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HomeProductsIntegrated Circuits (ICs)Specialized ICsATMEGA168PA-ANR
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ATMEGA168PA-ANR - Atmel

Manufacturer Part Number
ATMEGA168PA-ANR
Manufacturer
Atmel
Allelco Part Number
41D-ATMEGA168PA-ANR
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
6,210 pcs available, New & Original
Parts Description
TQFP-32
Data sheet
-
Category
Integrated Circuits (ICs) > Specialized ICs
RoHs Status
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Our certification
In stock: 6210

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Specifications

ATMEGA168PA-ANR Tech Specifications
Atmel - ATMEGA168PA-ANR technical specifications, attributes, parameters and parts with similar specifications to Atmel - ATMEGA168PA-ANR

Product Attribute Attribute Value
Part Number ATMEGA168PA-ANR
Package TQFP-32
Description TQFP-32
Stock Condition Get 6210 pcs available quantity at Allelco
Payment PayPal / TT / Credit Card / Western Union
Allelco Certifications ESD / ISO 9001 / ISO 13485 / ISO 28000
Product Attribute Attribute Value
Manufacturer Atmel
RoHs Status -
Warranty 100% Perfect Functions
Transport port Hong Kong
Shipping by DHL / FedEx / UPS / TNT / SF Express
RFQ Email info@allelco.com

Parts Introduction

Manufacturer Part Number

ATMEGA168PA-ANR

Manufacturer

microchip-technology

Introduction

The ATMEGA168PA-ANR is a powerful 8-bit microcontroller from Microchip Technology's AVR® ATmega series. It is designed for a wide range of embedded applications, offering a high-performance, low-power architecture with advanced peripherals and a comprehensive set of features.

Product Features and Performance

8-bit AVR® RISC-based microcontroller

20MHz operating frequency

16KB of in-system programmable FLASH program memory

1KB of SRAM and 512 bytes of EEPROM

Advanced peripheral set including I²C, SPI, UART/USART, PWM, and Watchdog Timer

8-channel 10-bit ADC

Internal oscillator with ±1% accuracy

Product Advantages

Low power consumption for battery-powered applications

Flexible clocking options for optimized performance and power efficiency

Wide operating voltage range of 1.8V to 5.5V

Extensive peripheral set for diverse embedded systems

Key Reasons to Choose This Product

High-performance and energy-efficient 8-bit architecture

Comprehensive set of on-chip peripherals for versatile applications

In-system programmable FLASH memory for easy firmware updates

Robust and reliable design with advanced safety features

Pin-compatible with other ATmega microcontrollers for easy migration

Quality and Safety Features

Brown-out detection and reset

Power-on reset

Watchdog timer for system integrity

Operating temperature range of -40°C to 105°C

Compatibility

The ATMEGA168PA-ANR is compatible with other AVR® ATmega series microcontrollers, allowing for easy design migration and system upgrades.

Application Areas

Embedded systems

Industrial automation and control

Home automation and appliances

Sensor and measurement devices

Portable and battery-powered applications

Product Lifecycle

The ATMEGA168PA-ANR is an active product in Microchip's portfolio. There are equivalent and alternative models available, such as the ATMEGA328P and ATMEGA328PA, which offer similar features and performance. For more information on available options, please contact our website's sales team.

Frequently Asked Questions(FAQ)

How does the ATMEGA168PA-ANR's operating voltage range of 1.8V to 5.5V influence power management decisions in battery-powered embedded systems?
The wide supply voltage tolerance enables flexible integration into systems with varying power sources, such as coin-cell batteries or USB-powered devices. At 1.8V operation, current consumption drops significantly compared to 5.5V, which extends battery life in low-power modes—critical for wearable or remote monitoring applications. Designers can leverage this without external voltage regulation in many cases, simplifying board layout and reducing component count.
What are the implications of using the ATMEGA168PA-ANR’s internal oscillator at 20MHz versus an external crystal in terms of timing accuracy and system cost?
While the internal oscillator provides sufficient precision (±1% typical) for most control tasks like PWM generation or UART baud rate matching, it lacks the stability required for high-frequency communication protocols or time-critical applications. An external crystal improves frequency accuracy but increases BOM cost, PCB footprint, and assembly complexity. For prototyping or cost-sensitive designs, the internal oscillator is often adequate.
In what scenarios would the ATMEGA168PA-ANR be preferred over other AVR microcontrollers like the ATMEGA328P, considering memory and pin compatibility?
The ATMEGA168PA-ANR offers a balance between the ATMEGA328P (larger RAM and EEPROM) and smaller AVRs, making it suitable for mid-complexity projects requiring 16KB flash and 23 I/O lines. Unlike the 328P, it supports lower-voltage operation down to 1.8V, enabling use in 3.3V-only environments without level shifting. Its pinout is compatible with many existing designs, allowing migration paths while offering improved power efficiency.
How should designers account for the ATMEGA168PA-ANR’s Moisture Sensitivity Level (MSL) rating of 3 when planning production runs and storage conditions?
With an MSL3 classification indicating sensitivity to moisture-induced damage during reflow soldering, the ATMEGA168PA-ANR must be stored under dry conditions (typically <60% RH) and used within 168 hours after baking if exposed. Manufacturers follow JEDEC J-STD-033 for handling; failure to comply risks pop-corning during thermal cycling, especially in lead-free processes above 245°C peak reflow temperature.
Can the ATMEGA168PA-ANR reliably drive high-current loads directly from its GPIO pins, and what precautions apply when interfacing with peripherals like relays or LEDs?
No—each GPIO pin on the ATMEGA168PA-ANR is rated for a maximum of 40mA total current sourcing/sinking across all ports, with individual pins typically limited to 20–40mA depending on package and voltage. Driving inductive loads like relays requires flyback diodes and transistor buffers. For LED arrays, current-limiting resistors or external drivers ensure longevity and prevent latch-up due to excessive transient currents.
What trade-offs exist between using the ATMEGA168PA-ANR’s built-in brown-out detection (BOD) versus relying solely on software-based voltage monitoring?
Enabling BOD prevents unintended resets during gradual voltage drops, improving system reliability in noisy power supplies. However, configuring BOD levels (e.g., 2.7V, 4.3V) consumes a small amount of power and may conflict with ultra-low-power sleep modes if not managed carefully. Software monitoring avoids hardware overhead but risks missing rapid dips that cause erratic behavior.
Why might the ATMEGA168PA-ANR’s 1KB SRAM limit application scalability, and how can developers mitigate stack overflow or data loss risks?
With only 1KB of volatile RAM, large lookup tables, deep recursion, or dynamic allocation can exhaust memory quickly. Best practices include minimizing global variables, using PROGMEM for constants, optimizing data structures, and avoiding function call chains exceeding available stack space—especially in interrupt service routines where context preservation adds overhead.
How does the ATMEGA168PA-ANR support real-world signal acquisition given its 8-channel, 10-bit ADC configuration?
The integrated ADC provides sufficient resolution for analog sensors such as temperature, light intensity, or potentiometers in consumer electronics. However, 10-bit precision (~3.9mV steps at 5V) may be insufficient for high-accuracy measurements; oversampling or external ADCs are preferable for scientific instrumentation. Proper grounding and decoupling near analog inputs improve noise immunity in industrial settings.

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Customer Reviews

Evaluation: 10 Articles

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

  • Daic***K.
    Mar 23, 2026

    Very good. No issue after long time testing.

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Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
  • QC (Quality Warranty)
  • Payment Support
  • Packaging
  • Certifications & Memberships

QC (Quality Warranty)

Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
This is achieved through our commitment to the continual improvement of our processes, services, and products.


Strict quality inspection builds a solid foundation for electronic component quality.
  1. Visual inspection
  2. Performance testing and reliability verification
  3. Standardized full-process testing
  4. Precise control of every parameter
We eliminate defective components and ensure the stable operation of electronic devices through professional quality standards.
Quality Inspection
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Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.
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Packaging

Electrostatic Discharge Protection and Handling

All electrostatic-sensitive components are handled in accordance with electrostatic discharge control procedures. The products are hermetically sealed in anti-static safe packaging to prevent electrostatic damage. Appropriate labeling is also applied for identification and traceability. This ensures product integrity during storage, handling and transportation.


ESD

Certifications & Memberships

Third-party certified, strict quality control. Our certification
  • ISO 9001: 2015
  • ISO 13485: 2016
  • ISO 14001: 2015
  • ISO 28000: 2007
  • ISO 45001: 2018
  • GB/T 27922-2011
  • SMTA
  • IPC
  • ESD
  • PSMA
Atmel

ATMEGA168PA-ANR

Atmel
41D-ATMEGA168PA-ANR

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