TI LM3S6952-IQC50-A2T — Stellaris Cortex-M3 100-LQFP MCU, 256KB Flash, Ethernet
Texas Instruments LM3S6952, Stellaris ARM Cortex-M3S 6000 series, 32-bit single-core MCU at 50MHz, 256KB Flash / 64KB RAM, Ethernet MAC plus full UART/SPI/I²C/SSI stack, 43 I/O, integrated POR/BOR, 2.25V–2.75V supply, -40°C to 85°C, 100-LQFP tape-and-reel.
- 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
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- MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
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Specifications
| Parameter | Value |
|---|---|
| Series | Stellaris® ARM® Cortex®-M3S 6000 |
| Mounting type | Surface Mount |
| Oscillator type | Internal |
| Program memory type | FLASH |
| Voltage - supply (Vcc (Vdd)) | 2.25V ~ 2.75V |
| Operating temperature | -40°C~85°C(TA) |
| Speed | 50MHz |
| Package | Tape & Reel (TR) |
| RAM size | 64K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Connectivity | Ethernet, I²C, IrDA, Microwire, QEI, SPI, SSI, UART/USART |
| Number of i (O) | 43 |
| Core processor | ARM® Cortex®-M3 |
| Case | 100-LQFP |
| Data converters | A/D 3x10b |
| Program memory size | 256KB (256K x 8) |
Frequently asked questions
Is the LM3S6952-IQC50-A2T still active or fully discontinued?
The lifecycle designation is EOL/HOT — Obsolete. It is no longer in regular authorized distribution. Any procurement today routes through surplus or broker channels with Chain of Custody documentation.
What is the memory configuration of this part and does it differ from other Stellaris 6000 series variants?
The LM3S6952 carries 256KB Flash and 64KB SRAM. Other variants in the same series — such as the LM3S6965 — share the same 100-pin footprint but differ in Ethernet MAC peripheral configuration and memory density. The memory split is a firm BOM constraint; firmware locked to this partition cannot be migrated to a lower-Flash variant without a re-compile and re-validation.
Does the integrated brown-out reset block replace an external supervisor IC on this design?
The LM3S6952 integrates brown-out detect/reset and power-on reset peripherals. Whether the internal trip voltage matches your supply tolerance depends on the specific rail — the internal POR/BOR covers most 2.5 V nominal designs, but a legacy board showing intermittent brown-out resets at supply corners may need an external supervisor to guarantee reset depth across the full -40°C to 85°C temperature range.
What supply voltage does this part require, and does 3.3 V logic work with it?
The LM3S6952 operates on a 2.25 V to 2.75 V supply rail. This is a narrow-voltage part — a 3.3 V nominal rail exceeds the upper limit. The LDO feeding this MCU must be rated and trimmed to hold within that window at full load and across temperature, or level-shifting and rail separation is required at the board level.