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| PartNumber | AT89LV55-12AC | AT89LV55-12JC | AT89LV55-12AI |
| Description | 8-bit Microcontrollers - MCU Microcontroller | IC MCU 8BIT 20KB FLASH 44PLCC | IC MCU 8BIT 20KB FLASH 44TQFP |
| Manufacturer | Microchip | - | - |
| Product Category | 8-bit Microcontrollers - MCU | - | - |
| RoHS | N | - | - |
| Mounting Style | SMD/SMT | - | - |
| Package / Case | TQFP-44 | - | - |
| Series | 89LV | - | - |
| Core | 8051 | - | - |
| Data Bus Width | 8 bit | - | - |
| Maximum Clock Frequency | 12 MHz | - | - |
| Program Memory Size | 20 kB | - | - |
| Data RAM Size | 256 B | - | - |
| ADC Resolution | No ADC | - | - |
| Number of I/Os | 32 I/O | - | - |
| Operating Supply Voltage | 2.7 V to 6 V | - | - |
| Minimum Operating Temperature | 0 C | - | - |
| Maximum Operating Temperature | + 70 C | - | - |
| Height | 1 mm | - | - |
| Length | 10 mm | - | - |
| Product | MCU | - | - |
| Program Memory Type | Flash | - | - |
| Width | 10 mm | - | - |
| Brand | Microchip Technology / Atmel | - | - |
| Interface Type | UART | - | - |
| Number of Timers/Counters | 3 Timer | - | - |
| Product Type | 8-bit Microcontrollers - MCU | - | - |
| Factory Pack Quantity | 160 | - | - |
| Subcategory | Microcontrollers - MCU | - | - |
| Supply Voltage Max | 6 V | - | - |
| Supply Voltage Min | 2.7 V | - | - |