Memory partition and Ethernet buffer planning
96 KB Flash holds firmware and a TCP/IP stack. 32 KB RAM is shared between heap, DMA descriptors, and packet buffers.
Supply range and power sequencing
Brown-out detect is built in.
LM3S6432-IQC50-A2 Stellaris ARM Cortex-M3 MCU, 50 MHz, 96 KB Flash
MPNLM3S6432-IQC50-A2
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Texas Instruments Stellaris ARM Cortex-M3 MCU, LM3S6432-IQC50-A2, 32-Bit Single-Core 50 MHz, 96 KB Flash, 32K x 8 RAM, Ethernet/I²C/SPI/UART, 43 I/O, 100-LQFP, -40 to 85 °C.
$49.4000Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026
Specifications
| Parameter | Value |
|---|---|
| Series | Stellaris® ARM® Cortex®-M3S 6000 |
| 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 | Tray |
| RAM size | 32K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Connectivity | Ethernet, I²C, IrDA, Microwire, SPI, SSI, UART/USART |
| Number of i (O) | 43 |
| Core processor | ARM® Cortex®-M3 |
| Case | 100-LQFP |
| Data converters | A/D 3x10b |
| Program memory size | 96KB (96K x 8) |
Product details
Frequently asked questions
What is the closest pin-compatible alternative to LM3S6432-IQC50-A2?
No pin-compatible successor is listed in the available records. A cross-ship evaluation against a current-generation Cortex-M4 MCU with Ethernet MAC is recommended before committing a new BOM.
What is LM3S6432-IQC50-A2's listed speed?
The core runs at 50 MHz, which is the Cortex-M3's rated maximum for this device.