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| PartNumber | ATTINY45-20XUR | ATTINY45-20XU | ATTINY45-20XU SL561 |
| Description | 8-bit Microcontrollers - MCU 4KB FLSH 256B EE256B SRAM-20MHz, IND 5V | 8-bit Microcontrollers - MCU AVR 4K FLASH 256B EE & SRAM USI ADC 5V | AVR, 4K FLASH, 256B SRAM , USI, ADC, 5V - 20MHZ, SOIC - Rail/Tube (Alt: ATTINY45-20XU SL561) |
| Manufacturer | Microchip | Microchip | - |
| Product Category | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | - |
| RoHS | Y | Y | - |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Package / Case | TSSOP-8 | TSSOP-8 | - |
| Series | ATtiny45 | ATtiny45 | - |
| Core | AVR | AVR | - |
| Data Bus Width | 8 bit | 8 bit | - |
| Maximum Clock Frequency | 20 MHz | 20 MHz | - |
| Operating Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 85 C | + 85 C | - |
| Packaging | Reel | Tube | - |
| Height | 1.1 mm | 1.1 mm | - |
| Length | 4.4 mm | 4.4 mm | - |
| Product | MCU | MCU | - |
| Width | 3.05 mm | 3.05 mm | - |
| Brand | Microchip Technology / Atmel | Microchip Technology / Atmel | - |
| Moisture Sensitive | Yes | Yes | - |
| Processor Series | tinyAVR | tinyAVR | - |
| Product Type | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | - |
| Factory Pack Quantity | 5000 | 160 | - |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | - |
| Tradename | AVR | AVR | - |
| Unit Weight | 0.005573 oz | 0.005573 oz | - |
| Program Memory Size | - | 4 kB | - |
| Data RAM Size | - | 256 B | - |
| ADC Resolution | - | 10 bit | - |
| Number of I/Os | - | 6 I/O | - |
| Program Memory Type | - | Flash | - |
| Data RAM Type | - | SRAM | - |
| Data ROM Size | - | 256 B | - |
| Data ROM Type | - | EEPROM | - |
| Interface Type | - | USI | - |
| Number of ADC Channels | - | 6 | - |
| Number of Timers/Counters | - | 3 Timer | - |
| Supply Voltage Max | - | 5.5 V | - |
| Supply Voltage Min | - | 2.7 V | - |