Overview
The ATmega328PB is a low-power CMOS 8-bit microcontroller from Microchip Technology, based on the AVR enhanced RISC architecture. This microcontroller is designed to optimize power consumption versus processing speed, making it suitable for a wide range of industrial and commercial applications. It executes powerful instructions in a single clock cycle, achieving throughputs close to 1MIPS per MHz. The ATmega328PB is part of the Atmel® AVR® 8-Bit Microcontroller Family and is supported by a full suite of program and system development tools.
Key Specifications
| Specification | Value |
|---|---|
| Program Memory Size | 32 KBytes (In-System Self-Programmable Flash) |
| EEPROM | 1 KBytes |
| Internal SRAM | 2 KBytes |
| General Purpose I/O Lines | 27 |
| Operating Voltage | 1.8 - 5.5 V |
| Temperature Range | -40°C to 85°C |
| Maximum Clock Frequency | Up to 20 MHz |
| ADC Resolution | 10-bit |
| ADC Channels | 8 |
| Timers/Counters | 2 x 8-bit, 3 x 16-bit |
| SPI Serial Ports | 2 |
| I2C Serial Interface | 2 |
| Power Consumption (Active Mode at 1MHz, 1.8V, 25°C) | 0.2 mA |
| Power Consumption (Power-down Mode) | 0.2 μA |
| Package Type | 32-pin TQFP and 32-pin QFN/MLF |
Key Features
- Advanced RISC Architecture: Executes powerful instructions in a single clock cycle, achieving throughputs close to 1MIPS per MHz.
- High Endurance Non-volatile Memory: 32 KBytes of In-System Self-Programmable Flash, 1 KByte EEPROM, and 2 KBytes Internal SRAM.
- Peripheral Touch Controller (PTC): Supports capacitive touch buttons, sliders, and wheels with up to 24 self-cap and 144 mutual-cap channels.
- Timer/Counters and PWM Channels: Five flexible Timer/Counters with compare modes and 10 PWM channels.
- Serial Communication Interfaces: Two serial programmable USART, two byte-oriented 2-wire Serial Interface (I2C), and two SPI serial ports.
- Power Saving Modes: Six software selectable power saving modes including Idle, Power-down, and Extended Standby.
- Programmable Watchdog Timer and Clock Failure Detector: Enhances system reliability.
Applications
The ATmega328PB is suitable for a wide range of applications, including:
- Embedded Systems: Ideal for various embedded system designs due to its low power consumption and high performance.
- Industrial Automation: Reliable and rugged, making it suitable for industrial settings.
- IoT Devices: Supports the development of Internet of Things (IoT) devices with its advanced features and low power consumption.
- Consumer Electronics: Can be used in consumer electronics requiring low power and high processing capabilities.
Q & A
- What is the maximum clock frequency of the ATmega328PB?
The maximum clock frequency of the ATmega328PB is up to 20 MHz.
- What is the operating voltage range of the ATmega328PB?
The operating voltage range is 1.8 - 5.5 V.
- How much program memory does the ATmega328PB have?
The ATmega328PB has 32 KBytes of In-System Self-Programmable Flash program memory.
- What types of serial communication interfaces does the ATmega328PB support?
The ATmega328PB supports two serial programmable USART, two byte-oriented 2-wire Serial Interface (I2C), and two SPI serial ports.
- Does the ATmega328PB have a Peripheral Touch Controller?
Yes, the ATmega328PB includes a Peripheral Touch Controller (PTC) supporting capacitive touch buttons, sliders, and wheels.
- What are the power consumption figures for the ATmega328PB in different modes?
In Active Mode at 1MHz, 1.8V, and 25°C, the power consumption is 0.2 mA. In Power-down Mode, it is 0.2 μA.
- What is the temperature range for the ATmega328PB?
The temperature range is -40°C to 85°C.
- How many general purpose I/O lines does the ATmega328PB have?
The ATmega328PB has 27 general purpose I/O lines.
- Does the ATmega328PB support in-system programming?
Yes, the ATmega328PB supports in-system programming by an on-chip boot program.
- What are the key applications of the ATmega328PB?
The ATmega328PB is suitable for embedded systems, industrial automation, IoT devices, and consumer electronics.
