| PartNumber | AT89C52-33AI | AT89C52-33PI |
| Description | 8-bit Microcontrollers - MCU Microcontroller | 8-bit Microcontrollers - MCU Microcontroller |
| Manufacturer | Microchip | Microchip |
| Product Category | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU |
| RoHS | N | N |
| Mounting Style | SMD/SMT | Through Hole |
| Package / Case | TQFP-44 | PDIP-40 |
| Series | 89C | 89C |
| Core | 8051 | 8051 |
| Data Bus Width | 8 bit | 8 bit |
| Maximum Clock Frequency | 33 MHz | 33 MHz |
| Program Memory Size | 8 kB | 8 kB |
| Data RAM Size | 256 B | 256 B |
| ADC Resolution | No ADC | No ADC |
| Number of I/Os | 32 I/O | 32 I/O |
| Minimum Operating Temperature | - 40 C | - 40 C |
| Maximum Operating Temperature | + 85 C | + 85 C |
| Height | 1.05 mm | 3.94 mm |
| Length | 10.1 mm | 52.6 mm |
| Program Memory Type | Flash | Flash |
| Width | 10.1 mm | 14.4 mm |
| Brand | Microchip Technology / Atmel | Microchip Technology / Atmel |
| Number of Timers/Counters | 3 Timer | 3 Timer |
| Product Type | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU |
| Factory Pack Quantity | 160 | 9 |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU |
| Supply Voltage Max | 6 V | 6 V |
| Supply Voltage Min | 4 V | 4 V |
| Unit Weight | - | 0.210004 oz |