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| PartNumber | AT89C51-24PC | AT89C51-24PA | AT89C51-24PC 0126 |
| Description | 8-bit Microcontrollers - MCU 80C31 w/4k | ||
| Manufacturer | Microchip | - | - |
| Product Category | 8-bit Microcontrollers - MCU | - | - |
| RoHS | N | - | - |
| Mounting Style | Through Hole | - | - |
| Package / Case | PDIP-40 | - | - |
| Series | 89C | - | - |
| Core | 8051 | - | - |
| Data Bus Width | 8 bit | - | - |
| Maximum Clock Frequency | 24 MHz | - | - |
| Program Memory Size | 4 kB | - | - |
| Data RAM Size | 128 B | - | - |
| ADC Resolution | No ADC | - | - |
| Number of I/Os | 32 I/O | - | - |
| Operating Supply Voltage | 5 V | - | - |
| Minimum Operating Temperature | 0 C | - | - |
| Maximum Operating Temperature | + 70 C | - | - |
| Height | 4.83 mm | - | - |
| Length | 52.58 mm | - | - |
| Product | MCU | - | - |
| Program Memory Type | Flash | - | - |
| Width | 13.97 mm | - | - |
| Brand | Microchip Technology / Atmel | - | - |
| Data ROM Type | Flash | - | - |
| Number of Timers/Counters | 2 Timer | - | - |
| Product Type | 8-bit Microcontrollers - MCU | - | - |
| Factory Pack Quantity | 9 | - | - |
| Subcategory | Microcontrollers - MCU | - | - |
| Supply Voltage Max | 6 V | - | - |
| Supply Voltage Min | 4 V | - | - |
| Unit Weight | 0.210004 oz | - | - |