Core | Operating voltage (V) | Max frequency (MHz) | GPIO | Flash (B) | RAM (B) | EEPROM (B) | ADC | LVD | LVR | 8051 | 2.5~5.5 | 24 | 5 | 32K | 2K+256 | 1k | 3x12bit | Y | Y | RCH | RCL | XTH | LPTimer | WDT | Timer | PWM | UART | SPI | I2C | Y | Y | Y | 1 | 1 | 3 | "5 (1 pair *)" | 4 | 1 | 1 | Buzzer | Anti-Copy | Package | 1 | Y | SOP8 |
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