For a sustaining BOM, the channel still carries inventory — we source it through independent distribution and quote to order. If you are starting a new project, look at the current-generation Stellaris or TM4C Cortex-M4 parts for a longer roadmap.
LM3S1627-IQR50-A0T Stellaris ARM Cortex-M3 MCU, 50 MHz
MPNLM3S1627-IQR50-A0T
NRND
Texas Instruments Stellaris ARM Cortex-M3S 1000 series LM3S1627-IQR50-A0T, 32-bit single-core MCU, 50 MHz, 128 KB Flash, 32K x 8 RAM, 33 I/O, 64-LQFP, -40°C to 85°C.
$11.0188Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026
Specifications
| Parameter | Value |
|---|---|
| Series | Stellaris® ARM® Cortex®-M3S 1000 |
| 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 | I²C, IrDA, Microwire, QEI, SPI, SSI, UART/USART |
| 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) |
Product details
Frequently asked questions
What is the replacement for LM3S1627-IQR50-A0T?
Texas Instruments has not published a direct pin-compatible replacement for this NRND part. For new designs, consider the current TM4C12x or TM4C123x series Cortex-M4 MCUs, which offer higher performance and a longer lifecycle — but verify the pinout and supply voltage before migrating.