TI LM3S8538-EQC50-A2 — Stellaris ARM Cortex-M3 MCU, 50MHz, Ethernet, 96KB Flash,
Texas Instruments Stellaris LM3S8538-EQC50-A2, ARM Cortex-M3 50MHz single-core MCU, 96KB Flash / 64KB SRAM, integrated Ethernet MAC and CANbus, 8-channel 10-bit ADC, 36 I/O, 2.25–2.75V supply, -40 to 105°C, surface-mount 100-LQFP in tray.
Specifications
| Parameter | Value |
|---|---|
| Series | Stellaris® ARM® Cortex®-M3S 8000 |
| Mounting | Surface Mount |
| Oscillator type | Internal |
| Program memory type | FLASH |
| Voltage - supply (Vcc (Vdd)) | 2.25V ~ 2.75V |
| Operating temperature | -40°C~105°C(TA) |
| Speed | 50MHz |
| Package | Tray |
| RAM size | 64K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Connectivity | CANbus, Ethernet, I²C, IrDA, Microwire, SPI, SSI, UART/USART |
| Number of i (O) | 36 |
| Core processor | ARM® Cortex®-M3 |
| Case | 100-LQFP |
| Data converters | A/D 8x10b |
| Program memory size | 96KB (96K x 8) |
Frequently asked questions
What replaces the LM3S8538-EQC50-A2?
TI's official successor line is the Tiva C Series TM4C family, but the TM4C parts in this performance tier are not pin-compatible drops into the 100-LQFP footprint — a PCB respin is required. No officially cross-referenced second-source or direct substitute appears in this record.
Does the LM3S8538-EQC50-A2 need an external Ethernet PHY?
The part integrates the Ethernet MAC; an external PHY transceiver is required for any RJ-45 link. The CANbus controller similarly requires an external CAN transceiver. Both are standard BOM components for this connectivity block.
What is the supply voltage range, and does it interface directly with 5V logic?
The LM3S8538-EQC50-A2 operates from 2.25V to 2.75V. It is not a 5V-tolerant MCU — any 5V discrete I/O lines interfacing to this part need level-shifting explicitly designed into the schematic.