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| SRAM | 4K |
| Data Flash | Configurable |
| LDROM | 2K |
| I/O | 18 |
| Timer | 4*32-bit |
| UART | 2 |
| PWM | 6*16-bit |
| ADC | 17*12-bit |
| Status | Mass Production |
| Comparator | 2 |
| ISP /ICP /IAP | Yes |
| DAC | 1*5-bit |
| Operating Temp. Range (°C ) | -40 to +125 |
| IRC | 10kHz， 48MHz |
| PDMA | 5 |
| LIN | 2 |
The NuMicro® M0A21 series is a 32-bit microcontroller based on Arm® Cortex®-M0 core.
