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| SRAM | 20K |
| Data Flash | Configurable |
| LDROM | 4K |
| I/O | 20 |
| Timer | 4*32-bit |
| UART | 1 |
| SPI | 3 |
| I2C | 1 |
| PWM | 2*16-bit |
| Status | Mass Production |
| ISP /ICP /IAP | Yes |
| Operating Temp. Range (°C ) | -40 to +105 |
| IRC | 22 MHz |
| USB | 1 |
| CRC | Y |
| I2S/ AC97 | 1 |
| PDMA | 6 |
The NUC120/123/220 series operates at 2.5V ~ 5.5V and - 40 ℃ ~ 105 ℃.

