| Core Processor | C251 |
| Core Size | 8/16-Bit |
| Speed | 16MHz |
| Connectivity | EBI/EMI, I²C, Microwire, SPI, UART/USART |
| RAM Size | 32 |
| Number of I/O | 32KB (32K x 8) |
| Program Memory Size | OTP |
| Program Memory Type | - |
| EEPROM Size | 1K x 8 |
| Voltage - Supply (Vcc/Vdd) | 4.5 V ~ 5.5 V |
| Data Converters | - |
| Oscillator Type | Internal |
| Operating Temperature | 0°C ~ 70°C |
| Package / Case | 44-LCC (J-Lead) |
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