Skip to main content
Texas Instruments LM3S1435-IBZ50-A2T — Microcontrollers & Processors (MCU / MPU / DSP)

LM3S1435-IBZ50-A2T Stellaris ARM Cortex-M3 MCU, 50 MHz

MPNLM3S1435-IBZ50-A2T
NRND

Texas Instruments Stellaris® ARM® Cortex®-M3S 1000 series LM3S1435-IBZ50-A2T, 32-Bit Single-Core MCU, 50MHz, 96KB FLASH, 32K x 8 RAM, 108-LFBGA, -40°C~85°C.

$15.8730Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM3S1435-IBZ50-A2T specifications
ParameterValue
SeriesStellaris® ARM® Cortex®-M3S 1000
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))2.25V ~ 2.75V
Operating temperature-40°C~85°C(TA)
Speed50MHz
PackageTape & Reel (TR)
RAM size32K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, POR, PWM, WDT
ConnectivityI²C, IrDA, Microwire, SPI, SSI, UART/USART
Number of i (O)46
Core processorARM® Cortex®-M3
Case108-LFBGA
Data convertersA/D 2x10b
Program memory size96KB (96K x 8)

Product details

The built-in 2-channel 10-bit ADC handles basic analog sensing.

That does not mean it is instantly discontinued, but TI has flagged it as a mature product with no future development. New designs should look for a current-generation replacement.

The ARM Cortex-M3 core at 50 MHz is a solid mid-range performer for control-loop applications and protocol handling. It can handle a UART at 115.2 kbps with headroom, or run a PWM loop at several kilohertz without jitter. The 32-bit architecture and single-cycle multiply help with PID calculations and sensor fusion. For a BOM line, this is the tier that fits between 8-bit MCUs and high-end 120 MHz+ parts — enough for most industrial and IoT edge nodes without over-spending on a faster core you will not use.

The 32 KB SRAM gives room for data buffers and a modest heap. If your design needs OTA updates or a larger application, you will bump into the Flash ceiling; if you are logging sensor data or handling large communication packets, the SRAM may be tight. For a fixed-function controller (motor drive, simple HMI, protocol gateway), it is a comfortable fit.

108-ball BGA — rework and field reality

The 108-ball LFBGA (10x10 mm) is a fine-pitch BGA. That means no socket, no hand-solder field swap — you need a rework station with a hot-air nozzle and a stencil for reballing. Not a part you carry in a field kit for a parking-lot repair. If your application demands field-replaceability, consider a socketed or QFP variant in the same family. For factory-built boards with no planned field repair, the BGA saves board area and gives better thermal and electrical performance.

Frequently asked questions

Is LM3S1435-IBZ50-A2T obsolete?

It is not yet discontinued, but TI has flagged it as mature. For new designs, look for a current-generation replacement. For existing production, it remains available through independent distribution.