Overview
The ATTINY45-20SU is a high-performance, low-power 8-bit microcontroller from Microchip Technology, based on the AVR enhanced RISC architecture. It is part of the popular AVR® ATtiny series, known for its small size and extensive feature set. This microcontroller is widely used in various embedded systems and industrial applications due to its efficiency and versatility.
Key Specifications
| Specification | Value |
|---|---|
| Part Number | ATTINY45-20SU |
| Manufacturer | Microchip Technology |
| Description | MCU 8-bit ATtiny AVR RISC 4KB Flash 3.3V/5V 8-Pin SOIC EIAJ |
| Package / Case | 8-SOIC (0.209, 5.30mm Width) |
| Number of Pins | 8 |
| Data Converters | A/D 4x10b |
| Number of I/Os | 6 |
| Watchdog Timers | Yes |
| Operating Temperature | -40°C~85°C TA |
| Supply Voltage | 2.7V~5.5V |
| Frequency | 20MHz |
| Memory Size | 4KB Flash, 256B SRAM, 256B EEPROM |
| Core Processor | AVR |
| Core Size | 8-Bit |
| PWM Channels | 2 |
| Number of Timers/Counters | 2 |
Key Features
- High efficiency design with low current consumption (300uA in use, 0.1uA in sleep mode at 1.8V)
- 4KB ISP Flash memory, 256B SRAM, and 256B EEPROM
- Six general purpose I/O lines and 32 general purpose working registers
- One 8-bit timer/counter with compare modes and one 8-bit high-speed timer/counter
- Universal Serial Interface (USI) and internal and external interrupts
- Four-channel 10-bit A/D converter
- Programmable watchdog timer with internal oscillator
- Three software selectable power saving modes
- DebugWIRE for on-chip debugging
- Operating voltage range: 1.8V to 5.5V DC
Applications
The ATTINY45-20SU is suitable for a wide range of applications, including:
- Embedded systems requiring low power consumption and high performance
- Industrial automation and control systems
- Automotive systems (compliant with IEC 61508 and ISO 26262 for safety-critical applications)
- Consumer electronics and IoT devices
- Robotics and automation projects
Q & A
- What is the ATTINY45-20SU microcontroller?
The ATTINY45-20SU is an 8-bit microcontroller from Microchip Technology, based on the AVR enhanced RISC architecture. - What is the memory configuration of the ATTINY45-20SU?
The microcontroller has 4KB of ISP Flash memory, 256B of SRAM, and 256B of EEPROM. - What is the operating voltage range of the ATTINY45-20SU?
The operating voltage range is from 1.8V to 5.5V DC. - How many I/O pins does the ATTINY45-20SU have?
The microcontroller has six general purpose I/O lines. - Does the ATTINY45-20SU support PWM?
Yes, it supports two PWM channels. - What is the maximum operating frequency of the ATTINY45-20SU?
The maximum operating frequency is 20MHz. - Is the ATTINY45-20SU suitable for safety-critical applications?
Yes, it is recommended for safety-critical applications targeting industrial and automotive products, compliant with IEC 61508 and ISO 26262. - How do I program the ATTINY45-20SU?
You can program it using an SPI programmer or an Arduino board, and the process involves writing and compiling the code in an IDE like Atmel Studio, then burning the HEX file into the microcontroller's flash memory. - What are some alternatives to the ATTINY45-20SU?
The ATTINY25 and ATTINY85 are suitable alternatives, though they have different internal Flash, SRAM, and EEPROM values. - What is the package type of the ATTINY45-20SU?
The package type is 8-SOIC (0.209, 5.30mm Width).
