ATMEGA2560-16AI - 16MHz 256KB AVR MCU | Microchip
料号： ATMEGA2560-16AI ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
ATMEGA2560-16AI 概述
An 8-bit AVR microcontroller is a programmable integrated circuit designed to execute compact embedded-control firmware using the AVR reduced-instruction-set computer architecture. The ATMEGA2560 belongs to the broader microcontroller hierarchy: MCU, embedded processor, digital controller, and semiconductor. Its combination of program memory, SRAM, EEPROM, timers, serial interfaces, and GPIO makes it useful where a single device must coordinate displays, sensors, actuators, communications, and timing functions.
The verified product information identifies 256 KB of ISP flash memory, 8 KB SRAM, 4 KB EEPROM, 86 general-purpose I/O lines, 32 working registers, a real-time counter, and six flexible timer/counter resources. The 16 MHz speed suffix indicates the 16 MHz operating class, while the I package designation is associated with the listed 100-pin TQFP ordering variant. The device is based on the AVR architecture and is widely recognized in Arduino Mega-class embedded platforms, although application support should be verified for a specific board and firmware environment.
Typical applications include industrial automation, robotics, data acquisition, environmental monitoring, embedded instrumentation, and communication controllers. The large I/O count can simplify designs that would otherwise require multiple smaller controllers, while the 256 KB flash capacity supports larger firmware images than many entry-level AVR devices. The ATMEGA2560-16AI is therefore useful when system integration, peripheral count, and software capacity matter more than using the smallest or lowest-power MCU.
Designers should confirm the exact pinout, power requirements, clock configuration, peripheral multiplexing, programming interface, and package details from the manufacturer datasheet before layout. Decoupling, oscillator routing, reset design, and unused-pin treatment should follow the relevant hardware guidance. Because the supplied data does not include a verified price table or complete electrical limit table, those values are not inferred here.
直接替换替代料： ATMEGA2560-16AI ——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： ATMEGA2560-16AI （相同外形与封装尺寸） ——差异在于 Package, ADC Channels, ADC Resolution, EEPROM Size, Maximum Clock Frequency.
快速对比工具——选择替代料号进行并排对比：
ATMEGA2560-16AUR
✅ 直接替换📋 参考替代料（不在目录中）
ATMEGA2560-16AU
✅ 直接替换✓ 有现货
$8.87 / 个
查看数据手册 →ATMEGA2560-16AI
✅ 直接替换✓ 有现货
联系询价
查看数据手册 →ATMEGA2560V-8CUR
✅ 直接替换✓ 有现货
$6.12 / 个
查看数据手册 →ATMEGA640-16CU
✅ 直接替换✓ 有现货
$8.61 / 个
查看数据手册 →ATMEGA2560-16AI 最大额定值与电气特性
| Product Type | 8-bit AVR RISC-based microcontroller |
| Architecture | AVR 8-bit RISC |
| 最大时钟频率 | 16 MHz |
| Flash Memory | 256 KB ISP flash |
| SRAM | 8 KB |
| EEPROM | 4 KB |
| General-Purpose I/O Lines | 86 |
| General-Purpose Working Registers | 32 |
| Timer/Counter Resources | 6 flexible timer/counter resources |
| Real-Time Counter | Available |
| 电源电压 | 5 V |
| 封装 | 100-TQFP |
| Package Pin Count | 100 pins |
| 安装类型 | Surface Mount |
| Program Memory Interface | In-system programming |
ATMEGA2560-16AI 100 pins 引脚配置指南
ATMEGA2560-16AI（100 pins 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： ATMEGA2560-16AI.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ATMEGA2560-16AI 适用于 6 应用s: Industrial Automation Controller, Robotics and Motion Sequencing, Environmental Data Acquisition, Embedded Test and Measurement, Communication Gateway, Embedded Instrumentation and Control Panel.
Industrial Automation Controller
The ATMEGA2560-16AI fits industrial automation controllers that need many digital connections without immediately splitting control across multiple processors. Its verified 86 general-purpose I/O lines can be assigned to limit switches, relay-control inputs, status indicators, and actuator commands, while the 16 MHz AVR core provides a straightforward real-time control platform. The 256 KB flash memory allows a larger supervisory application than typical entry-level AVRs, and the 8 KB SRAM supports protocol buffers and state variables. In a practical design, the MCU would sequence machine states, read sensors, drive outputs, and monitor safety-related signals through external hardware. The MCU is not a safety controller by itself; industrial deployment requires verified isolation, watchdog implementation, fail-safe output stages, transient protection, and compliance with the applicable equipment requirements.
推荐
Robotics and Motion Sequencing
The ATMEGA2560-16AI is suitable for robot controllers, test fixtures, and multi-axis sequencing systems because it combines a 16 MHz AVR core with 86 I/O lines and six flexible timer/counter resources. The timers can support timing-intensive tasks such as pulse generation, input capture, or periodic control updates when configured in firmware. Its 256 KB flash capacity is useful for motion tables, communication protocols, and supervisory logic, while the 8 KB SRAM can hold working state and short message buffers. A robot controller would typically use the MCU for sensor aggregation, actuator sequencing, emergency-state handling, and communication with a higher-level processor. Designers should verify timer pin multiplexing and peripheral conflicts in the datasheet, and should not assume that a generic Arduino shield mapping is electrically identical to a custom industrial robot board.
推荐
Environmental Data Acquisition
The ATMEGA2560-16AI can act as the central controller for environmental monitoring systems that combine temperature, humidity, air-quality, light, and flow sensors. Its 86 I/O lines provide ample digital and serial-interface capacity for sensor selection, status LEDs, local displays, and alarm outputs, while the 256 KB flash region supports sampling, filtering, calibration, and communications firmware. The 8 KB SRAM can hold recent measurements and protocol buffers, and the EEPROM can retain configuration values when the application requires nonvolatile settings. A typical design would sample sensors periodically, validate readings, apply calibration, drive a local display, and forward data over a serial or network interface. Sensor accuracy, timing accuracy, and environmental limits depend on the external sensors and analog front end; the MCU specification alone does not establish measurement performance.
推荐
Embedded Test and Measurement
The ATMEGA2560-16AI is useful as a measurement and control MCU in bench instruments, production fixtures, and automated test equipment. Its 256 KB flash memory accommodates measurement algorithms, calibration tables, test sequences, and communication stacks, while its 86 I/O lines support digital stimuli, limit detection, relay drivers, front-panel controls, and status reporting. The six flexible timer/counter resources provide hardware timing resources for pulse generation, frequency measurement, or capture-based tests when their alternate functions are assigned correctly. A fixture controller could coordinate DUT power, apply stimulus, acquire results, and communicate with a host computer. Signal-chain accuracy is external to the MCU, so analog front ends, protection networks, grounding, and calibration procedures must be designed independently and tested with the complete instrument.
推荐
Communication Gateway
ATMEGA2560-16AI can serve as a small communication gateway when a design needs to translate between local serial interfaces, GPIO status, and a higher-level communications controller. The 256 KB flash memory supports protocol stacks and gateway configuration, while the 8 KB SRAM provides space for message buffering and temporary protocol state. Its 86 I/O lines allow the gateway to expose link status, configuration switches, reset control, and diagnostic outputs. An application may bridge a sensor bus, convert a legacy peripheral interface, or provide a local command endpoint before forwarding data to Ethernet or another network processor. The selected UART, SPI, USART, or other peripheral resources must be mapped without conflicts, and timing, isolation, ESD protection, and cable-level requirements should be verified for the installed communication medium.
推荐
Embedded Instrumentation and Control Panel
The ATMEGA2560-16AI fits embedded control panels that need a combination of display control, keypad input, indicator outputs, and supervisory logic. Its high I/O count reduces the need for additional I/O expanders when the panel uses multiple sensors, switches, and status lines, while the 16 MHz clock supports responsive menu and event handling. The 256 KB flash region is valuable when the panel includes calibration, menu logic, logging, and multiple communication routines, and the EEPROM can retain setup values. A practical panel would read controls, update indicators, monitor alarm inputs, and exchange data with a host or field bus. Display electrical characteristics, button debouncing, ESD protection, and long-term retention requirements are outside the core MCU specification and should be validated in the complete hardware design.
推荐
推荐产品汇总
工程参考数据： ATMEGA2560-16AI ——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 | ATMEGA2560-16AUR | ATMEGA2560-16AU | ATMEGA2560V-8CU | ATMEGA640-16CU |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Maximum Clock Frequency | 16 MHz | 16 MHz | 16 MHz | 8 MHz | 16 MHz |
| Flash Memory | 256 KB ISP flash | 256 KB | 256 KB | 256 KB | 256 KB |
| SRAM | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB |
| EEPROM | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB |
关键差异点
- High verified I/O count （对比 ATMEGA640-16CU)
- 16 MHz operating class （对比 ATMEGA2560V-8CU)
- Verified memory and timer resources （对比 ATMEGA2560-16AUR)
- Package identification （对比 ATMEGA640-16CU)
设计说明
Start the layout by using the official Microchip package drawing for the 100-TQFP device. Reserve the power and ground connections according to the datasheet, place decoupling capacitors close to the relevant supply pins, and route the clock and programming signals away from noisy switching nodes. Because the supplied verified data does not include a pin-by-pin diagram, do not assign signals from generic Arduino Mega diagrams until they have been checked against the exact package variant.
Validate the complete power tree against the manufacturer electrical limits before powering the board. The verified distributor description identifies a 5 V part, but that value does not by itself define allowable voltage tolerance, current limits, regulator dissipation, or startup behavior. Use a supply with appropriate transient margin, verify the decoupling network, and measure the actual rail during programming and normal operation rather than relying only on the nominal supply label.
Plan the 86 available I/O lines around the actual peripheral multiplexing requirements. UART, timer, interrupt, analog, and programming functions can share pins, so a nominal GPIO count does not guarantee that every line can be used independently. Create a pin-assignment matrix in firmware planning, reserve ISP or boot programming pins, and check that indicator LEDs, relays, and external interfaces do not conflict with oscillator or reset functions.
Do not treat related ATmega2560 order codes as automatic substitutes. The supplied results mention ATMEGA2560-16AUR, ATMEGA2560-16AU, ATMEGA2560V-8CU, and ATMEGA640-16CU, but they do not provide enough verified information to establish exact pin, temperature, or package equivalence for every option. Confirm the official ordering table, package drawing, memory map, electrical limits, and programming requirements before substituting any part in an existing PCB design.
合规信息
The supplied verified results identify Microchip Technology as the manufacturer and list the product as an 8-bit 16 MHz AVR with 256 KB flash, 8 KB SRAM, and 4 KB EEPROM. They do not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. Compliance fields therefore remain unknown rather than being inferred.
