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HomeProductsIntegrated Circuits (ICs)Specialized ICsATMEGA8535L-8JC
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ATMEGA8535L-8JC - Atmel

Manufacturer Part Number
ATMEGA8535L-8JC
Manufacturer
Atmel
Allelco Part Number
41D-ATMEGA8535L-8JC
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
7,900 pcs available, New & Original
Parts Description
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Data sheet
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Category
Integrated Circuits (ICs) > Specialized ICs
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Specifications

ATMEGA8535L-8JC Tech Specifications
Atmel - ATMEGA8535L-8JC technical specifications, attributes, parameters and parts with similar specifications to Atmel - ATMEGA8535L-8JC

Product Attribute Attribute Value
Part Number ATMEGA8535L-8JC
Package -
Description -
Stock Condition Get 7900 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

ATMEGA8535L-8JC

Manufacturer

microchip-technology

Introduction

The ATMEGA8535L-8JC is an 8-bit AVR RISC-based microcontroller that combines 8KB of in-system programmable Flash memory with read-while-write capabilities, 512 bytes of SRAM, 512 bytes of EEPROM, an 8-channel 10-bit A/D converter, and a variety of other peripherals.

Product Features and Performance

AVR 8-bit RISC-based microcontroller

8KB of in-system programmable Flash

512 bytes of SRAM

512 bytes of EEPROM

8-channel 10-bit A/D converter

Programmable Watchdog Timer with Separate On-chip Oscillator

Two 8-bit Timer/Counters with Separate Prescalers and Compare Modes

One 16-bit Timer/Counter with Separate Prescaler, Compare Mode, and Capture Mode

Programmable Serial USART

Byte-oriented 2-wire Serial Interface (I2C)

Programmable Watchdog Timer with Separate On-chip Oscillator

On-chip Analog Comparator

Product Advantages

Low power consumption

High performance

Flexible and programmable

Wide range of peripherals

Suitable for various embedded applications

Key Reasons to Choose This Product

Versatile 8-bit microcontroller with extensive feature set

Cost-effective solution for embedded systems

Robust and reliable performance

Easy integration and programming

Widely used and supported by the AVR ecosystem

Quality and Safety Features

Brown-out detection

Power-on reset

Watchdog timer

ESD and latch-up protection

Compatibility

The ATMEGA8535L-8JC is compatible with the AVR® ATmega series of microcontrollers and can be used in a variety of embedded applications.

Application Areas

Industrial control

Home automation

Automotive electronics

Medical devices

Consumer electronics

Robotics and mechatronics

Product Lifecycle

The ATMEGA8535L-8JC is an obsolete product, meaning it is no longer in active production. However, there are several alternative and equivalent models available from the AVR® ATmega series, such as the ATMEGA16, ATMEGA32, and ATMEGA64. Customers are advised to contact our website's sales team for more information on available alternatives and recommended replacement options.

Frequently Asked Questions(FAQ)

How does the ATMEGA8535L-8JC compare to other AVR ATmega microcontrollers in terms of program memory capacity and power consumption under typical 5V operation?
The ATMEGA8535L-8JC features 8KB of flash program memory, which is relatively modest compared to later ATmega models such as the ATmega328P with 32KB. This limitation makes it suitable for smaller control tasks but constrains firmware complexity. At 8MHz and operating at 5V within its specified supply range of 2.7V to 5.5V, the device consumes approximately 1.5mA active current and less than 1μA in sleep mode when using the internal oscillator, offering a balance between performance and low-power operation typical of mid-range AVRs from the early 2000s.
What are the key limitations of the ATMEGA8535L-8JC that might affect reliability in industrial environments, particularly regarding temperature tolerance and ESD protection?
The ATMEGA8535L-8JC operates only from 0°C to 70°C, which excludes many industrial or automotive applications requiring extended temperature ranges. Additionally, the device lacks robust electrostatic discharge (ESD) protection beyond standard levels, making it vulnerable to damage during handling unless proper ESD-safe practices are enforced. Its RoHS non-compliance also limits use in environmentally regulated markets where lead-free assemblies are mandatory.
In what scenarios would the ATMEGA8535L-8JC be preferable over newer ARM-based microcontrollers despite its 8-bit architecture and limited memory?
The ATMEGA8535L-8JC may still be justified in cost-sensitive, battery-powered, or legacy system upgrades where simplicity, deterministic timing, and low interrupt latency are prioritized over computational throughput. Its mature toolchain support, small footprint, and compatibility with existing AVR development boards make it suitable for embedded control tasks such as sensor interfacing, motor control, or simple communication gateways where 8KB of flash suffices and real-time responsiveness outweighs raw processing power.
How does the internal oscillator stability of the ATMEGA8535L-8JC impact timing accuracy in applications requiring precise PWM or UART baud rate generation?
The ATMEGA8535L-8JC relies on an internal RC oscillator calibrated to ±10% accuracy at 8MHz, which can introduce significant timing drift across temperature and voltage variations. This variability affects UART baud rate precision and PWM frequency consistency unless compensated via software calibration or supplemented with an external crystal. For applications demanding high timing accuracy—such as industrial communication protocols—an external 4–20MHz crystal should be used instead.
What considerations apply when integrating the ATMEGA8535L-8JC into a design that requires multiple analog inputs and digital I/O expansion?
With eight 10-bit ADC channels and 32 programmable I/O pins, the ATMEGA8535L-8JC supports moderate analog sensing needs but shares pin resources between functions. Designers must carefully allocate pins to avoid conflicts—for example, analog inputs cannot be used simultaneously as digital outputs without affecting ADC performance. External multiplexers or dedicated ADCs may be needed for more than eight simultaneous analog measurements.
Why might the PLCC package of the ATMEGA8535L-8JC pose challenges during PCB assembly compared to surface-mount alternatives like QFN or SOIC?
The 44-pin PLCC (16.6x16.6mm) is a through-hole style package incompatible with modern pick-and-place machines designed for fine-pitch SMT components. Manual soldering or specialized tooling is required, increasing assembly time, risk of damage, and labor costs. Its large size also limits board density, making it impractical for compact or high-volume consumer electronics designs where space and automation efficiency are critical.
Can the ATMEGA8535L-8JC support USB communication natively, and what alternative approaches exist if USB connectivity is required?
The ATMEGA8535L-8JC does not include a native USB controller; therefore, direct USB communication is not supported. To enable USB functionality, an external USB-to-serial bridge such as the FT232RL or a dedicated USB MCU must be added. Alternatively, UART-based protocols like RS-485 or CAN (via external transceivers) may be preferred for robust industrial communication without USB dependencies.
How does the EEPROM endurance specification of the ATMEGA8535L-8JC influence data logging applications with frequent write cycles?
The ATMEGA8535L-8JC offers 512 bytes of EEPROM with a rated endurance of 100,000 write/erase cycles per location. While sufficient for periodic configuration storage or small-scale data logging, sustained high-frequency writes—such as every-second sensor readings—will degrade memory over time. Implementing wear-leveling algorithms or buffering data in RAM before bulk writing significantly extends EEPROM lifespan in such applications.
What trade-offs arise when using the ATMEGA8535L-8JC in a 3.3V system compared to 5V operation?
Operating the ATMEGA8535L-8JC at 3.3V reduces power consumption and improves noise margin in mixed-voltage systems, but it also lowers drive strength on output pins, potentially causing signal integrity issues over long traces or with capacitive loads. Additionally, analog input ranges scale proportionally with Vcc, so full 10-bit resolution requires careful reference voltage selection. Voltage regulators must ensure clean 3.3V delivery within the 2.7–5.5V tolerance to maintain reliable operation.
How does the watchdog timer (WDT) implementation in the ATMEGA8535L-8JC enhance system robustness in unattended operations?
The integrated Watchdog Timer resets the microcontroller if software hangs due to infinite loops or unhandled exceptions. Configurable timeout periods (16ms to 8s) allow tailoring to application timing requirements. When enabled, the WDT forces a controlled recovery without user intervention, enhancing reliability in battery-powered devices, remote sensors, or embedded systems where continuous uptime is essential but software bugs are inevitable.
What are the implications of the ATMEGA8535L-8JC's lack of built-in bootloader support for field updates or firmware upgrades?
The ATMEGA8535L-8JC does not include hardware bootloader functionality, requiring external programming interfaces like SPI or parallel programming for initial flash loading. This increases development complexity and prevents over-the-air (OTA) updates without additional protocol layers. Designers must implement custom bootloaders or rely on host-based flashing tools, limiting flexibility in production and maintenance workflows.
How does the brown-out detection (BOD) feature in the ATMEGA8535L-8JC protect against unstable power supplies during startup or brownout conditions?
The BOD circuitry monitors Vcc and triggers a reset if voltage drops below a programmable threshold (typically 2.7V, 4.3V, or 4.6V), preventing erratic behavior from undervoltage conditions. This ensures predictable startup sequences and avoids corrupted memory states during power cycling, which is especially valuable in portable devices subject to battery depletion or transient voltage dips. Proper configuration minimizes false resets while maintaining system stability.
What are realistic maximum clock speeds achievable by the ATMEGA8535L-8JC when using different clock sources, and how does this affect instruction throughput?
The ATMEGA8535L-8JC is specified for up to 8MHz using its internal oscillator or external crystals. While theoretically capable of higher frequencies with stable external clocks, exceeding 8MHz risks violating timing margins and increases electromagnetic interference (EMI). At 8MHz, each instruction cycle takes 125ns, enabling ~8 MIPS peak throughput, sufficient for most real-time control tasks but inadequate for complex signal processing or high-speed data acquisition without optimization.
How does the UART/USART peripheral of the ATMEGA8535L-8JC compare to SPI and I2C in terms of data throughput and multi-device scalability?
The UART provides point-to-point serial communication with configurable baud rates up to ~38.4 kbps (limited by 8MHz clock and ±2% tolerance), suitable for PC interfacing or simple sensor links. SPI offers higher throughput (~1 Mbps effective) and master/slave topologies, ideal for flash memory or displays. I2C supports multi-drop networks with addressing but lower speed (~400 kbps), best for sensor arrays. Choice depends on distance, number of slaves, and speed requirements—SPI excels in performance, I2C in wiring efficiency.
What precautions are necessary when using the ATMEGA8535L-8JC in a noisy electrical environment to prevent spurious resets or ADC corruption?
Ground plane integrity, decoupling capacitors (100nF near Vcc/GND), and shielding of sensitive analog traces are essential to minimize noise coupling. The internal ADC benefits from stable references; adding an external precision voltage reference improves measurement accuracy. Avoid routing digital lines near analog inputs, and consider software averaging or filtering to mitigate transient interference effects on sampled data.
Can the ATMEGA8535L-8JC generate high-resolution PWM signals, and what limits its analog output capabilities?
The device includes three PWM channels (two 8-bit and one 10-bit) driven by the main 8MHz clock, allowing duty cycle resolutions up to 10 bits. However, true analog output requires external DACs or RC filters with software-controlled updates. Without hardware PWM synchronization across channels, phase alignment in motor control or audio applications demands careful timer configuration. The lack of dedicated DAC peripherals means all analog outputs must be synthesized digitally.

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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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Delivery Cost

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(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
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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.
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Atmel

ATMEGA8535L-8JC

Atmel
41D-ATMEGA8535L-8JC

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