories | Embedded - Microcontrollers |
| Package / Case | 100-LQFP |
| Supply Voltage | 1.2V |
| ECCN | 3A991A2 |
| Length | 14.2mm |
| Series | Stellaris® ARM® Cortex®-M3S 5000 |
| Radiation Hardening | No |
| Mount | Surface Mount |
| Pbfree Code | yes |
| Operating Supply Voltage | 3.3V |
| Number of Bits | 10 |
| Number of Pins | 100 |
| Pin Count | 100 |
| Number of Terminations | 100 |
| Frequency | 80MHz |
| Number of I/O | 72 |
| Interface | CAN, EBI/EMI, I2C, IrDA, LIN, SPI, UART, USART, USB |
| Base Part Number | LM3S5791 |
| Manufacturer's Part No. | LM3S5791-IQC80-C3 |
| Oscillator Type | Internal |
| Core Architecture | ARM |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER |
| Program Memory Size | 128KB 128K x 8 |
| Memory Size | 128kB |
| Core Size | 32-Bit |
| RAM Size | 64K x 8 |
| Core Processor | ARM® Cortex®-M3 |
| Data Converter | A/D 16x10b |
| Program Memory Type | FLASH |
| Watchdog Timer | Yes |
| Has ADC | YES |
| PWM Channels | YES |
| DAC Channels | NO |
| Number of Timers/Counters | 4 |
| DMA Channels | YES |
| Number of A/D Converters | 2 |
| Bit Size | 32 |
| Data Bus Width | 32b |
| Peripherals | Brown-out Detect/Reset, DMA, I2S, POR, PWM, WDT |
| Number of UART Channels | 3 |
| Voltage - Supply (Vcc/Vdd) | 1.08V~1.32V |
| Connectivity | CANbus, EBI/EMI, I2C, IrDA, LINbus, Microwire, QEI, SPI, SSI, UART/USART, USB OTG |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) |
| HTSUS | 8542.31.0001 |
| Height Seated (Max) | 1.6mm |
| Actions |
Cross-reference FAQ
Replacement Part Questions
Short answers for teams reviewing LM3S5791-IQC80-C3 replacement and equivalent-part options.
Does a mapped alternative mean a guaranteed drop-in replacement for LM3S5791-IQC80-C3?
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 LM3S5791-IQC80-C3 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 LM3S5791-IQC80-C3?
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 LM3S5791-IQC80-C3 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 LM3S5791-IQC80-C3 from Texas Instruments 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
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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.