| PartNumber | ATTINY261A-MFR | ATTINY261A-MN | ATTINY261A-MF |
| Description | 8-bit Microcontrollers - MCU AVR 2KB FLASH 128BEE | 8-bit Microcontrollers - MCU AVR 2KB FLSH 128B EE 128B SRAM-20MHz 105C | 8-bit Microcontrollers - MCU AVR 2KB FLASH 128BEE |
| Manufacturer | Microchip | Microchip | Microchip |
| Product Category | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU |
| RoHS | Y | Y | Y |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | MLF-32 | MLF-32 | MLF-32 |
| Series | ATtinyx61A | ATtinyx61A | ATtinyx61A |
| Core | AVR | AVR | AVR |
| Data Bus Width | 8 bit | 8 bit | 8 bit |
| Maximum Clock Frequency | 20 MHz | 20 MHz | 20 MHz |
| Program Memory Size | 2 kB | 2 kB | 2 kB |
| Data RAM Size | 128 B | 128 B | 128 B |
| Operating Supply Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| Minimum Operating Temperature | - 40 C | - 40 C | - 40 C |
| Maximum Operating Temperature | + 85 C | + 105 C | + 85 C |
| Packaging | Reel | Tray | Tray |
| Program Memory Type | Flash | Flash | Flash |
| Brand | Microchip Technology / Atmel | Microchip Technology / Atmel | Microchip Technology / Atmel |
| Data ROM Size | 128 B | 128 B | 128 B |
| Data ROM Type | EEPROM | EEPROM | EEPROM |
| Interface Type | SPI | SPI, USI | SPI |
| Moisture Sensitive | Yes | Yes | - |
| Number of Timers/Counters | 2 Timer | 2 Timer | 2 Timer |
| Product Type | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU |
| Factory Pack Quantity | 6000 | 490 | 490 |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | Microcontrollers - MCU |
| Tradename | AVR | AVR | AVR |
| ADC Resolution | - | 10 bit | - |
| Number of I/Os | - | 16 I/O | - |
| Product | - | MCU | - |
| Data RAM Type | - | SRAM | - |
| Number of ADC Channels | - | 11 | - |
| Processor Series | - | tinyAVR | - |
| Supply Voltage Max | - | 5.5 V | - |
| Supply Voltage Min | - | 1.8 V | - |