Texas Instruments Stellaris ARM Cortex-M3S 3000 series LM3S3739-IQC50-A0T, 32-bit ARM Cortex-M3 MCU, 50 MHz, 128 KB Flash, 64 KB SRAM, USB host/device, 61 I/O, -40°C to 85°C, 100-LQFP.
| Parameter | Value |
|---|---|
| Series | Stellaris® ARM® Cortex®-M3S 3000 |
| 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 | 64K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | Brown-out Detect/Reset, DMA, POR, PWM, WDT |
| Connectivity | I²C, IrDA, Microwire, SPI, SSI, UART/USART, USB |
| Number of i (O) | 61 |
| Core processor | ARM® Cortex®-M3 |
| Case | 100-LQFP |
| Data converters | A/D 8x10b |
| Program memory size | 128KB (128K x 8) |
The exposed pad is not present on this package variant, so thermal dissipation relies on the leadframe — keep the ambient airflow or a local heatsink if the core runs sustained loads. Surface-mount only, no through-hole option.
Yes, Texas Instruments lists this part as obsolete. No official replacement part number is provided. For legacy BOM lines, source through independent distribution against an RFQ.