8-bit AVR RISC microcontroller featuring 2KB Flash program memory and 128B RAM. This surface-mount device operates at up to 20 MHz, with 16 programmable I/Os and two timers. It includes an 11-channel ADC and SPI interface, housed in a 20-pin TSSOP package with gull-wing leads. Supports 2.5V, 3.3V, and 5V operation with a maximum supply voltage of 5.5V, operating from -40°C to 85°C.
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Microchip ATtiny261A-XU technical specifications.
| Basic Package Type | Lead-Frame SMT |
| Package Family Name | SOP |
| Package/Case | TSSOP |
| Package Description | Thin Shrink Small Outline Package |
| Lead Shape | Gull-wing |
| Pin Count | 20 |
| PCB | 20 |
| Package Length (mm) | 6.6(Max) |
| Package Width (mm) | 4.48(Max) |
| Package Height (mm) | 0.95(Max) |
| Mounting | Surface Mount |
| Family Name | ATtiny |
| Data Bus Width | 8bit |
| Instruction Set Architecture | RISC |
| Maximum Clock Rate | 20MHz |
| Maximum CPU Frequency | 20MHz |
| Device Core | AVR |
| Program Memory Type | Flash |
| Program Memory Size | 2KB |
| RAM Size | 128B |
| Number of Programmable I/Os | 16 |
| Core Architecture | AVR |
| Programmability | Yes |
| Number of Timers | 2 |
| Interface Type | SPI |
| CAN | 0 |
| I2C | 0 |
| SPI | 1 |
| Ethernet | 0 |
| UART | 0 |
| USART | 0 |
| USB | 0 |
| I2S | 0 |
| Max Operating Supply Voltage | 5.5V |
| Min Operating Temperature | -40°C |
| Max Operating Temperature | 85°C |
| ADC Channels | 11 |
| Number of ADCs | Single |
| Cage Code | 60991 |
| EU RoHS | Yes |
| HTS Code | 8542310001 |
| Schedule B | 8542310000 |
| ECCN | EAR99 |
| Automotive | No |
| AEC Qualified | No |
| PPAP | No |
| Radiation Hardening | No |
| RoHS Versions | 2011/65/EU, 2015/863 |
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