Texas Instruments Stellaris ARM Cortex-M3S 1000 series LM3S1N11-IBZ50-C5, 32-bit MCU, 50 MHz, 64KB Flash, 12K x 8 RAM, 67 I/O, 108-LFBGA, -40°C to 85°C.
| Parameter | Value |
|---|---|
| Series | Stellaris® ARM® Cortex®-M3S 1000 |
| Mounting | Surface Mount |
| Oscillator type | Internal |
| Program memory type | FLASH |
| Voltage - supply (Vcc (Vdd)) | 1.08V ~ 3.6V |
| Operating temperature | -40°C~85°C(TA) |
| Speed | 50MHz |
| Package | Tray |
| RAM size | 12K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | Brown-out Detect/Reset, DMA, POR, PWM, WDT |
| Connectivity | I²C, IrDA, LINbus, Microwire, SPI, SSI, UART/USART |
| Number of i (O) | 67 |
| Core processor | ARM® Cortex®-M3 |
| Case | 108-LFBGA |
| Data converters | A/D 8x10b |
| Program memory size | 64KB (64K x 8) |
The core runs at 50 MHz, a modest speed for an ARM Cortex-M3, but sufficient for control loops, sensor fusion, and communication protocol handling. The 64 KB Flash and 12K x 8 RAM (12 KB) limit firmware complexity — expect to fit a moderate RTOS, a TCP/IP stack, and application code within that footprint. The 67 I/O pins in a 108-BGA package give plenty of GPIO for parallel interfaces and peripheral expansion.
Buyers need to know if the part is still in production to decide between design-in or plan for replacement.
A direct replacement or alternative ensures continuity in existing designs or BOMs without redesign.
Sourcing buyers need to verify stock and lead times to fulfill production or repair requirements.
Design engineers and technicians require full specifications, pinout, and electrical characteristics for integration.
Pricing data is critical for BOM costing and comparison with alternatives in sourcing decisions.
Engineers may need to verify drop-in compatibility between similar Stellaris variants to avoid board changes.