Microchip Technology

ATTINY45-20SI  

Microcontrollers

The ATTINY45-20SI is a low-power, 8-bit microcontroller (MCU) from Microchip Technology. It is part of the AVR Enhanced I/O (AEI) family of devices, which are designed for a wide range of applications that require low power consumption and small form factors.

Description:

The ATTINY45-20SI is a surface-mount, 20-pin integrated circuit (IC) that features an 8-bit AVR RISC-based core running at a maximum frequency of 20 MHz. It is housed in a small SOIC (Small Outline Integrated Circuit) package, making it suitable for compact and space-constrained applications.

Features:

1. 8-bit AVR RISC-based core with a maximum frequency of 20 MHz.
2. 4 KB of In-System Programmable Flash memory for program storage.
3. 256 bytes of In-System Programmable SRAM for data storage.
4. 128 bytes of EEPROM for non-volatile data storage.
5. 6 general-purpose I/O pins with optional internal pull-up resistors.
6. 23 extended I/O pins that can be remapped to the ATmega48/88/168.
7. 5-channel, 10-bit Analog-to-Digital Converter (ADC) with optional differential input stage.
8. Programmable watchdog timer with separate clock source and internal oscillator.
9. 16-bit Timer/Counter with compare and capture modes.
10. 8-bit Timer/Counter with asynchronous mode and compare modes.
11. USART with multi-sync and address detect for easy USART multiplexer operation.
12. SPI and I2C serial interfaces for communication with other devices.
13. On-chip debug system with JTAG and ISP (In-System Programming) support.
14. Active and power-saving sleep modes to reduce power consumption.
15. Brownout detection and reset feature.

Applications:

The ATTINY45-20SI is suitable for a wide range of applications due to its low power consumption, small form factor, and versatile features. Some common applications include:

1. Battery-powered devices, such as wireless sensors, remote controls, and portable electronics.
2. Industrial control and monitoring systems, where space and power constraints are critical.
3. Home automation and IoT devices, such as smart switches, thermostats, and security systems.
4. Medical devices, such as wearable health monitors and portable diagnostic equipment.
5. Toys and hobbyist projects, where small size and low power consumption are important.
6. Data acquisition systems and sensor interfaces for various types of sensors.
7. Motor control applications, such as small robotic platforms and motorized toys.

The ATTINY45-20SI's combination of low power consumption, small form factor, and a wide range of features make it a popular choice for many embedded applications where space and power are at a premium.

ATTINY45-20SI Documents

Download datasheets and manufacturer documentation for ATTINY45-20SI

Datasheets :

ATTINY25,45,85(V) Summary       aTtiny25,45,85/V      

PCN Packaging :

Transfer to Microchip/Label/Pkg 5/Sep/2016      

Design Resources :

ATtiny45 Development Tool Selector      

HTML Datasheet :

ATTINY25,45,85(V) Summary       aTtiny25,45,85/V      

Environmental Information :

Microchip CA Prop65       Microchip RoHS       Microchip REACH