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| PartNumber | W79E225ALG | W79E225APG | W79E226ALG |
| Description | IC MCU 8BIT 16KB FLASH 48LQFP | IC MCU 8BIT 16KB FLASH 44PLCC | IC MCU 8BIT 32KB FLASH 48LQFP |
| Manufacturer | Nuvoton Technology Corporation of America | Nuvoton Technology Corporation of America | Nuvoton Technology Corporation of America |
| Product Category | Embedded - Microcontrollers | Embedded - Microcontrollers | Embedded - Microcontrollers |
| Series | W79 | W79 | W79 |
| Packaging | Tray | Tube | Tray |
| Package Case | 48-LQFP | 44-LCC (J-Lead) | 48-LQFP |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Supplier Device Package | * | * | * |
| Number of I O | 38 | 38 | 38 |
| Speed | 40MHz | 40MHz | 40MHz |
| EEPROM Size | 1K x 8 | 1K x 8 | 2K x 8 |
| Core Processor | 8051/52 | 8051/52 | 8051/52 |
| RAM Size | 1.25K x 8 | 1.25K x 8 | 2.25K x 8 |
| Program Memory Type | FLASH | FLASH | FLASH |
| Peripherals | POR, PWM, WDT | POR, PWM, WDT | POR, PWM, WDT |
| Connectivity | EBI/EMI, I2C, SPI, UART/USART | EBI/EMI, I2C, SPI, UART/USART | EBI/EMI, I2C, SPI, UART/USART |
| Voltage Supply Vcc Vdd | 2.7 V ~ 5.5 V | 2.7 V ~ 5.5 V | 2.7 V ~ 5.5 V |
| Core Size | 8-Bit | 8-Bit | 8-Bit |
| Program Memory Size | 16KB (16K x 8) | 16KB (16K x 8) | 32KB (32K x 8) |
| Data Converters | A/D 8x10b | A/D 8x10b | A/D 8x10b |
| Oscillator Type | Internal | Internal | Internal |