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| Lead Time | 20 Weeks , 20 Weeks , 20 Weeks , 20 Weeks , 20 Weeks |
| Flash | 256K , 256K , 256K , 256K , 256K |
| SRAM | 168K , 168K , 168K , 168K , 168K |
| Data Flash | Configurable , Configurable , Configurable , Configurable , Configurable |
| LDROM | 8K , 8K , 8K , 8K , 8K |
| I/O | 41 , 41 , 41 , 41 , 41 |
| Timer | 4*32-bit , 4*32-bit , 4*32-bit , 4*32-bit , 4*32-bit |
| UART | 8 , 8 , 8 , 8 , 8 |
| I2C | 4 , 4 , 4 , 4 , 4 |
| PWM | 24*16-bit , 24*16-bit , 24*16-bit , 24*16-bit , 24*16-bit |
| ADC | 16 , 16 , 16 , 16 , 16 |
| ISP/ICP/IAP | Yes , Yes , Yes , Yes , Yes |
| Package | QFN48 , QFN48 , QFN48 , QFN48 , QFN48 |
| Status | Mass Production , Mass Production , Mass Production , Mass Production , Mass Production |
| Comparator | 3 , 3 , 3 , 3 , 3 |
| RTC | Y(Vbat) , Y(Vbat) , Y(Vbat) , Y(Vbat) , Y(Vbat) |
| DAC | 2*12-bit , 2*12-bit , 2*12-bit , 2*12-bit , 2*12-bit |
| Operating Temp. Range (°C ) | -40 to +105 , -40 to +105 , -40 to +105 , -40 to +105 , -40 to +105 |
| PDMA | 16 , 16 , 16 , 16 , 16 |
| EBI | Yes , Yes , Yes , Yes , Yes |
| LIN | 2 , 2 , 2 , 2 , 2 |
| CAN | 2 , 2 , 2 , 2 , 2 |
| SPI / I2S | 4 , 4 , 4 , 4 , 4 |
| USB Device | Y , Y , Y , Y , Y |
| Voltage Adjustable Interface | Y , Y , Y , Y , Y |
| Quad SPI | 1 , 1 , 1 , 1 , 1 |
| USB OTG | Y , Y , Y , Y , Y |
| USB Host | Y , Y , Y , Y , Y |
| Touch Key | 12 , 12 , 12 , 12 , 12 |
| Tamper Detect (pin) | 3 , 3 , 3 , 3 , 3 |
| QEI | 2 , 2 , 2 , 2 , 2 |
| OP Amp. | 3 , 3 , 3 , 3 , 3 |
| Crypto | Y , Y , Y , Y , Y |
| TRNG | Y , Y , Y , Y , Y |
| DES/ 3-DES / AES | Y , Y , Y , Y , Y |
The NuMicro M2L31 series is based on Arm Cortex-M23 core at Armv8-M architecture with a single cycle hardware multiplier/divider.
