Texas Instruments Stellaris ARM Cortex-M3S 2000 series MCU, LM3S2918-IBZ50-A2T, 32-bit single-core, 50MHz, 256KB Flash, 64KB SRAM, 52 I/O, CAN/I²C/SPI/SSI/UART, 8x10b ADC, 2.25-2.75V, -40 to 85°C, 108-LFBGA, Tape & Reel.
| Parameter | Value |
|---|---|
| Series | Stellaris® ARM® Cortex®-M3S 2000 |
| 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 | Tape & Reel (TR) |
| RAM size | 64K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Connectivity | CANbus, I²C, IrDA, Microwire, SPI, SSI, UART/USART |
| Number of i (O) | 52 |
| Core processor | ARM® Cortex®-M3 |
| Case | 108-LFBGA |
| Data converters | A/D 8x10b |
| Program memory size | 256KB (256K x 8) |
The 8-channel 10-bit ADC and six PWM outputs handle local sensor feedback and motor drive timing. This is a part designed for a single-board controller that talks to a CAN bus and manages a handful of analog inputs.
This is not a part you swap on site with a soldering iron.
It is still available through distribution for existing production, but TI is winding it down. If you need a part for a new design, look at the current Stellaris or TM4C series from TI — they are pin-compatible across many of the same peripheral options.
Yes, it has one CAN 2.0B controller on the connectivity block. The full list of serial interfaces includes CAN, I²C, IrDA, Microwire, SPI, SSI, and UART/USART — so at least one UART is present, and the SSI/SPI pins can be reconfigured for additional UARTs if needed via firmware.
TI does not publish a single direct pin-for-pin replacement for this NRND part, but the TM4C123 series (e.g., TM4C123GH6PM) offers a similar Cortex-M4F core with CAN, more memory, and a wider supply range. The BGA footprint differs, so a PCB respin is required. For a drop-in on an existing board, check the LM3S9B96 or LM3S8962 — they share the Stellaris peripheral set and may have compatible BGA layouts, but verify the ball map against your design.