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ATTINY85-20SF
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Product Detailed Parameters
- Description：IC MCU 8BIT 8KB FLASH 8SOIC
- Series：AVR® ATtiny, Functional Safety (FuSa)
- Mfr：Microchip Technology
- Package：Tube
- Core Processor：AVR
- Core Size：8-Bit
- Speed：20MHz
- Connectivity：USI
- Peripherals：Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O：6
- Program Memory Size：8KB (4K x 16)
- Program Memory Type：FLASH
- EEPROM Size：512 x 8
- RAM Size：512 x 8
- Voltage - Supply (Vcc/Vdd)：2.7V ~ 5.5V
- Data Converters：A/D 4x10b
- Oscillator Type：Internal
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：8-SOIC
- Package / Case：8-SOIC (0.209", 5.30mm Width)
- Grade：-
- Qualification：-
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Overview
The ATTINY85-20SF is an 8-bit AVR microcontroller featuring 8KB of In-System Programmable Flash, 512 bytes of EEPROM, and 512 bytes of SRAM. It operates at a maximum clock frequency of 20 MHz within a voltage range of 2.7V to 5.5V. The device includes a 10-bit ADC with four single-ended channels, a Universal Serial Interface (USI), and six programmable I/O lines. It utilizes a 20-pad QFN/MLF package.
Feature Summary
- Advanced RISC architecture executing most instructions in a single clock cycle
- Non-volatile memory with high endurance for program and data storage
- Integrated analog-to-digital converter with differential channel pairs
- Multiple power-saving modes including idle and power-down
Applications
- Battery-powered sensor nodes
- Simple motor control systems
- Low-cost consumer electronics
- Educational embedded development platforms
Procurement Notes
Verify the specific suffix 'SF' against official Microchip documentation to confirm lead finish and packaging details. Ensure the component matches the required industrial temperature range and voltage specifications for your application environment before procurement.
Selection Notes
Select this model when 8KB of program memory is sufficient for the application logic. Consider the 20-pad QFN/MLF package requirements for PCB layout and soldering processes. Evaluate the trade-off between processing speed and power consumption based on the 20 MHz maximum frequency capability.
Part Context
This component belongs to the ATtiny family of 8-bit AVR microcontrollers manufactured by Microchip Technology. It shares architectural similarities with the ATtiny25 and ATtiny45 but offers increased memory capacity. The series is designed for applications requiring low cost and minimal pin count.
Replacement Considerations
ATtiny85-20PU
FAQ
What is the maximum operating frequency?
The maximum operating frequency is 20 MHz at supply voltages between 4.5V and 5.5V.
Does the device support hardware UART?
No, it uses a Universal Serial Interface (USI) which can be configured for SPI or I2C protocols via software.
How many analog input channels are available?
There are four single-ended ADC channels and two differential channel pairs available.
