| PartNumber | AT89S53-24AI | AT89S53-24JC | AT89S53-24AC |
| Description | 8-bit Microcontrollers - MCU 12K Flash | 8-bit Microcontrollers - MCU w/12k | 8-bit Microcontrollers - MCU Microcontroller |
| Manufacturer | Microchip | Microchip | Microchip |
| Product Category | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU |
| RoHS | N | N | N |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | TQFP-44 | PLCC-44 | TQFP-44 |
| Series | Microcontroller | Microcontroller | 89S |
| Core | 8051 | 8051 | 8051 |
| Data Bus Width | 8 bit | 8 bit | 8 bit |
| Maximum Clock Frequency | 24 MHz | 24 MHz | 24 MHz |
| Program Memory Size | 12 kB | 12 kB | 12 kB |
| Data RAM Size | 256 B | 256 B | 256 B |
| ADC Resolution | No ADC | No ADC | No ADC |
| Number of I/Os | 32 I/O | 32 I/O | 32 I/O |
| Operating Supply Voltage | 4 V to 6 V | 4 V to 6 V | 4 V to 6 V |
| Minimum Operating Temperature | - 40 C | 0 C | 0 C |
| Maximum Operating Temperature | + 85 C | + 70 C | + 70 C |
| Height | 1.05 mm | 3.48 mm | 1.05 mm |
| Length | 10 mm | 16.7 mm | 10 mm |
| Product | MCU | MCU | MCU |
| Program Memory Type | Flash | Flash | Flash |
| Width | 10 mm | 16.7 mm | 10 mm |
| Brand | Microchip Technology / Atmel | Microchip Technology / Atmel | Microchip Technology / Atmel |
| Data ROM Type | Flash | Flash | - |
| Interface Type | SPI, UART | SPI, UART | SPI, UART |
| Number of Timers/Counters | 3 Timer | 3 Timer | 3 Timer |
| Product Type | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU |
| Factory Pack Quantity | 160 | 27 | 160 |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | Microcontrollers - MCU |
| Supply Voltage Max | 6 V | 6 V | 6 V |
| Supply Voltage Min | 4 V | 4 V | 4 V |
| Unit Weight | - | 0.084185 oz | - |