| Part Number | LM3S6637-EQC50-A2T | LM3S6637-IQC50-A2T | 
|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | 
| Category | Embedded - Microcontrollers | Embedded - Microcontrollers | 
|   |   | |
| Product Status | Obsolete | Obsolete | 
| Core Processor | ARM® Cortex®-M3 | ARM® Cortex®-M3 | 
| Core Size | 32-Bit Single-Core | 32-Bit Single-Core | 
| Speed | 50MHz | 50MHz | 
| Connectivity | Ethernet, I²C, IrDA, Microwire, SPI, SSI, UART/USART | Ethernet, I²C, IrDA, Microwire, SPI, SSI, UART/USART | 
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT | Brown-out Detect/Reset, POR, PWM, WDT | 
| Number of I/O | 41 | 41 | 
| Program Memory Size | 128KB (128K x 8) | 128KB (128K x 8) | 
| Program Memory Type | Flash | Flash | 
| EEPROM Size | - | - | 
| RAM Size | 32K x 8 | 32K x 8 | 
| Voltage - Supply (Vcc/Vdd) | 2.25V ~ 2.75V | 2.25V ~ 2.75V | 
| Data Converters | A/D 4x10b | A/D 4x10b | 
| Oscillator Type | Internal | Internal | 
| Operating Temperature | -40°C ~ 105°C (TA) | -40°C ~ 85°C (TA) | 
| Mounting Type | Surface Mount | Surface Mount | 
| Package / Case | 100-LQFP | 100-LQFP | 
| Supplier Device Package | 100-LQFP (14x14) | 100-LQFP (14x14) |