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Texas Instruments LM3S8962-IBZ50-A2 — Microcontrollers & Processors (MCU / MPU / DSP)

LM3S8962-IBZ50-A2 Stellaris ARM Cortex-M3 MCU, 50MHz, 256KB Flash

MPNLM3S8962-IBZ50-A2
Obsolete

Texas Instruments Stellaris ARM Cortex-M3S 8000 series, LM3S8962-IBZ50-A2, 32-Bit Single-Core MCU, 50MHz, 256KB Flash, 64K x 8 RAM, Ethernet + CAN, 42 I/O, 108-LFBGA, -40°C~85°C.

Texas Instruments LM3S8962-IBZ50-A2 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM3S8962-IBZ50-A2 specifications
ParameterValue
SeriesStellaris® ARM® Cortex®-M3S 8000
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))2.25V ~ 2.75V
Operating temperature-40°C~85°C(TA)
Speed50MHz
PackageTray
RAM size64K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, POR, PWM, WDT
ConnectivityCANbus, Ethernet, I²C, IrDA, Microwire, QEI, SPI, SSI, UART/USART
Number of i (O)42
Core processorARM® Cortex®-M3
Case108-LFBGA
Data convertersA/D 4x10b
Program memory size256KB (256K x 8)

Product details

50 MHz Cortex-M3 core. Runs a lightweight TCP/IP stack alongside a CANopen master node and Modbus RTU slave with headroom for PID loop updates.

256 KB Flash and 64 KB RAM — sizing the firmware budget

The 256 KB Flash holds a moderate application: a FreeRTOS kernel, lwIP stack, CANopen stack, and a few hundred lines of application code fit comfortably. The 64 KB SRAM leaves about 40 KB free after the stack and RTOS heap for packet buffers and data arrays. If your application requires a full web server with TLS or a large data-logging buffer, this part will run out of RAM — consider an external SRAM or a larger sibling in the Stellaris family.

The 108-ball BGA (10x10 mm) requires a 4-layer PCB with via-in-pad for the fine-pitch balls — not a two-layer board part. The BGA package also limits hand-solder rework; plan for reflow assembly.

Obsolete — sourcing reality and alternatives

Frequently asked questions

What is the closest pin-compatible alternative to LM3S8962-IBZ50-A2?

There is no official pin-compatible replacement from TI. The TM4C129 series offers similar Ethernet + CAN functionality but in a different package and pinout. For a drop-in substitute, you would need to search the surplus market for the same order code.