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