ATMEGA8L-8MU - 8-Bit 8MHz 8KB MCU | Microchip Technology
料号： ATMEGA8L-8MU ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 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 概述
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.
直接替换替代料： ATMEGA8L-8MU ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： ATMEGA8L-8MU （相同外形与封装尺寸） ——差异在于 Package, Timers/Counters, EEPROM Size, Program Memory Size, EEPROM.
快速对比工具——选择替代料号进行并排对比：
ATMEGA8A-MU
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$0.7 / 个
查看数据手册 →ATMEGA8-16MU
✅ 直接替换✓ 有现货
$1.62 / 个
查看数据手册 →ATMEGA8U2-MUR
✅ 直接替换✓ 有现货
$1.94 / 个
查看数据手册 →ATMEGA8L-8MU 最大额定值与电气特性
| Product Type | 8-bit AVR RISC-based microcontroller |
| 最大时钟频率 | 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 |
| 封装 | 32-VQFN, 5 mm × 5 mm |
| 安装类型 | 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 引脚配置指南
ATMEGA8L-8MU（32-vqfn, 5 mm × 5 mm 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： ATMEGA8L-8MU.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ATMEGA8L-8MU 适用于 6 应用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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
推荐产品汇总
工程参考数据： ATMEGA8L-8MU ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | 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 |
关键差异点
- Low-power-oriented 8 MHz AVR configuration （对比 ATMEGA8-16MU)
- Verified 8 KB Flash, 512-byte EEPROM, and 1 KB SRAM resource set （对比 ATMEGA8U2-MU)
- Compact 32-VQFN surface-mount implementation （对比 ATMEGA8L-8PU)
设计说明
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.
合规信息
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.
