PIN and Block DIAGRAM

What is ATTINY85-20SU？

ATTINY85-20SU is CMOS high performance 8-bit low power microcontroller design based on AVR enhanced RISC structure using microchip technology which combines programable 8Kb flash program memory with 6 general-purpose I/O ports, 512B EEPROM, 32 general-purpose registers and operates at 20MHz reference frequency.It includes one 8 bit high-speed timer/counter, one-bit timer/counter with compare modes,internal and external interrupts, programmable watchdog timer with internal oscillator,USI and 3 power-saving modes. By allowing the system designer to provide optimization to processing speed and power consumption, the ATTINY85-20SU  achieves throughputs approaching 20 MIPS for 20MHz by implementing powerful instructions in a single clock cycle.

ATTINY85-20SU is designed and manufactured with Atmel’s nonvolatile high-density memory technology. The ISP flash in chip let the program to be reprogrammed in-system by using SPI serial interface. The ATTINY85-20SU is a well built powerful microcontroller that offers a highly flexible and cost-effective solution to many embedded control applications by merging In-System Self-Programmable Flash with 8-bit RISC CPU on a monolithic chip.

The ATTINY85-20SU is supported with a full suite of program and system development tools including in-circuit emulators, C compilers, evaluation kits, macro assemblers,  and program debugger/simulators.

Pin Configuration

Features

• Low power AVR 8-bit microcontroller with high performance
• Advanced RISC structure
• Non-volatile data memories and program
• In-system self-programmable flash of 8KB with 10,000 write/erase cycles.
• In system programmable EEPROM of 512B with 100,000 writes/erase cycles.
• Internal SRAM of 512B
• 10,000 Flash/ 100,000 EEPROM write/erase cycles
• 20 years at 85°C/ 100 years at 25°C data retention
• Software security programming lock for Flash and EEPROM data.
• Peripheral Features
• Two PWM channels and 8-bit timer/counter with Prescaler
• 8-bit High-Speed Timer/Counter with Separate Prescaler
• Universal Serial Interface with Start Condition Detector
• 10-bit ADC
• On-chip Analog Comparator
• Programmable Watchdog Timer with Separate On-chip Oscillator
• On-chip debug system
• In system programmable through SP port
• Low Power Idle, ADC Noise Reduction, and Power-down Modes
• Programmable Brown-out Detection Circuit
• External and Internal Interrupt Sources
• Enhanced Power-on Reset Circuit
• Internal Calibrated Oscillator
• Operates at 2.7V to 5.5V voltages
• Speed grade 0 – 10 MHz @ 2.7 – 5.5V, 0 – 20 MHz @ 4.5 – 5.5V
• Industrial Temperature Range
• Low Power Consumption

– Active Mode:

• 1 MHz, 1.8V: 300 µA

– Power-down Mode:

• µA at 1.8V

EQUIVALENT AND ALTERNATIVES

ATTINY85-20SURCT

Applications

There are many applications of ATTINY85-20SU in low power embedded design, development and control systems such as

• Automation and control process
• consumer electronics
• Senors and instrumentation
• appliances
• monitoring medical equipment
• circuitry to control processes.
• motor control
• rectification
• power regulation
• DAC applications.

Commonly, it is used with Arduino to provide low power battery-operated applications.

DIMENSIONS

ATTINY85-20SU Related Products Prices

Parts	Mfr.	Description	Stock	Prices	Buy Now
ATTINY85-20SU	Atmel	IC MCU 8BIT 8KB FLASH 8SOIC	1	$0.930 Lowest
ATTINY861V-10SU	Atmel	IC MCU 8BIT 8KB FLASH 20SOIC	1603243	$1.213 Lowest
ATTINY861A-MU	Atmel	IC MCU 8BIT 8KB FLASH 32VQFN	78	$1.856 Lowest
ATTINY85-20PU	Atmel	IC MCU 8BIT 8KB FLASH 8DIP	11500	$1.149 Lowest

ATTINY85-20SU DATASHEET PDF