| PartNumber | ATTINY85-20SFR | ATTINY85-20SH | ATTINY85-20SF |
| Description | 8-bit Microcontrollers - MCU 4KB 256BADC 20MHZ GRN | 8-bit Microcontrollers - MCU 8K FLSH 256B EE 512B SRAM ADC 5V 20MHz | 8-bit Microcontrollers - MCU AVR 4KB FLASH 256B SRAM ADC 2 TIMERS |
| Manufacturer | Microchip | Microchip | Microchip |
| Product Category | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU |
| RoHS | Y | Y | Y |
| Package / Case | SOIC-8 | SOIC-8 | SOIC-8 |
| Series | ATtiny85 | ATtiny85 | ATtiny85 |
| Packaging | Reel | Tube | Tube |
| Brand | Microchip Technology / Atmel | Microchip Technology / Atmel | Microchip Technology / Atmel |
| Moisture Sensitive | Yes | Yes | Yes |
| Product Type | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU |
| Factory Pack Quantity | 2000 | 95 | 95 |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | Microcontrollers - MCU |
| Tradename | AVR | AVR | AVR |
| Mounting Style | - | SMD/SMT | SMD/SMT |
| Core | - | AVR | AVR |
| Data Bus Width | - | 8 bit | 8 bit |
| Maximum Clock Frequency | - | 20 MHz | 20 MHz |
| Program Memory Size | - | 8 kB | 8 kB |
| Data RAM Size | - | 512 B | 512 B |
| Number of I/Os | - | 6 I/O | 6 I/O |
| Operating Supply Voltage | - | 2.7 V to 5.5 V | 5.5 V |
| Minimum Operating Temperature | - | - 40 C | - 40 C |
| Maximum Operating Temperature | - | + 85 C | + 125 C |
| Height | - | 2.16 mm | - |
| Length | - | 5.35 mm | - |
| Product | - | MCU | - |
| Program Memory Type | - | Flash | Flash |
| Width | - | 5.4 mm | - |
| Data RAM Type | - | SRAM | SRAM |
| Interface Type | - | SPI, USI | I2C, SPI |
| Number of Timers/Counters | - | 2 Timer | 2 Timer |
| Processor Series | - | tinyAVR | tiny85 |
| Supply Voltage Max | - | 5.5 V | 5.5 V |
| Supply Voltage Min | - | 2.7 V | 1.8 V |
| Unit Weight | - | 0.019048 oz | 0.004388 oz |
| ADC Resolution | - | - | 10 bit |
| Data ROM Size | - | - | 512 B |
| Data ROM Type | - | - | EEPROM |
| Number of ADC Channels | - | - | 4 |