Texas Instruments Stellaris ARM Cortex-M3S 5000 series 32-bit MCU, LM3S5G51-IBZ80-A2, 80 MHz, 384 KB Flash, 64K x 8 RAM, CAN, USB OTG, 67 I/O, 108-BGA, -40°C to 85°C.
| 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 | Tray |
| RAM size | 64K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT |
| Connectivity | CANbus, I²C, IrDA, LINbus, Microwire, QEI, SPI, SSI, UART/USART, USB OTG |
| Number of i (O) | 67 |
| Core processor | ARM® Cortex®-M3 |
| Case | 108-LFBGA |
| Data converters | A/D 16x12b |
| Program memory size | 384KB (384K x 8) |
The LM3S5G51-IBZ80-A2 is a 32-bit ARM Cortex-M3 microcontroller from the Stellaris 5000 series, clocked at 80 MHz with 384 KB of Flash and 64K x 8 of SRAM.
The LM3S5G51-IBZ80-A2 is marked obsolete by the manufacturer. The Stellaris family was acquired by TI and largely superseded by the Tiva C Series and later TM4C12x parts, but those are not pin-compatible drop-ins.
No official successor order code is listed in the lifecycle record. The Stellaris family has been superseded by TI's Tiva C Series and TM4C12x parts, but those are not pin-compatible drop-ins. A design migration requires a board respin and firmware port.
Yes, this MCU integrates both a CAN 2.0B controller and a USB OTG interface, plus I²C, SPI, UART/USART, LINbus, and other serial protocols on the same die.
The operating temperature range is -40°C to 85°C, which is the industrial temperature grade. Suitable for factory-floor, outdoor telecom, and engine-bay environments.
This obsolete part is sourced through independent distribution channels. Sourced and quoted to order against an RFQ; availability and current pricing confirmed at quote time.