Texas Instruments Stellaris ARM Cortex-M3S 1000 series LM3S1150-IBZ50-A2T, 32-bit MCU, 50MHz, 64KB Flash, 16K x 8 RAM, 52 I/O, 2.25V–2.75V supply, -40°C to 85°C, 108-BGA (10x10 mm).
| Parameter | Value |
|---|---|
| Series | Stellaris® ARM® Cortex®-M3S 1000 |
| 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 | 16K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Connectivity | I²C, IrDA, Microwire, QEI, SPI, SSI, UART/USART |
| Number of i (O) | 52 |
| Core processor | ARM® Cortex®-M3 |
| Case | 108-LFBGA |
| Program memory size | 64KB (64K x 8) |
The 108-ball BGA (10x10 mm) with 0.8 mm pitch demands a four-layer PCB minimum for fanout and a controlled reflow profile — not a hand-solderable package. Internal oscillator is available, but for CAN or precision timing an external crystal is recommended.
It is not yet discontinued, but it is on the phase-out path. For existing production we can source it; for new designs consider a current Stellaris or Tiva-C series part.
Texas Instruments does not list a single direct pin-compatible replacement for the LM3S1150-IBZ50-A2T. The closest functional successor would be a current Tiva-C series Cortex-M4F part with similar peripheral mix — but the BGA footprint and pinout differ. Check the Stellaris-to-Tiva migration guide for a recommended part.