| PartNumber | AT89LS52-16AU | AT89LS52-16AUR | AT89LS52-16AI |
| Description | 8-bit Microcontrollers - MCU LO-VLTG 8K ISP FLASH -16MHZ 2.7-5.5V | 8-bit Microcontrollers - MCU 16MHZ, TQFP44, IND TEMP, GREEN | 8-bit Microcontrollers - MCU LOW VOLTAGE 8K ISP FLASH - 16MHz |
| Manufacturer | Microchip | Microchip | Microchip |
| Product Category | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU |
| RoHS | Y | Y | N |
| Mounting Style | SMD/SMT | - | SMD/SMT |
| Package / Case | TQFP-44 | TQFP-44 | TQFP-44 |
| Series | 89LS | - | 89LS |
| Core | 8051 | - | 8051 |
| Data Bus Width | 8 bit | - | 8 bit |
| Maximum Clock Frequency | 16 MHz | - | 16 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 |
| Operating Supply Voltage | 2.7 V to 4 V | - | 2.7 V to 4 V |
| Minimum Operating Temperature | - 40 C | - | - 40 C |
| Maximum Operating Temperature | + 85 C | - | + 85 C |
| Packaging | Tray | Reel | - |
| Height | 1 mm | - | 1 mm |
| Length | 10 mm | - | 10 mm |
| Product | MCU | - | - |
| Program Memory Type | Flash | - | Flash |
| Width | 10 mm | - | 10 mm |
| Brand | Microchip Technology / Atmel | Microchip Technology / Atmel | Microchip Technology / Atmel |
| Interface Type | UART | - | ISP |
| Moisture Sensitive | Yes | - | - |
| Number of Timers/Counters | 3 Timer | - | 3 Timer |
| Processor Series | AT89x | - | - |
| Product Type | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU |
| Factory Pack Quantity | 160 | 2000 | 160 |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | Microcontrollers - MCU |
| Supply Voltage Max | 4 V | - | 4 V |
| Supply Voltage Min | 2.7 V | - | 2.7 V |
| Unit Weight | 0.009640 oz | - | - |