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ATTINY25-20SNR Integrated Circuits IC MCU 8 Bit Microcontrollers

Microcontroller IC
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MCU 8-bit ATtiny AVR RISC 2KB Flash 3.3V/5V 8-Pin SOIC
Product Name:
8-bit Microcontrollers - MCU 2KB FL 128B EE SRAM 20MHz +105C
Electronic Components-Integrated Circuits
Microcontroller IC MCU
Mounting Type:
Surface Mounting
Base Part Number:
Operating Ambient Temperature Range:
-40°C ~ 85°C (TA)
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IC MCU 8 Bit Microcontrollers


Integrated Circuits MCU 8 Bit Microcontrollers


8 Bit Microcontroller IC


MICROCHIP ATTINY25-20SNR Integrated circuits IC MCU8-bit Microcontrollers Microcontroller with 2K Bytes In-System Programmable Flash


ATTINY25 8-bit Microcontrollers - MCU 2KB FL 128B EE SRAM 20MHz +105C


ATTINY25-20SN Specification:

EU RoHS Compliant
Part Status Active
HTS 8542.31.00.01
Automotive No
Family Name ATtiny
Instruction Set Architecture RISC
Device Core AVR
Core Architecture AVR
Maximum CPU Frequency (MHz) 20
Maximum Clock Rate (MHz) 20
Data Bus Width (bit) 8
Program Memory Type Flash
Program Memory Size 2KB
RAM Size 128B
Programmability Yes
Interface Type SPI/USART/USI
Number of I/Os 18
No. of Timers 2
I2C 0
I2S 0
Ethernet 0
Watchdog 1
Analog Comparators 1
Parallel Master Port No
Real Time Clock No
Minimum Operating Supply Voltage (V) 2.7
Typical Operating Supply Voltage (V) 3.3|5
Maximum Operating Supply Voltage (V) 5.5
Minimum Operating Temperature (°C) -40
Maximum Operating Temperature (°C) 85
Supplier Temperature Grade Industrial
Packaging Tube
Pin Count 20
Standard Package Name SOP
Supplier Package SOIC W
Mounting Surface Mount
Package Height 2.37(Max)
Package Length 13(Max)
Package Width 7.6(Max)
PCB changed 20
Lead Shape Gull-wing
Part number ATTINY22-20SNR



The ATtiny2313 is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC architecture.

By executing powerful instructions in a single clock cycle, the ATtiny2313 achieves throughputs approaching

1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed.


The AVR core combines a rich instruction set with 32 general purpose working registers. All the 32 registers are directly connected to the Arithmetic Logic Unit (ALU), allowing two independent registers to be accessed in one single instruction executed in one clock cycle.

The resulting architecture is more code efficient while achieving throughputs up to ten times faster than conventional CISC microcontrollers.

The ATtiny2313 provides the following features: 2K bytes of In-System Programmable Flash, 128 bytes EEPROM, 128 bytes SRAM, 18 general purpose I/O lines, 32 general purpose working registers, a single-wire Interface for On-chip Debugging, two flexible Timer/Counters with compare modes, internal and external interrupts, a serial programmable USART, Universal Serial Interface with Start Condition Detector, a programmable Watchdog Timer with internal Oscillator, and three software selectable power saving modes. The Idle mode stops the CPU while allowing the SRAM, Timer/Counters, and interrupt system to continue functioning. The Power-down mode saves the register contents but freezes the Oscillator, disabling all other chip functions until the next interrupt or hardware reset. In Standby mode, the crystal/resonator Oscillator is running while the rest of the device is sleeping. This allows very fast start-up combined with low-power consumption. The device is manufactured using Atmel’s high density non-volatile memory technology. The On-chip ISP Flash allows the program memory to be reprogrammed In-System through an SPI serial interface, or by a conventional non-volatile memory programmer. By combining an 8-bit RISC CPU with In-System Self-Programmable Flash on a monolithic chip, the Atmel ATtiny2313 is a powerful microcontroller that provides a highly flexible and cost effective solution to many embedded control applications. The ATtiny2313 AVR is supported with a full suite of program and system development tools including: C Compilers, Macro Assemblers, Program Debugger/Simulators, In-Circuit Emulators, and Evaluation kits.


• Utilizes the AVR® RISC Architecture
• AVR – High-performance and Low-power RISC Architecture
– 120 Powerful Instructions – Most Single Clock Cycle Execution
– 32 x 8 General Purpose Working Registers
– Fully Static Operation
– Up to 20 MIPS Throughput at 20 MHz
• Data and Non-volatile Program and Data Memories
– 2K Bytes of In-System Self Programmable Flash
Endurance 10,000 Write/Erase Cycles
– 128 Bytes In-System Programmable EEPROM
Endurance: 100,000 Write/Erase Cycles
– 128 Bytes Internal SRAM
– Programming Lock for Flash Program and EEPROM Data Security
• Peripheral Features
– One 8-bit Timer/Counter with Separate Prescaler and Compare Mode
– One 16-bit Timer/Counter with Separate Prescaler, Compare and Capture Modes
– Four PWM Channels
– On-chip Analog Comparator
– Programmable Watchdog Timer with On-chip Oscillator
– USI – Universal Serial Interface
– Full Duplex USART
• Special Microcontroller Features
– debugWIRE On-chip Debugging
– In-System Programmable via SPI Port
– External and Internal Interrupt Sources
– Low-power Idle, Power-down, and Standby Modes
– Enhanced Power-on Reset Circuit
– Programmable Brown-out Detection Circuit
– Internal Calibrated Oscillator
• I/O and Packages
– 18 Programmable I/O Lines
– 20-pin PDIP, 20-pin SOIC, 20-pad QFN/MLF
• Operating Voltages
– 1.8 – 5.5V (ATtiny2313V)
– 2.7 – 5.5V (ATtiny2313)
• Speed Grades
– ATtiny2313V: 0 – 4 MHz @ 1.8 - 5.5V, 0 – 10 MHz @ 2.7 – 5.5V
– ATtiny2313: 0 – 10 MHz @ 2.7 - 5.5V, 0 – 20 MHz @ 4.5 – 5.5V
• Typical Power Consumption
– Active Mode
1 MHz, 1.8V: 230 µA
32 kHz, 1.8V: 20 µA (including oscillator)
– Power-down Mode
< 0.1 µA at 1.8V


ATTINY25-20SNR Integrated Circuits IC MCU 8 Bit MicrocontrollersATTINY25-20SNR Integrated Circuits IC MCU 8 Bit Microcontrollers


ATTINY25-20SNR Integrated Circuits IC MCU 8 Bit MicrocontrollersATTINY25-20SNR Integrated Circuits IC MCU 8 Bit Microcontrollers

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Environmental & Export Classifications

RoHS Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 3 (168 Hours)
REACH Status REACH Unaffected
HTSUS 8542.32.0071


About Microchip Technology

Microchip Technology  is a leading provider of microcontroller and analog semiconductors, providing low-risk product development, lower total system cost and faster time to market for thousands of diverse customer applications worldwide. Headquartered in Chandler, Arizona, Microchip offers outstanding technical support along with dependable delivery and quality.


ATTINY25-20SNR Integrated Circuits IC MCU 8 Bit MicrocontrollersATTINY25-20SNR Integrated Circuits IC MCU 8 Bit MicrocontrollersATTINY25-20SNR Integrated Circuits IC MCU 8 Bit Microcontrollers







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