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ATMEGA48-20AU
8-bit MCU with 4kB of Flash memory, 0.256kB of EEPROM, and 23 I/O pins - ATMEGA48-20AUATMEGA48-20AU
8-bit MCU with 4kB of Flash memory, 0.256kB of EEPROM, and 23 I/O pins - ATMEGA48-20AU
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Manufacturer Part # : ATMEGA48-20AU
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Package/Case: TQFP-32
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Brand: Microchip Technology
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Product Categories : Microcontrollers
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ATMEGA48-20AU DataSheet
Current price plan is under preparation. Please contact our customer service team for the latest pricing information. Thank you for your understanding and support!
Details
Atmel Corporation's ATMEGA48-20AU microcontroller is a high-performance, low-power device designed to meet the demanding requirements of modern engineering. Its robust features, including a 20 MHz maximum frequency, AVR RISC architecture, and generous memory capacity, make it an excellent choice for applications in industrial control, consumer electronics, automotive systems, and communication devices. The microcontroller's extensive connectivity options, such as 23 general-purpose I/O pins, 6 PWM channels, and multiple communication interfaces, enable seamless integration within complex systems. Additionally, its low power consumption and wide operating voltage range provide flexibility for diverse power supply needs
Key Features
- High Performance, Low Power Atmel®AVR® 8-Bit Microcontroller Family Advanced RISC Architecture– 131 Powerful Instructions– Most Single Clock Cycle Execution– 32 x 8 General Purpose Working Registers– Fully Static Operation– Up to 20 MIPS Throughput at 20MHz– On-chip 2-cycle Multiplier High Endurance Non-volatile Memory Segments– 4K/8K/16KBytes of In-System Self-Programmable Flash program Memory– 256/512/512Bytes EEPROM– 512/1K/1KBytes Internal SRAM– Write/Erase Cycles: 10,000 Flash/100,000 EEPROM– Data Retention: 20 years at 85°C/100 years at 25°C(1)– Optional Boot Code Section with Independent Lock Bits In-System Programming by On-chip Boot Program True Read-While-Write Operation– Programming Lock for Software Security Atmel® QTouch® Library Support– Capacitive Touch Buttons, Sliders and Wheels– QTouch and QMatrix® Acquisition– Up to 64 sense channels Peripheral Features– Two 8-bit Timer/Counters with Separate Prescaler and Compare Mode– One 16-bit Timer/Counter with Separate Prescaler, Compare Mode, and Capture Mode– Real Time Counter with Separate Oscillator– Six PWM Channels– 8-channel 10-bit ADC in TQFP and QFN/MLF package Temperature Measurement– 6-channel 10-bit ADC in PDIP Package Temperature Measurement– Two Master/Slave SPI Serial Interface– One Programmable Serial USART– One Byte-oriented 2-wire Serial Interface (Philips I2C compatible)– Programmable Watchdog Timer with Separate On-chip Oscillator– One On-chip Analog Comparator– Interrupt and Wake-up on Pin Change Special Microcontroller Features– Power-on Reset and Programmable Brown-out Detection– Internal Calibrated Oscillator– External and Internal Interrupt Sources– Six Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, Standby, and Extended Standby I/O and Packages– 23 Programmable I/O Lines– 28-pin PDIP, 32-lead TQFP, 28-pad QFN/MLF and 32-pad QFN/MLF Operating Voltage:– 2.7 - 5.5V for ATmega48/88/168– 1.8 - 5.5V for ATmega48V/88V/168V Temperature Range:– -40°C to 85°C Speed Grade:– ATmega48/88/168: 0 - 10MHz @ 2.7V - 5.5V, 0 - 20MHz @ 4.5V - 5.5V– ATmega48V/88V/168V: 0 - 4MHz @ 1.8V - 5.5V, 0 - 10MHz @ 2.7V - 5.5V Power Consumption at 1MHz, 1.8V, 25°C– Active Mode: 0.3mA– Power-down Mode: 0.1μA– Power-save Mode: 0.8μA (Including 32kHz RTC)
Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
| Product Category ! | 8-bit Microcontrollers - MCU | RoHS | Details |
| Core | AVR | Program Memory Size | 4 kB |
| Data RAM Size | 512 B | Package / Case | TQFP-32 |
| Maximum Clock Frequency | 20 MHz | ADC Resolution | 10 bit |
| Number of I/Os | 23 I/O | Supply Voltage - Min | 2.7 V |
| Supply Voltage - Max | 5.5 V | Mounting Style | SMD/SMT |
| Data Bus Width | 8 bit | Minimum Operating Temperature | - 40 C |
| Maximum Operating Temperature ! | + 85 C | Series | ATmega48 |
| Analog Supply Voltage | 1.8 V to 5.5 V | Brand | Microchip Technology |
| Data RAM Type | SRAM | Data ROM Size | 512 B |
| Data ROM Type | EEPROM | Height | 1 mm |
| I/O Voltage | 1.8 V to 5.5 V | Interface Type | I2C, SPI, USART |
| Length | 7 mm | Moisture Sensitive | Yes |
| Number of ADC Channels | 8 Channel | Number of Timers/Counters | 3 Timer |
| Processor Series | megaAVR | Product | MCUs |
| Product Type ! | 8-bit Microcontrollers - MCU | Program Memory Type ! | Flash |
| Factory Pack Quantity | 250 | Subcategory | Microcontrollers - MCU |
| Tradename | AVR | Watchdog Timers | Watchdog Timer |
| Width | 7 mm | Unit Weight | 0.011288 oz |
Specification Comparison
Datasheet PDF
Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.
FAQs
What is ATMEGA48-20AU?
The ATMEGA48-20AU is a high-performance, low-power 8-bit microcontroller designed by Microchip Technology. It belongs to the ATmega series of microcontrollers and is ideal for a wide range of embedded applications, including consumer electronics, automotive systems, and industrial automation.
How Does ATMEGA48-20AU Work?
The ATMEGA48-20AU functions as a versatile microcontroller with a rich set of features including programmable I/O pins, timers, analog-to-digital converters, and communication interfaces. It executes instructions from its flash memory and interfaces with external devices to perform tasks based on the embedded program logic.
How Many Pins does ATMEGA48-20AU have and What are the Functions of the Pinout Configuration?
The ATMEGA48-20AU comes in a 32-pin TQFP (Thin Quad Flat Package) package. The pinout configuration includes:
- VCC: Power supply pin.
- GND: Ground pin.
- RESET: Reset pin for restarting the microcontroller.
- XTAL1, XTAL2: Crystal oscillator input and output pins for clock generation.
- PORTx: General-purpose I/O pins for data communication.
- ADCx: Analog-to-digital converter input pins for analog signal processing.
- USART: Universal synchronous/asynchronous receiver-transmitter for serial communication.
What are the Pros and Cons of ATMEGA48-20AU?
Pros:
- High Performance: Provides a balance of performance and power efficiency for various applications.
- Rich Feature Set: Includes analog and digital peripherals for versatile functionality.
- Extensive Connectivity: Supports communication interfaces like USART for data exchange.
- Flexible I/O Configuration: Offers programmable I/O pins for customization.
- Industry Standard: Part of the popular ATmega series known for reliability and scalability.
Cons:
- Complex Programming: Requires understanding of embedded programming concepts for efficient utilization.
- External Components: May need additional components like crystal oscillator for clock accuracy.
- Higher Cost: Advanced features may lead to a higher overall system cost compared to simpler microcontrollers.
Are There Any Equivalents/Alternatives to ATMEGA48-20AU for Recommendation?
- The ATMEGA328P from Microchip is a higher variant with more flash memory and I/O pins.
- Alternatives to the ATMEGA48-20AU include the PIC16F877A from Microchip and the STM32F103 from STMicroelectronics.
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