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Texas Instruments LM3S2432-IBZ50-A2T — Microcontrollers & Processors (MCU / MPU / DSP)

LM3S2432-IBZ50-A2T Stellaris ARM Cortex-M3 MCU, 50 MHz, NRND

MPNLM3S2432-IBZ50-A2T
NRND

Texas Instruments Stellaris® ARM® Cortex®-M3S 2000 series LM3S2432-IBZ50-A2T, 32-Bit Single-Core MCU, 50 MHz, 96 KB Flash, 32K x 8 RAM, CANbus/I²C/SPI/UART, 108-LFBGA, -40°C to 85°C.

$16.4876Ref. price · indicative, final on quote
Texas Instruments LM3S2432-IBZ50-A2T datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM3S2432-IBZ50-A2T specifications
ParameterValue
SeriesStellaris® ARM® Cortex®-M3S 2000
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
ConnectivityCANbus, I²C, IrDA, Microwire, SPI, SSI, UART/USART
Number of i (O)34
Core processorARM® Cortex®-M3
Case108-LFBGA
Data convertersA/D 3x10b
Program memory size96KB (96K x 8)

Product details

50 MHz Cortex-M3 — enough for the control loop

At 50 MHz the core handles typical PID loops, CAN message processing at 1 Mbps, and UART-to-SPI bridging without breaking a sweat. The 32 KB SRAM leaves room for a couple of CAN message buffers and a small RTOS heap.

NRND — plan the exit now

CANbus and the industrial peripheral set

The CANbus interface is the standout connectivity option here — it lets this MCU drop into a CAN-based sensor hub or actuator controller without an external transceiver (though you still need a CAN transceiver on the bus side).

Frequently asked questions

Is LM3S2432-IBZ50-A2T obsolete?

TI is not actively promoting it for new projects, but it remains available through distribution for existing production. We can source it to order — request a quote for current pricing and availability.

What is the replacement for LM3S2432-IBZ50-A2T?

TI has not published a direct drop-in replacement for this part. Within the Stellaris family, the LM3S2xxx series includes higher-density variants with similar peripheral sets, but pin compatibility varies by package. For new designs, consider a current-generation Cortex-M3 or M4 MCU with CAN, such as the TM4C123 series, which offers a similar peripheral mix in a BGA package. Verify the pinout and memory requirements against your application.