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Texas Instruments LM3S5C36-IQR80-A1 — Microcontrollers & Processors (MCU / MPU / DSP)

LM3S5C36-IQR80-A1 Stellaris ARM Cortex-M3 MCU, 80MHz

MPNLM3S5C36-IQR80-A1
Obsolete

Texas Instruments Stellaris ARM Cortex-M3S 5000 series LM3S5C36-IQR80-A1, 32-bit single-core MCU, 80MHz, 512KB Flash, 64Kx8 SRAM, 33 I/O, CAN/USB/SSI/SPI/I2C, 8x12-bit ADC, -40°C to 85°C, 64-LQFP.

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

Specifications

LM3S5C36-IQR80-A1 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
PackageTray
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 LM3S5C36-IQR80-A1: It integrates a rich set of peripherals including CAN, USB, I²C, SPI, SSI, UART, IrDA, LIN, Microwire, and QEI, plus an 8-channel 12-bit ADC. This combination targets industrial control, motor drive, automotive gateway, and sensor hub applications where deterministic real-time response and multiple serial buses are required.

No last-time-buy window remains. For existing BOM lines, procurement must source through independent distribution or surplus channels.

The 33 I/O lines, combined with CAN, USB, and multiple serial interfaces, allow a single chip to handle both real-time control loops and higher-level protocol stacks without an external bridge.

Frequently asked questions

What is the replacement for LM3S5C36-IQR80-A1?

Texas Instruments has not published an official replacement for this exact order code. Any pin-compatible alternative within the Stellaris family would need to be verified against the original design's Flash, SRAM, and peripheral requirements. We can help identify a suitable cross if you share the target application constraints.