Supply voltage and temperature — design constraints
The 100-LQFP (14x14 mm) package is hand-solderable with a fine-tip iron and a steady hand, though a hot-air rework station makes placement easier.
LM3S1133-IQC50-A2T Stellaris ARM Cortex-M3 MCU, 50 MHz
MPNLM3S1133-IQC50-A2T
Obsolete
Texas Instruments Stellaris® ARM® Cortex®-M3S 1000 series LM3S1133-IQC50-A2T, 32-bit single-core MCU, 50 MHz, 64 KB Flash, 16 KB SRAM, 44 I/O, 100-LQFP, -40°C to 85°C.
$17.5900Ref. 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 | 16K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Connectivity | I²C, IrDA, Microwire, SPI, SSI, UART/USART |
| Number of i (O) | 44 |
| Core processor | ARM® Cortex®-M3 |
| Case | 100-LQFP |
| Data converters | A/D 2x10b |
| Program memory size | 64KB (64K x 8) |
Product details
Frequently asked questions
Where can I buy LM3S1133-IQC50-A2T?
We source LM3S1133-IQC50-A2T through independent distribution channels. Submit an RFQ for current availability and pricing — quotes are confirmed at order time, not from a live stock counter.
Is LM3S1133-IQC50-A2T obsolete?
Yes, Texas Instruments lists this part as obsolete. There is no official successor, so procurement relies on the surplus and broker market.
What is the replacement for LM3S1133-IQC50-A2T?
No official replacement part number is recorded in the lifecycle data. For a pin-compatible alternative within the same family, look at other Stellaris LM3S series MCUs with similar package and peripheral sets, but verify the exact footprint and firmware compatibility before substituting.