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| PartNumber | W79E822ADG | W79E822ASG | W79E822BDG |
| Description | IC MCU 8BIT 2KB FLASH 20DIP | IC MCU 8BIT 2KB FLASH 20SOIC | |
| Manufacturer | - | Nuvoton Technology Corporation of America | NUVOTON |
| Product Category | - | Embedded - Microcontrollers | IC Chips |
| Series | - | W79 | - |
| Packaging | - | Tube | - |
| Package Case | - | 20-SOIC (0.295", 7.50mm Width) | - |
| Operating Temperature | - | -40°C ~ 85°C (TA) | - |
| Supplier Device Package | - | * | - |
| Number of I O | - | 18 | - |
| Speed | - | 20MHz | - |
| EEPROM Size | - | - | - |
| Core Processor | - | 8051 | - |
| RAM Size | - | 128 x 8 | - |
| Program Memory Type | - | FLASH | - |
| Peripherals | - | Brown-out Detect/Reset, LED, LVD, POR, PWM, WDT | - |
| Connectivity | - | I2C, UART/USART | - |
| Voltage Supply Vcc Vdd | - | 2.7 V ~ 5.5 V | - |
| Core Size | - | 8-Bit | - |
| Program Memory Size | - | 2KB (2K x 8) | - |
| Data Converters | - | A/D 4x10b | - |
| Oscillator Type | - | Internal | - |