| PartNumber | AT89C4051-24SI | AT89C4051-24SC | AT89C4051-24SJ |
| Description | 8-bit Microcontrollers - MCU 4K FLASH 2.7 TO 5.5V 24MHZ IND TEMP | IC MCU 8BIT 4KB FLASH 20SOIC | IC MCU 8BIT 4KB FLASH 20SOIC |
| Manufacturer | Microchip | - | - |
| Product Category | 8-bit Microcontrollers - MCU | - | - |
| RoHS | N | - | - |
| Mounting Style | SMD/SMT | - | - |
| Package / Case | SOIC-20 | - | - |
| Series | Microcontroller | - | - |
| 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 | 15 I/O | - | - |
| Operating Supply Voltage | 2.7 V to 6 V | - | - |
| Minimum Operating Temperature | - 40 C | - | - |
| Maximum Operating Temperature | + 85 C | - | - |
| Height | 2.35 mm | - | - |
| Length | 13 mm | - | - |
| Program Memory Type | Flash | - | - |
| Width | 7.6 mm | - | - |
| Brand | Microchip Technology / Atmel | - | - |
| Data ROM Type | Flash | - | - |
| Interface Type | UART | - | - |
| Number of Timers/Counters | 2 Timer | - | - |
| Product Type | 8-bit Microcontrollers - MCU | - | - |
| Factory Pack Quantity | 38 | - | - |
| Subcategory | Microcontrollers - MCU | - | - |
| Supply Voltage Max | 6 V | - | - |
| Supply Voltage Min | 4 V | - | - |
| Unit Weight | 0.028254 oz | - | - |