32-bit ARM Cortex-M3 microcontroller featuring an 80MHz core speed and 128KB of FLASH memory. This QFN-packaged MCU offers 32KB RAM, 28 I/Os, and 65 programmable I/Os, alongside peripherals including DMA, PWM, and a watchdog timer. Operating from -40°C to 85°C with a maximum supply voltage of 3.6V, it supports USB connectivity and includes 2 timers/counters.
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| Package/Case | QFN |
| Core Architecture | ARM |
| Data Bus Width | 32b |
| Lead Free | Lead Free |
| Max Frequency | 80MHz |
| Max Operating Temperature | 85°C |
| Min Operating Temperature | -40°C |
| Max Power Dissipation | 650mW |
| Max Supply Voltage | 3.6V |
| Memory Size | 128KB |
| Memory Type | FLASH, |
| Number of Channels | 10 |
| Number of I/Os | 28 |
| Number of Programmable I/O | 65 |
| Number of Timers/Counters | 2 |
| Oscillator Type | Internal |
| Package Quantity | 490 |
| Packaging | Tray |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT, DMA |
| RAM Size | 32KB |
| RoHS Compliant | Yes |
| Series | SiM3U1xx |
| Watchdog Timer | Yes |
| RoHS | Compliant |
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