ATMEGA2560V-8AU - 256KB Flash, 1.8-5.5V AVR MCU 8MHz | Microchip
Артикул: ATMEGA2560V-8AU ✓ Активен| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $13.72 | $13,72 |
| 10 | $12.35 | $123,50 |
| 100 | $10.99 | $1.099,00 |
| 500 | $9.85 | $4.925,00 |
| 1.000 | $8.95 | $8.950,00 |
ATMEGA2560V-8AU Обзор
A microcontroller (MCU) is a single-chip computer that combines a CPU core, program and data memory, and I/O peripherals such as timers, serial interfaces and interrupt logic on one die. Within the embedded-computing hierarchy the ATmega2560 family sits in the mainstream 8-bit flash MCU class, sitting above smaller ATmega parts such as the ATmega328P and below 32-bit ARM Cortex-M devices when applications demand very large GPIO and peripheral counts rather than raw compute throughput.
Key features include the advanced AVR RISC architecture executing 131 powerful instructions, mostly in a single clock cycle, with 32 general-purpose working registers and fully static operation for up to 16 MIPS throughput at 16 MHz (8 MHz maximum for the V low-voltage grade). The device integrates six flexible timer/counters with compare modes and PWM, four USARTs, a byte-oriented 2-wire serial interface (TWI/I2C), an SPI serial interface, a real-time counter with separate oscillator, a watchdog timer and a 16-channel 10-bit ADC. In-system programming (ISP) and self-programming support enable field firmware updates without removing the chip.
The V suffix denotes the extended 1.8 V to 5.5 V operating range, allowing direct operation from two alkaline cells or a single lithium cell with a boost converter, which makes the ATMEGA2560V-8AU attractive for battery-powered instruments. The Harvard-architecture dual-memory bus keeps program fetch and data access independent, sustaining efficient C-compiled code density, and the on-chip RC oscillator plus XTAL1/XTAL2 crystal inputs reduce external component count while supporting accurate USART baud rates.
Typical applications include industrial automation controllers with large I/O counts, 3D-printer mainboards (the Arduino Mega 2560 platform), robotics controllers, and multi-port data loggers that must exploit four USART channels plus a wide supply range. When designing with this part, consult the maximum clock rate versus VCC curve because at 1.8 V the maximum guaranteed clock drops well below 8 MHz.
This page synthesizes distributor pricing, drop-in same-family alternatives, a full 100-pin TQFP pinout, and practical design notes not consolidated in the manufacturer datasheet. Pricing is referenced as of 2026-09-17.
Аналоги без доработки для ATMEGA2560V-8AU — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с ATMEGA2560V-8AU (тот же форм-фактор и посадочное место) — отличается по Package, Flash Memory, RoHS Status, Timers/Counters, ADC.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
ATMEGA2560V-8CUR
✅ Прямая замена✓ В наличии
$6.12 / шт.
Открыть даташит →ATMEGA2560-16AU
✅ Прямая замена✓ В наличии
$8.87 / шт.
Открыть даташит →ATMEGA2560-16CU
✅ Прямая замена ⚠️ Характеристики не проверены✓ В наличии
$11.75 / шт.
Открыть даташит →ATMEGA1280-16AU
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
ATMEGA1281-16AU
✅ Прямая замена✓ В наличии
$8.27 / шт.
Открыть даташит →ATMEGA2560V-8AU Максимальные параметры и электрические характеристики
| Device Family | ATmega2560 (megaAVR) |
| Core | 8-bit AVR RISC |
| Instruction Set | 131 instructions, mostly single-cycle |
| Max Throughput | 16 MIPS at 16 MHz |
| Program Flash Memory | 256 KB In-System Programmable |
| SRAM | 8 KB |
| EEPROM | 4 KB |
| General Purpose I/O Lines | 86 |
| Operating Voltage (VCC) | 1.8 V to 5.5 V |
| Maximum Clock (V grade) | 8 MHz |
| Рабочая температура | -40 C to +85 C (industrial) |
| Timer/Counters | 6 (with compare modes and PWM) |
| USART | 4 channels |
| Serial Interfaces | I2C/TWI, SPI |
| ADC | 16-channel, 10-bit |
| Корпус | 100-pin TQFP |
| Тип монтажа | Surface Mount |
| Статус RoHS | Compliant |
Конфигурация выводов ATMEGA2560V-8AU
| Контакт 1 | PG5 (OC0B) — Port G bit 5 / Timer0 compare B output |
| Контакт 2 | PE0 (RXD0/PCINT8) — Port E bit 0 / USART0 RX / pin change interrupt |
| Контакт 3 | PE1 (TXD0) — Port E bit 1 / USART0 TX |
| Контакт 4 | PE2 (AIN0/XCK0) — Port E bit 2 / analog comp in / USART0 clock |
| Контакт 5 | PE3 (AIN1/OC3A) — Port E bit 3 / analog comp in / Timer3 compare A |
| Контакт 6 | PE4 (OC3B/INT4) — Port E bit 4 / Timer3 compare B / external interrupt |
| Контакт 7 | PE5 (OC3C/INT5) — Port E bit 5 / Timer3 compare C / external interrupt |
| Контакт 8 | PE6 (T3/INT6) — Port E bit 6 / Timer3 clock input / external interrupt |
| Контакт 9 | PE7 (CLKO/ICP3) — Port E bit 7 / system clock output / Timer3 input capture |
| Контакт 10 | VCC — Digital supply voltage |
| Контакт 11 | GND — Digital ground |
| Контакт 12 | PH0 (RXD2) — Port H bit 0 / USART2 RX |
| Контакт 13 | PH1 (TXD2) — Port H bit 1 / USART2 TX |
| Контакт 14 | PH2 (XCK2) — Port H bit 2 / USART2 clock |
| Контакт 15 | PH3 (OC4A) — Port H bit 3 / Timer4 compare A output |
| Контакт 16 | PH4 (OC4B) — Port H bit 4 / Timer4 compare B output |
| Контакт 17 | PH5 (OC4C) — Port H bit 5 / Timer4 compare C output |
| Контакт 18 | PH6 (OC2B) — Port H bit 6 / Timer2 compare B output |
| Контакт 19 | PB0 (SS0/PCINT0) — Port B bit 0 / SPI0 slave select / pin change int |
| Контакт 20 | PB1 (SCK0/PCINT1) — Port B bit 1 / SPI0 clock / pin change int |
| Контакт 21 | PB2 (MOSI0/PCINT2) — Port B bit 2 / SPI0 MOSI / pin change int |
| Контакт 22 | PB3 (MISO0/PCINT3) — Port B bit 3 / SPI0 MISO / pin change int |
| Контакт 23 | PB4 (OC2A/PCINT4) — Port B bit 4 / Timer2 compare A / pin change int |
| Контакт 24 | PB5 (OC1A/PCINT5) — Port B bit 5 / Timer1 compare A / pin change int |
| Контакт 25 | PB6 (OC1B/PCINT6) — Port B bit 6 / Timer1 compare B / pin change int |
| Контакт 26 | PB7 (OC0A/OC1C/PCINT7) — Port B bit 7 / Timer0 compare A / Timer1 compare C |
| Контакт 27 | PH7 (T4) — Port H bit 7 / Timer4 clock input |
| Контакт 28 | PG3 (TOSC2) — Port G bit 3 / RTC oscillator output |
| Контакт 29 | PG4 (TOSC1) — Port G bit 4 / RTC oscillator input |
| Контакт 30 | RESET — Reset input (active low) |
| Контакт 31 | VCC — Digital supply voltage |
| Контакт 32 | GND — Digital ground |
| Контакт 33 | XTAL2 — Crystal oscillator output |
| Контакт 34 | XTAL1 — Crystal oscillator input |
| Контакт 35 | PL0 (ICP4) — Port L bit 0 / Timer4 input capture |
| Контакт 36 | PL1 (ICP5) — Port L bit 1 / Timer5 input capture |
| Контакт 37 | PL2 (T5) — Port L bit 2 / Timer5 clock input |
| Контакт 38 | PL3 (OC5A) — Port L bit 3 / Timer5 compare A output |
| Контакт 39 | PL4 (OC5B) — Port L bit 4 / Timer5 compare B output |
| Контакт 40 | PL5 (OC5C) — Port L bit 5 / Timer5 compare C output |
| Контакт 41 | PL6 — Port L bit 6 / digital I/O |
| Контакт 42 | PL7 — Port L bit 7 / digital I/O |
| Контакт 43 | PD0 (SCL/INT0) — Port D bit 0 / I2C clock / external int |
| Контакт 44 | PD1 (SDA/INT1) — Port D bit 1 / I2C data / external int |
| Контакт 45 | PD2 (RXD1/INT2) — Port D bit 2 / USART1 RX / external int |
| Контакт 46 | PD3 (TXD1/INT3) — Port D bit 3 / USART1 TX / external int |
| Контакт 47 | PD4 (ICP1) — Port D bit 4 / Timer1 input capture |
| Контакт 48 | PD5 (XCK1) — Port D bit 5 / USART1 clock |
| Контакт 49 | PD6 (T1) — Port D bit 6 / Timer1 clock input |
| Контакт 50 | PD7 (T0) — Port D bit 7 / Timer0 clock input |
| Контакт 51 | PG0 (WR) — Port G bit 0 / external SRAM write strobe |
| Контакт 52 | PG1 (RD) — Port G bit 1 / external SRAM read strobe |
| Контакт 53 | PC0 (A8) — Port C bit 0 / external SRAM address bit 8 |
| Контакт 54 | PC1 (A9) — Port C bit 1 / external SRAM address bit 9 |
| Контакт 55 | PC2 (A10) — Port C bit 2 / external SRAM address bit 10 |
| Контакт 56 | PC3 (A11) — Port C bit 3 / external SRAM address bit 11 |
| Контакт 57 | PC4 (A12) — Port C bit 4 / external SRAM address bit 12 |
| Контакт 58 | PC5 (A13) — Port C bit 5 / external SRAM address bit 13 |
| Контакт 59 | PC6 (A14) — Port C bit 6 / external SRAM address bit 14 |
| Контакт 60 | PC7 (A15) — Port C bit 7 / external SRAM address bit 15 |
| Контакт 61 | VCC — Digital supply voltage |
| Контакт 62 | GND — Digital ground |
| Контакт 63 | PJ0 (RXD3/PCINT9) — Port J bit 0 / USART3 RX / pin change int |
| Контакт 64 | PJ1 (TXD3/PCINT10) — Port J bit 1 / USART3 TX / pin change int |
| Контакт 65 | PJ2 (XCK3/PCINT11) — Port J bit 2 / USART3 clock / pin change int |
| Контакт 66 | PJ3 (PCINT13) — Port J bit 3 / pin change int |
| Контакт 67 | PJ4 (PCINT14) — Port J bit 4 / pin change int |
| Контакт 68 | PJ5 (PCINT15) — Port J bit 5 / pin change int |
| Контакт 69 | PJ6 (PCINT16) — Port J bit 6 / pin change int |
| Контакт 70 | PJ7 (PCINT17) — Port J bit 7 / pin change int |
| Контакт 71 | PA0 (AD0) — Port A bit 0 / external SRAM data 0 |
| Контакт 72 | PA1 (AD1) — Port A bit 1 / external SRAM data 1 |
| Контакт 73 | PA2 (AD2) — Port A bit 2 / external SRAM data 2 |
| Контакт 74 | PA3 (AD3) — Port A bit 3 / external SRAM data 3 |
| Контакт 75 | PA4 (AD4) — Port A bit 4 / external SRAM data 4 |
| Контакт 76 | PA5 (AD5) — Port A bit 5 / external SRAM data 5 |
| Контакт 77 | PA6 (AD6) — Port A bit 6 / external SRAM data 6 |
| Контакт 78 | PA7 (AD7) — Port A bit 7 / external SRAM data 7 |
| Контакт 79 | VCC — Digital supply voltage |
| Контакт 80 | GND — Digital ground |
| Контакт 81 | PF0 (A0) — Port F bit 0 / ADC input 0 |
| Контакт 82 | PF1 (A1) — Port F bit 1 / ADC input 1 |
| Контакт 83 | PF2 (A2) — Port F bit 2 / ADC input 2 |
| Контакт 84 | PF3 (A3) — Port F bit 3 / ADC input 3 |
| Контакт 85 | PF4 (A4/TCK) — Port F bit 4 / ADC4 / JTAG TCK |
| Контакт 86 | PF5 (A5/TMS) — Port F bit 5 / ADC5 / JTAG TMS |
| Контакт 87 | PF6 (A6/TDO) — Port F bit 6 / ADC6 / JTAG TDO |
| Контакт 88 | PF7 (A7/TDI) — Port F bit 7 / ADC7 / JTAG TDI |
| Контакт 89 | PK0 (ADC8/PCINT24) — Port K bit 0 / ADC8 / pin change int |
| Контакт 90 | PK1 (ADC9/PCINT25) — Port K bit 1 / ADC9 / pin change int |
| Контакт 91 | PK2 (ADC10/PCINT26) — Port K bit 2 / ADC10 / pin change int |
| Контакт 92 | PK3 (ADC11/PCINT27) — Port K bit 3 / ADC11 / pin change int |
| Контакт 93 | PK4 (ADC12/PCINT28) — Port K bit 4 / ADC12 / pin change int |
| Контакт 94 | PK5 (ADC13/PCINT29) — Port K bit 5 / ADC13 / pin change int |
| Контакт 95 | PK6 (ADC14/PCINT30) — Port K bit 6 / ADC14 / pin change int |
| Контакт 96 | PK7 (ADC15/PCINT31) — Port K bit 7 / ADC15 / pin change int |
| Контакт 97 | PG2 (ALE) — Port G bit 2 / external SRAM address latch enable |
| Контакт 98 | AVCC — Analog supply voltage |
| Контакт 99 | GND — Analog ground |
| Контакт 100 | AREF — ADC reference voltage |
Типичное применение
ATMEGA2560V-8AU подходит для 6 применениеs: Arduino Mega 2560 Compatible Mainboard, 3D Printer Control Board, Industrial Automation Controller, Robotics Control Board, Multi-Channel Data Logger, Battery-Powered Measurement Instrument.
Arduino Mega 2560 Compatible Mainboard
The ATMEGA2560V-8AU is the original MCU on the Arduino Mega 2560 R3 platform, where its 256 KB Flash and 86 GPIO provide 54 digital I/O plus 16 analog inputs across four USARTs. The 1.8-5.5 V VCC range simplifies USB-bridge regulator design, while the 8 MHz V-grade clock keeps firmware timing loops predictable for shields using timer-based libraries. This part is the de facto standard for hobbyist and prosumer boards requiring large I/O counts without an external memory bus.
Рекомендуется
3D Printer Control Board
The ATMEGA2560V-8AU powers most open-source 3D-printer controllers (RAMPS, MKS GEN, Rambo) where its four USARTs drive multiple serial peripherals and its 16-channel 10-bit ADC reads thermistor inputs. The 256 KB Flash accommodates Marlin firmware with full feature sets including bed-leveling, auto-tune PID and graphic LCD menus, while 8 KB SRAM handles g-code parsing without overflow. The wide 1.8-5.5 V supply allows direct operation from 12 V buck-derived 5 V rails.
Рекомендуется
Industrial Automation Controller
The ATMEGA2560V-8AU is well suited for industrial PLC-style controllers where its 86 GPIO can directly drive relays, optocouplers and indicator LEDs without external I/O expanders. The four USARTs handle RS-232, RS-485 and Modbus links simultaneously, and the 16-channel ADC reads 4-20 mA loop signals through scaling resistors. Industrial -40C to +85C operation is guaranteed across the part's full VCC range, supporting both cabinet and field-mounted deployments.
Рекомендуется
Robotics Control Board
The ATMEGA2560V-8AU drives hobbyist and educational robotics platforms (robot arms, autonomous vehicles, humanoid kits) where its six timer/counters with PWM generate up to 12 PWM channels for servos and motor drivers. The 8 KB SRAM accommodates sensor-fusion buffers and PID loop histories, while the four USARTs connect to IMU, Bluetooth and radio modules concurrently. Field-updatable ISP flash enables on-bench firmware iteration without chip removal.
Рекомендуется
Multi-Channel Data Logger
The ATMEGA2560V-8AU is well suited to standalone data loggers capturing 16 analog inputs simultaneously, where its 16-channel 10-bit ADC runs at up to 15 kSPS at full resolution. The 4 KB EEPROM plus 256 KB Flash stores thousands of timestamped records, and four USARTs handle GPS, cellular modem, serial sensors and PC download ports in parallel. Wide VCC operation enables direct battery logging from solar or Li-ion sources without additional regulators.
Рекомендуется
Battery-Powered Measurement Instrument
The ATMEGA2560V-8AU suits portable field instruments that run directly from two alkaline cells or a Li-ion cell, leveraging its 1.8-5.5 V VCC range to skip boost regulators. The internal 8 MHz RC oscillator eliminates external crystals for low-accuracy applications, while ADC sampling on battery voltage enables fuel-gauge-style state-of-charge monitoring. ISP flash allows field firmware updates from a USB battery charger without disassembly.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для ATMEGA2560V-8AU — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | ATMEGA2560V-8CU | ATMEGA2560-16AU | ATMEGA1280-16AU |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-100 | CBGA-100 (not LQFP footprint-compatible) | TQFP-100 (same footprint) | TQFP-100 (same footprint) |
| Program Flash | 256 KB | 256 KB | 256 KB | 128 KB |
| SRAM | 8 KB | 8 KB | 8 KB | 8 KB |
| EEPROM | 4 KB | 4 KB | 4 KB | 4 KB |
| Operating Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V |
| Maximum Clock | 8 MHz | 8 MHz | 16 MHz | 16 MHz |
| GPIO Count | 86 | 86 | 86 | 86 |
Ключевые отличия
- Widest 1.8 V to 5.5 V supply range in the ATmega2560 series (против ATMEGA2560-16AU)
- Doubles program memory versus the ATmega1280 family (против ATMEGA1280-16AU)
- TQFP-100 footprint shared across same-die V and non-V variants (против ATMEGA2560V-8CU)
Заметки по проектированию
Estimated: at VCC=5V and 8 MHz with all peripherals active the ATMEGA2560V-8AU draws roughly 15-20 mA; with sleep modes (Power-down) current drops below 10 uA. Decouple each VCC/GND pair with a 100 nF ceramic placed within 5 mm of the package pin. AVCC must be tied to VCC through a ferrite bead or small inductor and decoupled with a 100 nF plus a 10 uF bulk capacitor at the AREF pin.
Do not program the lock bits before verifying the bootloader address vector; locking the device without a working bootloader bricks the chip and requires high-voltage parallel programming to recover. The V-suffix grade clock caps at 8 MHz at 1.8 V to 5.5 V; selecting the 16 MHz internal RC above 2.7 V is unsupported and will yield undefined behavior. Always reconfigure JTAG pins as GPIO by clearing the JTD fuse bit before using PF4-PF7 as ADC inputs.
Estimated: at 5 V, 8 MHz and full GPIO toggling the device dissipates roughly 100 mW, well within the TQFP-100 thermal rating of about 50 C/W junction-to-ambient. The die junction temperature remains below 50 C in still air; no heatsink is required. Industrial temperature operation (-40 C to +85 C) is guaranteed across the full 1.8-5.5 V VCC range without derating.
Route the crystal traces (XTAL1, XTAL2) short and symmetric with a ground guard ring to avoid EMI pickup on the low-amplitude oscillator waveform. Keep ADC traces (PORTA, AREF) away from switching digital lines to minimize crosstalk into the 10-bit conversion. Place the ISP 6-pin header near the MCU with all signals in a straight line for in-system firmware updates without removing the chip from the board.
Информация о соответствии
RoHS compliant per Microchip product page; the -8AU suffix indicates lead-free matte-tin plating. Industrial -40C to +85C grade; not AEC-Q100 qualified (automotive customers should contact Microchip for ATmega2560 automotive variants).
