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Texas Instruments LM3SA000-IQC50-A2T — Microcontrollers & Processors (MCU / MPU / DSP)

TI LM3SA000-IQC50-A2T ARM Cortex-M3 MCU, 50 MHz, NRND

MPNLM3SA000-IQC50-A2T
NRND

Texas Instruments Stellaris ARM Cortex-M3S 1000 series LM3SA000-IQC50-A2T, 32-bit ARM Cortex-M3 single-core MCU, 50 MHz, 256 KB Flash, 64 KB RAM, 52 I/O, 2.25–2.75 V supply, -40 to 85°C, 100-LQFP.

$23.6527Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM3SA000-IQC50-A2T specifications
ParameterValue
SeriesStellaris® ARM® Cortex®-M3S 1000
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))2.25V ~ 2.75V
Operating temperature-40°C~85°C(TA)
Speed50MHz
PackageTape & Reel (TR)
RAM size64K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, POR, PWM, WDT
ConnectivityI²C, IrDA, Microwire, SPI, SSI, UART/USART
Number of i (O)52
Core processorARM® Cortex®-M3
Case100-LQFP
Data convertersA/D 8x10b
Program memory size256KB (256K x 8)

Product details

It is built for industrial control, sensor fusion, and human-machine interface applications where the Cortex-M3 architecture provides a good balance of processing throughput and deterministic interrupt response. The 50 MHz clock is enough for most real-time control loops and protocol stacks (TCP/IP offload, CAN, Modbus) without needing a higher-speed part that would add cost and power. The 256 KB program memory and 64 KB data memory give the firmware team room for a RTOS, a communication stack, and moderate application code — if your BOM needs more than that, you are looking at a different density tier.

Peripheral set and I/O — what connects without glue logic

This means most common serial sensors, displays, and radios can connect directly — no external UART-to-SPI bridge or I²C expander needed. The 8-channel 10-bit ADC covers basic analog sensing (potentiometers, thermistors, current shunts) without an external ADC. If your design needs USB, CAN, or Ethernet, this part does not carry them on-chip — you would add an external transceiver or move to a Stellaris variant with those blocks.

This means Texas Instruments will continue to manufacture and ship the part for existing production, but it is not intended for new design wins. For a BOM line already in production, NRND is a signal to evaluate the end-of-life timeline and plan a last-time buy or a migration to a successor. For new designs, the recommendation is to select an active part from the current Stellaris portfolio or an equivalent from NXP, ST, or Renesas.

Supply rail and temperature — the operating envelope

Frequently asked questions

Is LM3SA000-IQC50-A2T compatible with standard ARM Cortex-M3 tools?

Yes. The ARM Cortex-M3 core is supported by all standard toolchains (Keil MDK, IAR EWARM, GCC with ARM Embedded) and debug probes (J-Link, ST-Link, CMSIS-DAP). The Stellaris family uses the standard Cortex-M3 programmer's model and debug interface, so no proprietary tools are required.