ATMEGA48A-AU The ATMEGA48A-AU is an 8-bit AVR microcontroller from Microchip Technology with 4KB flash memory, 512 bytes RAM, and 20MHz maximum speed. It is housed in a 32-TQFP package and operates from 1.8V to 5.5V.
Mfr Part #:

ATMEGA48A-AU

Available from 3 distributors
Mfr Name: Microchip Technology
Microchip Technology
The ATMEGA48A-AU is an 8-bit AVR microcontroller from Microchip Technology with 4KB flash memory, 512 bytes RAM, and 20MHz maximum speed. It is housed in a 32-TQFP package and operates from 1.8V to 5.5V.
✓ Total Stock: 87,550 pcs

ATMEGA48A-AU Available from 3 distributors

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ATMEGA48A-AU Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Connectivity
Core Processor
Core Size
Data Converters
EEPROM Size
Lead Style
Mounting Type
Number of I
Number of I/O
Operating Temperature
Oscillator Type
Peripherals
Program Memory Size
Program Memory Type
RAM Size
SVHC Present
Speed
Supplier Device Package
Termination Style
Voltage
Watchdog Timer

ATMEGA48A-AU Description

Short technical summary and product information.

The ATMEGA48A-AU is an 8-bit microcontroller based on the AVR enhanced RISC architecture from Microchip Technology. It features 4KB of in-system self-programmable flash memory, 512 bytes of SRAM, and 256 bytes of EEPROM. The device operates at a maximum clock frequency of 20MHz, delivering up to 20 MIPS throughput. It supports a wide supply voltage range of 1.8V to 5.5V, with full speed operation at 4.5V to 5.5V for 20MHz.

 

This microcontroller integrates a rich set of peripherals including two 8-bit timers, one 16-bit timer, six PWM channels, an 8-channel 10-bit ADC, and multiple serial interfaces (I²C, SPI, USART). It also features brown-out detection, power-on reset, watchdog timer, and internal oscillator. The device includes six sleep modes to optimize power consumption, with typical power-down current as low as 0.1µA.

 

The ATMEGA48A-AU is well-suited for a variety of embedded applications such as industrial control, sensor interfaces, and consumer electronics. Its low-power operation and high-performance make it ideal for battery-powered devices.

 

The microcontroller is available in a 32-lead TQFP package (7x7mm) with a 0.80mm pitch and is surface mountable. It operates over an industrial temperature range of -40°C to 85°C.

ATMEGA48A-AU Quick Information

Product Type: Microcontroller
Series: ATmega48A
Canonical Name: ATmega48A-AU
Subcategory: 8-bit Microcontroller

ATMEGA48A-AU Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected
Lead Free: Yes

ATMEGA48A-AU Features

  • 8-bit AVR microcontroller with 20MHz performance.
  • 4KB self-programmable Flash memory on-chip.
  • 512 bytes SRAM and 256 bytes EEPROM.
  • Integrated 8-channel 10-bit ADC.
  • Six PWM channels for motor control.

ATMEGA48A-AU Applications

  • Ideal for industrial control systems.
  • Used in battery-powered sensor nodes.
  • Suitable for consumer electronics.
  • Applied in embedded automation.

ATMEGA48A-AU FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of the ATMEGA48A-AU?

1.8V to 5.5V, with full speed 20MHz operation requiring 4.5V to 5.5V.

What is the package type of the ATMEGA48A-AU?

32-TQFP (7x7mm) surface mount package with 0.80mm pitch.

What is the operating temperature range?

-40°C to 85°C (industrial grade).

Is the ATMEGA48A-AU RoHS compliant?

RoHS3 compliant per manufacturer data, but not independently verified.

What is the flash memory size?

4KB (2K x 16 words).

What is the maximum clock speed?

20MHz at 4.5V-5.5V supply voltage.

How many I/O pins are available?

23 programmable I/O lines.

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