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.
| Parameter | Value |
|---|---|
| Series | Stellaris® ARM® Cortex®-M3S 8000 |
| Mounting | 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 | Tray |
| RAM size | 64K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Connectivity | CANbus, Ethernet, IrDA, Microwire, QEI, SPI, SSI, UART/USART |
| Number of i (O) | 38 |
| Core processor | ARM® Cortex®-M3 |
| Case | 100-LQFP |
| Data converters | A/D 8x10b |
| Program memory size | 256KB (256K x 8) |
The 256 KB Flash holds a bootloader, stack, and application code; the 64 KB SRAM buffers Ethernet frames and CAN message queues.
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.
Yes, it integrates an Ethernet MAC with PHY and a CAN 2.0B controller, alongside SPI, SSI, UART, IrDA, and QEI interfaces.
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.