50 MHz ARM Cortex-M3 with industrial connectivity
The LM3S5762-IQR50-A0 from the Stellaris ARM Cortex-M3S 5000 series is a 32-bit single-core MCU clocked at 50 MHz, built around the ARM Cortex-M3 core. It carries 128 KB of Flash program memory and 64K x 8 of RAM.
Connectivity and peripheral set
On the interface side, the MCU integrates CANbus, USB OTG, IrDA, SPI, SSI, UART/USART, and Microwire — a mix that supports dual-role USB (host or device) and CAN-based industrial networks without external transceivers on the digital side. The 33 general-purpose I/O lines and internal oscillator reduce external BOM count. The 4-channel 10-bit ADC is adequate for slow analog sensing (temperature, voltage monitoring) but not high-speed data acquisition.
NRND — what it means for sourcing
Texas Instruments has marked this device as NRND (Not Recommended for New Designs). No official successor part is listed in the available documentation. For existing BOM lines, the part remains available through independent distribution on a last-time-buy or surplus basis. New projects should select a current-production Stellaris or Tiva-C family member with equivalent Flash/RAM and peripheral mapping.
Package and mounting
Housed in a 64-LQFP package (10x10 mm body), surface-mount only.