Texas Instruments Stellaris ARM Cortex-M3S 1000 series MCU, LM3S1N11-IBZ50-C1T, 32-Bit Single-Core, 50MHz, 64KB (64K x 8) FLASH, 12K x 8 RAM, 108-LFBGA, -40°C~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 | Tape & Reel (TR) |
| 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) |
This part carries an Obsolete lifecycle status.
The MCU integrates a brown-out detect/reset, DMA controller, POR, PWM outputs, and a watchdog timer. On the analog side it includes an 8-channel, 10-bit ADC.
Yes, the LM3S1N11-IBZ50-C1T is listed as Obsolete. It is no longer manufactured by Texas Instruments, but can be sourced through independent distribution channels against an RFQ.
For a pin-compatible alternative within the Stellaris family, you would need to cross-reference the 108-BGA footprint and peripheral set against other LM3S1N11 variants or later Cortex-M3 parts from TI. Sourcing the exact obsolete order code through independent distribution is the most reliable path for existing BOMs.
The core processor runs at 50 MHz, based on the ARM Cortex-M3 architecture.