ATMEGA8L-8MU - 8-Bit 8MHz 8KB MCU | Microchip Technology
部品番号: ATMEGA8L-8MU ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $1.123 | $1.12 |
| 10 | $1.123 | $11.23 |
| 100 | $1.123 | $112.30 |
| 500 | $1.123 | $561.50 |
| 1,000 | $1.123 | $1,123.00 |
ATMEGA8L-8MU 概要
What is an 8-bit microcontroller? An 8-bit microcontroller is a programmable semiconductor that executes instructions using an 8-bit data path. The ATMEGA8L belongs to the AVR family, a RISC-based architecture designed for efficient embedded control. Its memory hierarchy includes Flash for firmware, SRAM for working data, and EEPROM for nonvolatile parameter storage, making it suitable for compact control, sensing, communications, and automation products.
Key verified features include 8 KB of ISP Flash, read-while-write capability, 512 bytes of EEPROM, 1 KB of SRAM, 23 I/O lines, 32 general-purpose working registers, and three flexible timer/counters. The L designation identifies the low-power version, while the -8 speed grade and M package code indicate the 8 MHz and surface-mount configuration. The 32-VQFN package supports dense PCB layouts but requires careful thermal-pad and assembly planning.
The device is based on a high-performance, low-power AVR 8-bit RISC core. Its memory arrangement allows firmware to be programmed and reprogrammed through ISP, while the peripheral set supports embedded timing, serial communication, analog comparison, and digital control tasks. Exact operating-voltage, current, temperature, timer-channel, and package-dimension values are not present in the supplied web data and should be confirmed from the official datasheet before design release.
Typical applications include compact sensor controllers, low-cost industrial control modules, battery-operated instruments, LED and display controllers, communications equipment, and small automation systems. The 23 I/O lines provide useful connectivity for buttons, sensors, relays, indicators, and serial interfaces when the board design fits within the device’s electrical and timing limits.
For PCB implementation, use the manufacturer’s recommended VQFN land pattern, provide a stable decoupling network close to the supply pins, and connect the exposed pad according to the datasheet’s thermal and layout guidance. Verify programming, clock, reset, and unused-pin requirements before production. This page combines verified distributor data, source links, application guidance, and explicitly marked data gaps rather than guessing unspecified electrical values.
ドロップイン代替品: ATMEGA8L-8MU — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: ATMEGA8L-8MU （同一形状・フットプリント） — 相違点: Package, Timers/Counters, EEPROM Size, Program Memory Size, EEPROM.
クイック比較ツール — 並列比較する代替部品を選択:
ATMEGA8A-MU
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$0.7 / 個
データシートを見る →ATMEGA8-16MU
✅ ドロップイン✓ 在庫あり
$1.62 / 個
データシートを見る →ATMEGA8U2-MUR
✅ ドロップイン✓ 在庫あり
$1.94 / 個
データシートを見る →ATMEGA8L-8MU 最大定格＆電気的特性
| Product Type | 8-bit AVR RISC-based microcontroller |
| 最大クロック周波数 | 8 MHz |
| Program Memory | 8 KB Flash |
| Program Memory Organization | 4K × 16 bits |
| EEPROM | 512 bytes |
| SRAM | 1 KB |
| General-Purpose I/O Lines | 23 |
| General-Purpose Working Registers | 32 |
| Timer/Counter Blocks | 3 |
| パッケージ | 32-VQFN, 5 mm × 5 mm |
| 実装タイプ | Surface mount |
| Core Architecture | AVR 8-bit RISC |
| Programming | In-system serial programming |
| Flash Feature | Read-while-write capable |
ATMEGA8L-8MU 32-vqfn, 5 mm × 5 mm ピン配置ガイド
ATMEGA8L-8MU (32-vqfn, 5 mm × 5 mm パッケージ) のピン配置。 このデジタルICには、GPIO、通信インターフェース (UART、SPI、I2C)、および電源ピンが含まれています。代替ピン機能と設定オプションについては、メーカーのデータシートを参照してください。組み込みシステム設計とPCBレイアウトに不可欠です。
詳細なピン配置データはありません: ATMEGA8L-8MU.
詳細は データシート をご参照ください。
主な用途
ATMEGA8L-8MU の用途: 6 件s: Low-Power Sensor Controller, Compact Industrial Control Module, Battery-Operated Instrumentation, LED and Display Control, Serial Communications Equipment, Small Automation Controller.
Low-Power Sensor Controller
The ATMEGA8L-8MU fits compact sensor controllers because its low-power AVR architecture, 8 MHz clock, 8 KB Flash, and 23 I/O lines can support sensor acquisition, threshold decisions, and local actuator control without a high-end processor. Place the device between the sensor interface and a small display or indicator network, then use its 512 bytes of EEPROM for calibration constants that must survive power cycles. The 32-VQFN package helps preserve board area in handheld or distributed sensing equipment. Confirm the device’s verified sleep current, active current, supply range, and ADC-related requirements before finalizing the power budget and sensor signal chain.
おすすめ
Compact Industrial Control Module
ATMEGA8L-8MU can serve as the central controller in a small industrial module where digital inputs, status LEDs, relays, and simple timing functions must coexist on a limited board area. Its three flexible timer/counters and 23 general-purpose I/O lines provide resources for debouncing inputs, generating timing sequences, and driving indicators. The 8 KB Flash footprint is appropriate for focused control firmware rather than complex connectivity stacks. Use the manufacturer’s recommended VQFN footprint and exposed-pad layout, provide local supply decoupling, and validate isolation, surge, and grounding requirements at the system level.
おすすめ
Battery-Operated Instrumentation
For a battery-operated instrument, the ATMEGA8L-8MU offers an 8-bit RISC control platform with modest memory requirements and a low-power-oriented part designation. It can manage a front-panel display, keypad inputs, measurement sequencing, and configuration storage while keeping the firmware footprint manageable. The 512-byte EEPROM is useful for serial numbers, calibration offsets, or user settings, while 1 KB of SRAM supports short-lived control data. Battery life still depends on the verified operating current, sleep modes, display load, and sensor duty cycle; these values are not supplied here and must be measured or confirmed from the manufacturer datasheet.
おすすめ
LED and Display Control
The ATMEGA8L-8MU is appropriate for LED status panels, small displays, and keypad-driven user interfaces because its I/O resources and timer blocks can coordinate multiple outputs and timing events. Firmware can handle button scanning, display refresh, indicator patterns, and basic product-state logic without requiring a larger MCU. The compact 32-VQFN package is useful when display-driver circuitry and connectors compete for board area. Before layout release, verify which I/O pins are multiplexed with programming or peripheral functions and check the official electrical limits for LED current, supply voltage, and signal timing.
おすすめ
Serial Communications Equipment
ATMEGA8L-8MU can be used in compact serial-communications equipment where a low-cost AVR controller handles framing, acknowledgments, status reporting, and local configuration. Its 8 KB Flash is suitable for focused protocol firmware, and the I/O count can support a UART interface, indicators, and control inputs. The supplied data does not specify the exact UART feature set or operating limits, so protocol timing and peripheral availability must be confirmed from the official ATMEGA8L documentation. Keep the serial lines properly conditioned, respect the device’s I/O voltage limits, and include an ISP-accessible programming path for field updates.
おすすめ
Small Automation Controller
The ATMEGA8L-8MU can act as a small automation controller for local sequences involving sensors, outputs, timing, and operator input. Its three flexible timer/counters support periodic tasks, while 32 working registers and 1 KB of SRAM provide a workable control environment for compact firmware. The part is especially relevant where a full processor is unnecessary and a deterministic AVR-based controller is preferred. Build a test fixture around reset, ISP programming, clock behavior, and exposed-pad continuity. Confirm supply and I/O specifications before connecting relays, motors, or other inductive loads, and provide suitable protection and isolation outside the MCU.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: ATMEGA8L-8MU — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | ATMEGA8A-MU | ATMEGA8-16MU | ATMEGA8U2-MU |
|---|---|---|---|---|
| Package | 32-VQFN (5x5) | 32-VQFN (5x5) | 32-VQFN EP | 32-VQFN EP |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
主な差別化要因
- Low-power-oriented 8 MHz AVR configuration （vs ATMEGA8-16MU)
- Verified 8 KB Flash, 512-byte EEPROM, and 1 KB SRAM resource set （vs ATMEGA8U2-MU)
- Compact 32-VQFN surface-mount implementation （vs ATMEGA8L-8PU)
設計ノート
Use the official Microchip or Atmel 32-VQFN land pattern rather than generating a footprint from the package name alone. Confirm pad length, exposed-pad geometry, solder-mask settings, and paste-aperture recommendations against the manufacturer drawing. Place the decoupling capacitor close to the supply pins and route the exposed pad to the required ground or thermal plane. Because this is a compact 5 mm × 5 mm package, assembly capability and stencil design should be reviewed before release.
Confirm the exact operating-voltage range, I/O voltage limits, current ratings, and power-consumption modes from the official datasheet before connecting external circuitry. The supplied web data identifies an 8 MHz speed grade and low-power AVR family but does not provide verified active or sleep current values. Calculate the system budget using measured operating conditions rather than assuming that the L designation alone guarantees a particular battery life. Include brownout, reset, clock, and programming-interface requirements in the supply design.
Do not substitute a similarly named ATmega solely because it has a 32-lead VQFN package. Verify the pin functions, exposed-pad connection, supply limits, clock rating, memory map, peripheral allocation, and programming interface for ATMEGA8A-MU, ATMEGA8-16MU, or ATMEGA8U2-MU. The same-package comparison candidates are not fully characterized in the supplied data. A prototype should boot, program, exercise all used I/O pins, and operate across the intended voltage and temperature conditions before a drop-in replacement is approved.
コンプライアンス情報
The supplied verified data does not explicitly state compliance for RoHS, REACH, AEC-Q100, lead-free status, halogen-free status, or conflict-minerals compliance. These fields remain unknown pending manufacturer or distributor documentation.
