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| PartNumber | DS89C450-QNL+ | DS89C450-ENG+ | DS89C450 |
| Description | 8-bit Microcontrollers - MCU Ultra-High-Speed Flash MCU | 8-bit Microcontrollers - MCU Ultra-High-Speed Flash MCU | |
| Manufacturer | Maxim Integrated | Maxim Integrated | DALLAS |
| Product Category | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | IC Chips |
| RoHS | Y | Y | - |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Package / Case | PLCC-44 | TQFP-44 | - |
| Series | DS89C450 | DS89C450 | - |
| Core | 8051 | 8051 | - |
| Data Bus Width | 8 bit | 8 bit | - |
| Maximum Clock Frequency | 33 MHz | 25 MHz | - |
| Program Memory Size | 64 kB | 64 kB | - |
| Data RAM Size | 1 kB | 1 kB | - |
| ADC Resolution | No ADC | No ADC | - |
| Number of I/Os | 4 I/O | 4 I/O | - |
| Operating Supply Voltage | 4.5 V to 5.5 V | 4.5 V to 5.5 V | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 85 C | + 85 C | - |
| Packaging | Tube | Tube | - |
| Height | 3.68 mm | 1.05 mm | - |
| Length | 16.66 mm | 10 mm | - |
| Program Memory Type | Flash | Flash | - |
| Width | 16.66 mm | 10 mm | - |
| Brand | Maxim Integrated | Maxim Integrated | - |
| Data RAM Type | SRAM | SRAM | - |
| Interface Type | UART | UART | - |
| Development Kit | DS89C450-KIT# | DS89C450-KIT# | - |
| Moisture Sensitive | Yes | Yes | - |
| Number of Timers/Counters | 3 Timer | 3 Timer | - |
| Processor Series | DS89C450 | DS89C450 | - |
| Product Type | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | - |
| Factory Pack Quantity | 28 | 160 | - |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | - |
| Supply Voltage Max | 5.5 V | 5.5 V | - |
| Supply Voltage Min | 4.5 V | 4.5 V | - |
| Part # Aliases | 90-89450+QNL DS89C450 | 90-89450+ENG DS89C450 | - |
| Unit Weight | 0.084185 oz | - | - |