 |  | | |
| PartNumber | W78IRD2A | W78IRD2A25PL | W78IRD2A25DL |
| Description | IC MCU 8BIT 64KB FLASH 44PLCC | IC MCU 8BIT 64KB FLASH 40DIP | |
| 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 | W78 | W78 | W78 |
| Packaging | Tube | Tube | Tube |
| Package Case | 40-DIP | 44-LCC (J-Lead) | 40-DIP |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Supplier Device Package | * | * | * |
| Number of I O | 32 | 36 | 32 |
| Speed | 25MHz | 25MHz | 25MHz |
| EEPROM Size | - | - | - |
| Core Processor | 80C52 | 80C52 | 80C52 |
| RAM Size | 1.25K x 8 | 1.25K x 8 | 1.25K x 8 |
| Program Memory Type | FLASH | FLASH | FLASH |
| Peripherals | POR, PWM, WDT | POR, PWM, WDT | POR, PWM, WDT |
| Connectivity | EBI/EMI, UART/USART | EBI/EMI, UART/USART | EBI/EMI, UART/USART |
| Voltage Supply Vcc Vdd | 4.5 V ~ 5.5 V | 4.5 V ~ 5.5 V | 4.5 V ~ 5.5 V |
| Core Size | 8-Bit | 8-Bit | 8-Bit |
| Program Memory Size | 64KB (64K x 8) | 64KB (64K x 8) | 64KB (64K x 8) |
| Data Converters | - | - | - |
| Oscillator Type | Internal | Internal | Internal |