ATMEGA8-16PU Microcontroller: Symbol, Equivalent and Electrical Characteristics
20 September 2023
Ⅱ. Symbol, Footprint and Pin Configuration of ATMEGA8-16PU
Ⅳ. Electrical characteristics of ATMEGA8-16PU
Ⅴ. What is the difference between ATMEGA8-16PU and ATMEGA8-16PI?
Ⅶ. Package and packaging of ATMEGA8-16PU
Ⅷ. Application of ATMEGA8-16PU
The AVR®ATmega8 is an 8-bit microcontroller that utilizes the AVR RISC architecture and exhibits relatively high power consumption. Due to its ability to execute multiple tasks within a single clock cycle, the ATMEGA8 boasts a throughput capacity of 1 million instructions per second per megahertz (1 MIPS/MHz). This characteristic enables system designers to reduce energy consumption while maintaining computational speed.
This microcontroller boasts three programmable pulse width modulation channels, 28 standard pins for versatile connectivity, and 10 analog input channels for precise data acquisition. Operating under a wide temperature range from -40°C to 85 °C, the ATMEGA8-16PU is suitable for both extreme and standard environmental conditions. It operates efficiently with a supply voltage ranging from 4.5V to 5.5V, making it compatible with various power sources. With 8K bytes of memory, it provides ample storage for program code and data, while its clock frequency of 16MHz ensures rapid data processing. In addition, the ATMEGA8-16PU is designed for ease of installation, thanks to its through-hole mounting method. This feature makes it adaptable for a diverse range of surface-mounted device application scenarios.
Replacement and equivalent：
• ATMEGA8-16PL
• High Endurance Non-volatile Memory Segments
• I/O Pins: ATMEGA8-16PU has 23 general-purpose I/O pins that can be used for various input and output functions.
• CPU: It uses 8-bit AVR microcontroller with advanced RISC architecture.
• Supply Voltage: 4.5V to 5.5V, usually use 5V power supply.
• Low Power Modes: It supports different low power modes to extend battery life.
• PWM Output: ATMEGA8-16PU has three pins that can be used for PWM (Pulse Width Modulation) output.
• Interrupt Controller: Its built-in interrupt controller supports multiple interrupt sources and can be used to implement responsive program execution.
• Analog-to-Digital Converter (ADC): It has an 8-channel 10-bit ADC that allows us to read analog signals from sensors or other devices.
• Clock Speed: It operates at a maximum clock speed of 16 MHz.
• Clock Source: It supports internal and external clock sources, and can use internal RC oscillator or external crystal oscillator.
• EEPROM: It also has 512 bytes of EEPROM (Electrically Erasable Programmable Read Only Memory) for non-volatile data storage.
• Communication Interface: It supports serial communication through USART (Universal Synchronous and Asynchronous Receiver-Transmitter) and SPI (Serial Peripheral Interface).
ATMEGA8-16PU and ATMEGA8-16PI are two different industrial-grade microcontrollers. The main difference between them is whether they contain lead components. ATMEGA8-16PU is a lead-free industrial grade microcontroller, while ATMEGA8-16PI is a leaded industrial grade microcontroller. ATMEGA8-16PU is a better choice for those who are concerned about environmental issues and want to reduce lead usage. And if we have lower requirements for lead content in products and consider cost and other factors, we can choose to use ATMEGA8-16PI as the microcontroller of its products.
All the I/Os and peripherals of the Atmel® AVR® ATmega8 microcontroller are situated within the I/O space. The I/O locations can be accessed using the IN and OUT instructions, facilitating the transfer of data between the 32 general-purpose working registers and the I/O space. Notably, I/O registers falling within the address range of 0x00 to 0x1F can be directly manipulated at the bit level through the SBI and CBI instructions. To inquire about the value of individual bits in these registers, you can employ the SBIS and SBIC instructions. When utilizing the I/O-specific commands IN and OUT, it is essential to utilize addresses within the range of 0x00 to 0x3F. However, if you intend to address I/O registers as part of the data space using LD and ST instructions, it is necessary to add 0x20 to these addresses.
To ensure compatibility with future devices, it is imperative to set reserved bits to zero when accessed. Reserved I/O memory addresses should never be subjected to write operations. Certain Status Flags can be cleared by writing a logical one to them. It's worth noting that the CBI and SBI instructions operate on all bits within the I/O Register, effectively writing a one to any flag found to be set, thereby clearing the flag. These CBI and SBI instructions exclusively function with registers in the range of 0x00 to 0x1F.
ATMEGA8-16PU is a microcontroller in dual in-line package (DIP). DIP is a traditional form of packaging that is fixed on the circuit board by pin insertion. Using this packaging method, ATMEGA8-16PU can be easily plugged into a standard 28-pin DIP socket or directly fixed to the circuit board by soldering.
ATMEGA8-16PU is usually placed in a plastic conductive box and has anti-static protection. This device effectively protects wafers from static electricity. To ensure the quality of chips during long-term storage, they are usually placed in a vacuum container with a moisture-proof seal. At the same time, specific information related to the product such as the chip model, batch number, and production date will be clearly marked on the packaging.
The following are common application for the ATMEGA8-16PU microcontroller:
• LED control: Due to its GPIO pins, ATMEGA8-16PU can be used in LED display and lighting systems.
• Sensor interface: ATMEGA8-16PU has multiple general-purpose input and output pins that can be used to connect various sensors, such as light sensors, temperature sensors, humidity sensors, etc.
• Industrial control and automation: It is commonly used in motor control, production line automation, robots, etc.
• Electronic instruments: It can be used to design simple measurement and control instruments, such as multi-purpose instruments, data acquisition equipment, etc.
• Embedded media player: Although the processing power of ATMEGA8-16PU is relatively low, it can still be used to design simple audio and video players.
• Medical devices and health monitoring equipment: It is commonly used in equipment such as blood glucose meters, electrocardiographs, and smart health monitoring.
Frequently Asked Questions
1. What is the IC equivalent of ATMEGA8-16PU?
The equivalent of ATMEGA8-16PU is ATMEGA8-16PC, ATMEGA8-16PI and ATMEGA8-16PL.
2. What does the "U" in ATMEGA8-16PU stand for?
In ATMEGA8-16PU, "U" stands for lead-free industrial grade. This means that the equipment has been designed and manufactured with lead-free environmental requirements in mind to meet environmental standards in industrial production.
3. What is the difference between ATMEGA8 8PU and 16PU?
They are pretty much the same. The ATMEGA8 is only available in 16MHz version, therefore they usually don't add the 16 suffix to the name. ATMEGA8A is an improved version of ATMEGA8 with better power characteristics.
