NRND — plan the replacement now
The LM3S2939-IBZ50-A2T: It is still available through independent distribution for existing BOM lines, but new designs should target a pin-compatible successor in the Stellaris family.
LM3S2939-IBZ50-A2T Stellaris ARM Cortex-M3 MCU, 50 MHz
MPNLM3S2939-IBZ50-A2T
NRND
Texas Instruments Stellaris® ARM® Cortex®-M3S 2000 series LM3S2939-IBZ50-A2T, 32-bit MCU, 50 MHz, 256 KB Flash, 64 KB SRAM, 57 I/O, CAN/I²C/SPI/UART, 2.25 V–2.75 V, -40°C to 85°C, 108-BGA.
$16.0680Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026
Specifications
| 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, QEI, SPI, SSI, UART/USART |
| Number of i (O) | 57 |
| Core processor | ARM® Cortex®-M3 |
| Case | 108-LFBGA |
| Data converters | A/D 3x10b |
| Program memory size | 256KB (256K x 8) |
Product details
Frequently asked questions
What is the replacement for LM3S2939-IBZ50-A2T?
Since the part is NRND, buyers need a direct replacement for new designs or to ensure long-term availability.
Is LM3S2939-IBZ50-A2T still in production?
Lifecycle status affects sourcing decisions and risk of obsolescence for existing designs.
What is the pinout of LM3S2939-IBZ50-A2T?
Design engineers need pin mapping for PCB layout and to ensure compatibility with existing schematics.
Where can I buy LM3S2939-IBZ50-A2T in stock?
Sourcing buyers require immediate inventory sources to fill BOM lines without delay.
What is the price of LM3S2939-IBZ50-A2T per unit?
Pricing is critical for cost estimation and budget approval in procurement.
What are the specifications of LM3S2939-IBZ50-A2T?
General validation of speed, memory, peripherals, and package is essential for design fit.