Texas Instruments Stellaris ARM Cortex-M3S 5000 series LM3S5662-IQR50-A0T, 32-bit single-core MCU, 50 MHz, 128 KB Flash, 32 KB SRAM, CAN/USB OTG/SPI/UART, 33 I/O, 4x10-bit ADC, -40°C to 85°C, 64-LQFP.
| Parameter | Value |
|---|---|
| Series | Stellaris® ARM® Cortex®-M3S 5000 |
| Mounting | Surface Mount |
| Oscillator type | Internal |
| Program memory type | FLASH |
| Voltage - supply (Vcc (Vdd)) | 2.25V ~ 2.75V |
| Operating temperature | -40°C~85°C(TA) |
| Speed | 50MHz |
| Package | Tape & Reel (TR) |
| RAM size | 32K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | Brown-out Detect/Reset, DMA, POR, PWM, WDT |
| Connectivity | CANbus, IrDA, Microwire, SPI, SSI, UART/USART, USB OTG |
| Number of i (O) | 33 |
| Core processor | ARM® Cortex®-M3 |
| Case | 64-LQFP |
| Data converters | A/D 4x10b |
| Program memory size | 128KB (128K x 8) |
The LM3S5662-IQR50-A0T: The peripheral set includes CAN, USB OTG, IrDA, Microwire, SPI, SSI, UART/USART, and a 4-channel 10-bit ADC. With 33 I/O lines and an internal oscillator, it targets industrial and automotive gateway applications where multiple serial buses need bridging.
It is still available through surplus and broker channels, but TI is not supporting new design-ins. For existing production, we can quote against an RFQ.
For a new design, consider TI's current Stellaris or TM4C series Cortex-M4 parts, which offer higher performance and longer lifecycle support. For a drop-in pin-compatible alternative within the same family, check the LM3S series variants with similar package and memory — but verify the exact pinout and peripheral set against your board.