| PartNumber | DS89C420-MCS | DS89C420-MNL | DS89C420-MCL |
| Description | IC MCU 8BIT 16KB FLASH 40DIP | IC MCU 8BIT 16KB FLASH 40DIP | IC MCU 8BIT 16KB FLASH 40DIP |
| Manufacturer | - | Maxim Integrated | - |
| Product Category | - | Embedded - Microcontrollers | - |
| Series | - | 89C | - |
| Packaging | - | Tube | - |
| Package Case | - | 40-DIP (0.600", 15.24mm) | - |
| Operating Temperature | - | -40°C ~ 85°C (TA) | - |
| Supplier Device Package | - | 40-PDIP | - |
| Number of I O | - | 32 | - |
| Speed | - | 33MHz | - |
| EEPROM Size | - | - | - |
| Core Processor | - | 8051 | - |
| RAM Size | - | 1K x 8 | - |
| Program Memory Type | - | FLASH | - |
| Peripherals | - | Power-Fail Reset, WDT | - |
| Connectivity | - | EBI/EMI, SIO, UART/USART | - |
| Voltage Supply Vcc Vdd | - | 4.5 V ~ 5.5 V | - |
| Core Size | - | 8-Bit | - |
| Program Memory Size | - | 16KB (16K x 8) | - |
| Data Converters | - | - | - |
| Oscillator Type | - | External | - |