| PartNumber | ATTINY84-20MUR | ATTINY84-20PU | ATTINY84-20MU |
| Description | 8-bit Microcontrollers - MCU AVR 8KB FLSH 512B EE 512B SRAM-20MHz 5V | 8-bit Microcontrollers - MCU 8kB Flash 0.512kB EEPROM 12 I/O Pins | 8-bit Microcontrollers - MCU AVR 8K FLSH 512B SRAM 512B EE-5V |
| Manufacturer | Microchip | Microchip | Microchip |
| Product Category | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU |
| RoHS | Y | Y | Y |
| Package / Case | WQFN-20 | PDIP-14 | MLF-20 |
| Series | ATtiny84 | ATtiny84 | ATtiny84 |
| Core | AVR | AVR | AVR |
| Data Bus Width | 8 bit | 8 bit | 8 bit |
| Maximum Clock Frequency | 20 MHz | 20 MHz | 20 MHz |
| ADC Resolution | 10 bit | 10 bit | 10 bit |
| Operating Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V |
| Packaging | Reel | Tube | Tray |
| Product | MCU | MCU | MCU |
| Brand | Microchip Technology / Atmel | Microchip Technology / Atmel | Microchip Technology / Atmel |
| Processor Series | tinyAVR | tinyAVR | tinyAVR |
| Product Type | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU |
| Factory Pack Quantity | 6000 | 25 | 490 |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | Microcontrollers - MCU |
| Tradename | AVR | AVR | AVR |
| Mounting Style | - | Through Hole | SMD/SMT |
| Program Memory Size | - | 8 kB | 8 kB |
| Data RAM Size | - | 512 B | 512 B |
| Number of I/Os | - | 12 I/O | 12 I/O |
| Minimum Operating Temperature | - | - 40 C | - 40 C |
| Maximum Operating Temperature | - | + 85 C | + 85 C |
| Height | - | 5.33 mm | 0.74 mm |
| Length | - | 19.68 mm | 4 mm |
| Program Memory Type | - | Flash | Flash |
| Width | - | 7.11 mm | 4 mm |
| Data RAM Type | - | SRAM | SRAM |
| Data ROM Size | - | 512 B | 512 B |
| Data ROM Type | - | EEPROM | EEPROM |
| Interface Type | - | SPI | SPI |
| Number of ADC Channels | - | 8 | 12 |
| Number of Timers/Counters | - | 2 Timer | 2 Timer |
| Supply Voltage Max | - | 5.5 V | 5.5 V |
| Supply Voltage Min | - | 2.7 V | 2.7 V |
| Unit Weight | - | 0.057144 oz | 0.001309 oz |