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Texas Instruments LM3S5662-IQR50-A0 — Microcontrollers & Processors (MCU / MPU / DSP)
Texas Instruments

LM3S5662-IQR50-A0 Stellaris ARM Cortex-M3 MCU, 50 MHz, 128 KB Flash

MPNLM3S5662-IQR50-A0
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Texas Instruments Stellaris® ARM® Cortex®-M3S 5000 series LM3S5662-IQR50-A0, 32-Bit Single-Core MCU, 50 MHz, 128 KB Flash, 32K x 8 RAM, 64-LQFP, -40°C to 85°C.

$13.9502Ref. price · indicative, final on quote
LM3S5662-IQR50-A0 datasheet
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Specifications

LM3S5662-IQR50-A0 Technical Specifications
ParameterValue
SeriesStellaris® ARM® Cortex®-M3S 5000
Mounting typeSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))2.25V ~ 2.75V
Operating temperature-40°C~85°C(TA)
Speed50MHz
PackageTray
RAM size32K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, DMA, POR, PWM, WDT
ConnectivityCANbus, IrDA, Microwire, SPI, SSI, UART/USART, USB OTG
Number of i (O)33
Core processorARM® Cortex®-M3
Case64-LQFP
Data convertersA/D 4x10b
Program memory size128KB (128K x 8)

Product details

What this MCU brings to the BOM

The LM3S5662-IQR50-A0 is a 32-bit ARM Cortex-M3 microcontroller from the Stellaris series, clocked at 50 MHz with 128 KB of Flash and 32 KB of RAM. It integrates USB OTG, CAN, and multiple serial interfaces (SPI, SSI, UART, IrDA, Microwire).

50 MHz core — what it buys you

The 50 MHz Cortex-M3 core delivers enough throughput for real-time control loops (motor commutation, sensor fusion) and protocol handling (USB OTG, CAN) without an external PHY for most cases. The 128 KB Flash and 32 KB RAM are sized for mid-complexity firmware — a Modbus gateway or a basic HMI controller fits; a full TCP/IP stack with large buffers will push the RAM budget.

Peripheral set and I/O

33 GPIOs, a 4-channel 10-bit ADC, internal oscillator, and peripherals including brown-out detect, DMA, POR, PWM, and WDT. The USB OTG interface supports device and host modes.

Frequently asked questions

What is the recommended replacement for LM3S5662-IQR50-A0?

No official successor order code is listed. For a pin-compatible path, look at the broader Stellaris LM3S family — density and peripheral options vary, so verify the peripheral set and memory map against your firmware before swapping.

Does LM3S5662-IQR50-A0 support USB OTG?

Yes, the connectivity set includes USB OTG, along with CAN, SPI, SSI, UART, IrDA, and Microwire.