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Texas Instruments LM3S5C36-IQR80-A2T — Microcontrollers & Processors (MCU / MPU / DSP)

Texas Instruments LM3S5C36-IQR80-A2T Stellaris ARM Cortex-M3 MCU, 80 MHz

MPNLM3S5C36-IQR80-A2T
Obsolete

Texas Instruments Stellaris ARM Cortex-M3S 5000 series 32-bit MCU, LM3S5C36-IQR80-A2T, 80 MHz, 512 KB Flash, 64 KB RAM, CAN, USB, 33 I/O, 64-LQFP, -40 to 85°C.

Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM3S5C36-IQR80-A2T specifications
ParameterValue
SeriesStellaris® ARM® Cortex®-M3S 5000
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))3V ~ 3.6V
Operating temperature-40°C~85°C(TA)
Speed80MHz
PackageTape & Reel (TR)
RAM size64K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, DMA, POR, PWM, WDT
ConnectivityCANbus, I²C, IrDA, LINbus, Microwire, QEI, SPI, SSI, UART/USART, USB
Number of i (O)33
Core processorARM® Cortex®-M3
Case64-LQFP
Data convertersA/D 8x12b
Program memory size512KB (512K x 8)

Product details

The 80 MHz core runs a PID loop at several kHz alongside CAN message handling and USB device stack.

512 KB Flash and 64 KB RAM — sizing the firmware

The 512 KB Flash can hold a full bootloader, RTOS kernel, and a moderate application with CANopen or USB CDC class drivers. The 64 KB RAM is adequate for a few kilobytes of stack and data buffers; if your design requires large frame buffers or extensive data logging, you will need external SRAM or a part with larger on-chip RAM.

Texas Instruments has marked the LM3S5C36-IQR80-A2T as obsolete. No official successor part number is listed. For new designs, look at TI's current Tiva C Series or other Cortex-M4 parts.

Frequently asked questions

What is the best replacement for LM3S5C36-IQR80-A2T?

Texas Instruments has not published an official direct replacement for this part. For new designs, consider the Tiva C Series (TM4C123 or TM4C129) which offer Cortex-M4 cores with similar peripheral sets. Verify pin compatibility and software migration effort before committing.

Does LM3S5C36-IQR80-A2T have CAN bus and USB?

Yes, this MCU includes a CAN 2.0B controller and a USB interface (device/host/OTG), along with UART, SPI, I2C, SSI, and IrDA.

What is LM3S5C36-IQR80-A2T's listed speed?

The core runs at 80 MHz.

Where can I buy LM3S5C36-IQR80-A2T?

This obsolete part is available through independent distribution. Submit an RFQ for current availability and pricing — it is sourced and quoted to order.