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OLIMEX© 2015
CHAPTER 4: ATMEL AVR ATTINY85
4. Introduction to the chapter
In this chapter is located the information about the heart of OLIMEXINO-85 – its microcontroller.
The information is a modified version of the datasheet provided by its manufacturers.
4.1 The microcontroller
The list of features for ATtiny85 is listed below:
High Performance, Low Power AVR® 8-Bit Microcontroller
Advanced RISC Architecture
120 Powerful Instructions – Most Single Clock Cycle Execution
32 x 8 General Purpose Working Registers
Fully Static Operation
Non-volatile Program and Data Memories
2/4/8K Bytes of In-System Programmable Program Memory Flash
Endurance: 10,000 Write/Erase Cycles
128/256/512 Bytes In-System Programmable EEPROM
Endurance: 100,000 Write/Erase Cycles
128/256/512 Bytes Internal SRAM
Programming Lock for Self-Programming Flash Program and EEPROM Data Security
Peripheral Features
8-bit Timer/Counter with Prescaler and Two PWM Channels
8-bit High Speed Timer/Counter with Separate Prescaler
2 High Frequency PWM Outputs with Separate Output Compare Registers
Programmable Dead Time Generator
USI – Universal Serial Interface with Start Condition Detector
10-bit ADC
4 Single Ended Channels
2 Differential ADC Channel Pairs with Programmable Gain (1x, 20x)
Temperature Measurement
Programmable Watchdog Timer with Separate On-chip Oscillator
On-chip Analog Comparator
Special Microcontroller Features
debugWIRE On-chip Debug System
In-System Programmable via SPI Port
External and Internal Interrupt Sources
Low Power Idle, ADC Noise Reduction, and Power-down Modes
Enhanced Power-on Reset Circuit
Programmable Brown-out Detection Circuit
Internal Calibrated Oscillator
I/O and Packages
Six Programmable I/O Lines
8-pin PDIP, 8-pin SOIC, 20-pad QFN/MLF, and 8-pin TSSOP (only ATtiny45/V)
Operating Voltage
Page 13 of 23
OLIMEXINO-85 user's manual
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