- Core processor: AVR
- 2.Core size: 8-bit
- 3.Speed: 20MHz
- 4.Connectivity : I²C, SPI, UART / USART
- 5.Peripheral: Undervoltage detection / reset, POR，PWM，WDT.
- I/O number: 23.
- 7.Program storage capacity: 32KB（16K x 16）
- 8.Program memory type: Flash memory.
- 9.EEPROM capacity: 1K x 8
- 10.RAM capacity: 2K x 8
- 11.Vcc/Vdd: 1.8 V ~ 5.5 V
- Operating temperature: -40°C ~ 85°C
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