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Texas Instruments LM3S8971-IQC50-A2 — Microcontrollers & Processors (MCU / MPU / DSP)
Texas Instruments

LM3S8971-IQC50-A2 Stellaris ARM Cortex-M3 MCU, 50 MHz, 256 KB Flash

MPNLM3S8971-IQC50-A2
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Texas Instruments Stellaris® ARM® Cortex®-M3S 8000 series MCU, LM3S8971-IQC50-A2, 32-Bit Single-Core, 50MHz, 256KB FLASH, 64K x 8 RAM, Ethernet, CAN, 38 I/O, 100-LQFP, -40°C~85°C.

$44.5100Ref. price · indicative, final on quote
LM3S8971-IQC50-A2 datasheet
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Specifications

LM3S8971-IQC50-A2 Technical Specifications
ParameterValue
SeriesStellaris® ARM® Cortex®-M3S 8000
Mounting typeSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))2.25V ~ 2.75V
Operating temperature-40°C~85°C(TA)
Speed50MHz
PackageTray
RAM size64K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, POR, PWM, WDT
ConnectivityCANbus, Ethernet, IrDA, Microwire, QEI, SPI, SSI, UART/USART
Number of i (O)38
Core processorARM® Cortex®-M3
Case100-LQFP
Data convertersA/D 8x10b
Program memory size256KB (256K x 8)

Product details

What the 50 MHz core and memory mean for your BOM

At 50 MHz the Cortex-M3 runs a lightweight TCP/IP stack and a CANopen protocol concurrently without a second MCU. The 256 KB Flash holds a bootloader, stack, and application code; the 64 KB SRAM buffers Ethernet frames and CAN message queues.

Ethernet and CAN — what they actually connect to

The Ethernet controller includes an integrated PHY, so you connect directly to a connector with magnetics — no external PHY chip needed. The CAN controller requires an external transceiver to interface with the bus.

Frequently asked questions

Does LM3S8971-IQC50-A2 have Ethernet and CAN?

Yes, it integrates an Ethernet MAC with PHY and a CAN 2.0B controller, alongside SPI, SSI, UART, IrDA, and QEI interfaces.

What is the pin-compatible alternative to LM3S8971-IQC50-A2?

Within the Stellaris 8000 series, parts with higher Flash or RAM densities share the same 100-LQFP footprint. Check the LM3S8xxx family for a drop-in upgrade path with more memory.