| PartNumber | DS89C440-ENL | DS89C440-ENG | DS89C440-MNG |
| Description | IC MCU 8BIT 32KB FLASH 44TQFP | IC MCU 8BIT 32KB FLASH 44TQFP | IC MCU 8BIT 32KB FLASH 40DIP |
| Manufacturer | Maxim Integrated | - | - |
| Product Category | Embedded - Microcontrollers | - | - |
| Series | 89C | - | - |
| Packaging | Tray | - | - |
| Package Case | 44-TQFP | - | - |
| Operating Temperature | -40°C ~ 85°C (TA) | - | - |
| Supplier Device Package | 44-TQFP (10x10) | - | - |
| 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 | 32KB (32K x 8) | - | - |
| Data Converters | - | - | - |
| Oscillator Type | External | - | - |