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| SRAM | 256+1K |
| Data Flash | 4K |
| LDROM | 2.5K |
| I/O | 40 |
| Timer | 3*16-bit |
| UART | 1 |
| SPI | 1 |
| PWM | 5*8-bit |
| ISP/ICP/IAP | Yes |
| Status | Mass Production |
| INT | 4 |
| Special Function | 6T/12T option， Extra I/O port， internal 22 MHz RC，4 level BOR |
The Nuvoton standard 8051 series is pin-compatible with traditional 12T 8051 and operating at 2.4V ~ 5.5V and - 40 ℃ ~ 85 ℃.
