80 MHz Cortex-M3 with 512 KB Flash — what it means for the BOM
The LM3S5D91-IBZ80-A1T is a Texas Instruments Stellaris ARM Cortex-M3 MCU running at 80 MHz, with 512 KB of Flash and 96 KB of SRAM.
LM3S5D91-IBZ80-A1T Stellaris ARM Cortex-M3 MCU, 80 MHz, 512 KB Flash
MPNLM3S5D91-IBZ80-A1T
Obsolete
Texas Instruments Stellaris ARM Cortex-M3S 5000 series 32-bit MCU, LM3S5D91-IBZ80-A1T, 80 MHz, 512 KB Flash, 96 KB SRAM, 72 I/O, CAN, USB OTG, 108-BGA, -40 to 85 °C.
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026
Specifications
| Parameter | Value |
|---|---|
| Series | Stellaris® ARM® Cortex®-M3S 5000 |
| Mounting | Surface Mount |
| Oscillator type | Internal |
| Program memory type | FLASH |
| Voltage - supply (Vcc (Vdd)) | 3V ~ 3.6V |
| Operating temperature | -40°C~85°C(TA) |
| Speed | 80MHz |
| Package | Tape & Reel (TR) |
| RAM size | 96K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT |
| Connectivity | CANbus, EBI/EMI, I²C, IrDA, LINbus, Microwire, QEI, SPI, SSI, UART/USART, USB OTG |
| Number of i (O) | 72 |
| Core processor | ARM® Cortex®-M3 |
| Case | 108-LFBGA |
| Data converters | A/D 16x12b |
| Program memory size | 512KB (512K x 8) |
Product details
Frequently asked questions
What is LM3S5D91-IBZ80-A1T's core speed?
The core runs at 80 MHz, based on an ARM Cortex-M3 processor.
What is the operating temperature range for LM3S5D91-IBZ80-A1T?
It is rated for -40 to 85 °C ambient, covering most industrial and outdoor applications.