32-bit ARM Cortex-M3S 2000 series microcontroller featuring a 50MHz core frequency. This surface mount device offers 256KB FLASH and 64KB RAM memory. Integrated peripherals include I2C, SPI, CAN, UART, IrDA, and USART interfaces, along with 5 timers/counters and 3 UART channels. Operating voltage is 3.3V, with a temperature range of -40°C to 85°C. The LQFP package contains 57 I/Os and includes a watchdog timer.
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Texas Instruments LM3S2939-IQC50-A2T technical specifications.
| Package/Case | LQFP |
| Core Architecture | ARM |
| Data Bus Width | 32b |
| Frequency | 50MHz |
| Interface | I2C, SPI, CAN, UART, IrDA, USART |
| Lead Free | Lead Free |
| Length | 14mm |
| Max Frequency | 50MHz |
| Max Operating Temperature | 85°C |
| Min Operating Temperature | -40°C |
| Max Supply Voltage | 3.6V |
| Memory Size | 256KB |
| Memory Type | FLASH, |
| Min Supply Voltage | 3V |
| Mount | Surface Mount |
| Number of A/D Converters | 1 |
| Number of I/Os | 57 |
| Number of Programmable I/O | 57 |
| Number of Timers/Counters | 5 |
| Number of UART Channels | 3 |
| Operating Supply Voltage | 3.3V |
| Oscillator Type | Internal |
| Package Quantity | 1000 |
| Packaging | Tape and Reel |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Radiation Hardening | No |
| RAM Size | 64KB |
| RoHS Compliant | Yes |
| Series | Stellaris® ARM® Cortex®-M3S 2000 |
| Watchdog Timer | Yes |
| RoHS | Compliant |
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