ATMEGA2560V-8AUR - 256KB Flash, 1.8-5.5V AVR MCU 8MHz | Microchip (Tape & Reel)
MPN: ATMEGA2560V-8AUR ✓ فعالATMEGA2560V-8AUR نمای کلی
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-8AUR 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.
جایگزین‌های drop-in برای ATMEGA2560V-8AUR — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
گونه‌ها در این سری
مدل‌های هم‌سری که جایگزین مستقیم هستند برای ATMEGA2560V-8AUR (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در Package, RoHS Status, ADC Channels, Timers/Counters, ADC Resolution.
ATMEGA2560V-8CU
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←ATMEGA2560-16AU
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←ATMEGA2560-16CU
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشدهبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←ATMEGA1280-16AU
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←ATMEGA1281-16AU
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←ATMEGA2560V-8AUR حداکثر مقادیر مجاز و مشخصات الکتریکی
| 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 |
| دمای کاری | -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 |
| بسته‌بندی | 100-pin TQFP |
| نوع نصب | Surface Mount |
| وضعیت RoHS | Compliant |
پیکربندی پین ATMEGA2560V-8AUR
| پین 1 | PG5 (OC0B) — Port G bit 5 / Timer0 compare B output |
| پین 2 | PE0 (RXD0/PCINT8) — Port E bit 0 / USART0 RX / pin change interrupt |
| پین 3 | PE1 (TXD0) — Port E bit 1 / USART0 TX |
| پین 4 | PE2 (AIN0/XCK0) — Port E bit 2 / analog comp in / USART0 clock |
| پین 5 | PE3 (AIN1/OC3A) — Port E bit 3 / analog comp in / Timer3 compare A |
| پین 6 | PE4 (OC3B/INT4) — Port E bit 4 / Timer3 compare B / external interrupt |
| پین 7 | PE5 (OC3C/INT5) — Port E bit 5 / Timer3 compare C / external interrupt |
| پین 8 | PE6 (T3/INT6) — Port E bit 6 / Timer3 clock input / external interrupt |
| پین 9 | PE7 (CLKO/ICP3) — Port E bit 7 / system clock output / Timer3 input capture |
| پین 10 | VCC — Digital supply voltage |
| پین 11 | GND — Digital ground |
| پین 12 | PH0 (RXD2) — Port H bit 0 / USART2 RX |
| پین 13 | PH1 (TXD2) — Port H bit 1 / USART2 TX |
| پین 14 | PH2 (XCK2) — Port H bit 2 / USART2 clock |
| پین 15 | PH3 (OC4A) — Port H bit 3 / Timer4 compare A output |
| پین 16 | PH4 (OC4B) — Port H bit 4 / Timer4 compare B output |
| پین 17 | PH5 (OC4C) — Port H bit 5 / Timer4 compare C output |
| پین 18 | PH6 (OC2B) — Port H bit 6 / Timer2 compare B output |
| پین 19 | PB0 (SS0/PCINT0) — Port B bit 0 / SPI0 slave select / pin change int |
| پین 20 | PB1 (SCK0/PCINT1) — Port B bit 1 / SPI0 clock / pin change int |
| پین 21 | PB2 (MOSI0/PCINT2) — Port B bit 2 / SPI0 MOSI / pin change int |
| پین 22 | PB3 (MISO0/PCINT3) — Port B bit 3 / SPI0 MISO / pin change int |
| پین 23 | PB4 (OC2A/PCINT4) — Port B bit 4 / Timer2 compare A / pin change int |
| پین 24 | PB5 (OC1A/PCINT5) — Port B bit 5 / Timer1 compare A / pin change int |
| پین 25 | PB6 (OC1B/PCINT6) — Port B bit 6 / Timer1 compare B / pin change int |
| پین 26 | PB7 (OC0A/OC1C/PCINT7) — Port B bit 7 / Timer0 compare A / Timer1 compare C |
| پین 27 | PH7 (T4) — Port H bit 7 / Timer4 clock input |
| پین 28 | PG3 (TOSC2) — Port G bit 3 / RTC oscillator output |
| پین 29 | PG4 (TOSC1) — Port G bit 4 / RTC oscillator input |
| پین 30 | RESET — Reset input (active low) |
| پین 31 | VCC — Digital supply voltage |
| پین 32 | GND — Digital ground |
| پین 33 | XTAL2 — Crystal oscillator output |
| پین 34 | XTAL1 — Crystal oscillator input |
| پین 35 | PL0 (ICP4) — Port L bit 0 / Timer4 input capture |
| پین 36 | PL1 (ICP5) — Port L bit 1 / Timer5 input capture |
| پین 37 | PL2 (T5) — Port L bit 2 / Timer5 clock input |
| پین 38 | PL3 (OC5A) — Port L bit 3 / Timer5 compare A output |
| پین 39 | PL4 (OC5B) — Port L bit 4 / Timer5 compare B output |
| پین 40 | PL5 (OC5C) — Port L bit 5 / Timer5 compare C output |
| پین 41 | PL6 — Port L bit 6 / digital I/O |
| پین 42 | PL7 — Port L bit 7 / digital I/O |
| پین 43 | PD0 (SCL/INT0) — Port D bit 0 / I2C clock / external int |
| پین 44 | PD1 (SDA/INT1) — Port D bit 1 / I2C data / external int |
| پین 45 | PD2 (RXD1/INT2) — Port D bit 2 / USART1 RX / external int |
| پین 46 | PD3 (TXD1/INT3) — Port D bit 3 / USART1 TX / external int |
| پین 47 | PD4 (ICP1) — Port D bit 4 / Timer1 input capture |
| پین 48 | PD5 (XCK1) — Port D bit 5 / USART1 clock |
| پین 49 | PD6 (T1) — Port D bit 6 / Timer1 clock input |
| پین 50 | PD7 (T0) — Port D bit 7 / Timer0 clock input |
| پین 51 | PG0 (WR) — Port G bit 0 / external SRAM write strobe |
| پین 52 | PG1 (RD) — Port G bit 1 / external SRAM read strobe |
| پین 53 | PC0 (A8) — Port C bit 0 / external SRAM address bit 8 |
| پین 54 | PC1 (A9) — Port C bit 1 / external SRAM address bit 9 |
| پین 55 | PC2 (A10) — Port C bit 2 / external SRAM address bit 10 |
| پین 56 | PC3 (A11) — Port C bit 3 / external SRAM address bit 11 |
| پین 57 | PC4 (A12) — Port C bit 4 / external SRAM address bit 12 |
| پین 58 | PC5 (A13) — Port C bit 5 / external SRAM address bit 13 |
| پین 59 | PC6 (A14) — Port C bit 6 / external SRAM address bit 14 |
| پین 60 | PC7 (A15) — Port C bit 7 / external SRAM address bit 15 |
| پین 61 | VCC — Digital supply voltage |
| پین 62 | GND — Digital ground |
| پین 63 | PJ0 (RXD3/PCINT9) — Port J bit 0 / USART3 RX / pin change int |
| پین 64 | PJ1 (TXD3/PCINT10) — Port J bit 1 / USART3 TX / pin change int |
| پین 65 | PJ2 (XCK3/PCINT11) — Port J bit 2 / USART3 clock / pin change int |
| پین 66 | PJ3 (PCINT13) — Port J bit 3 / pin change int |
| پین 67 | PJ4 (PCINT14) — Port J bit 4 / pin change int |
| پین 68 | PJ5 (PCINT15) — Port J bit 5 / pin change int |
| پین 69 | PJ6 (PCINT16) — Port J bit 6 / pin change int |
| پین 70 | PJ7 (PCINT17) — Port J bit 7 / pin change int |
| پین 71 | PA0 (AD0) — Port A bit 0 / external SRAM data 0 |
| پین 72 | PA1 (AD1) — Port A bit 1 / external SRAM data 1 |
| پین 73 | PA2 (AD2) — Port A bit 2 / external SRAM data 2 |
| پین 74 | PA3 (AD3) — Port A bit 3 / external SRAM data 3 |
| پین 75 | PA4 (AD4) — Port A bit 4 / external SRAM data 4 |
| پین 76 | PA5 (AD5) — Port A bit 5 / external SRAM data 5 |
| پین 77 | PA6 (AD6) — Port A bit 6 / external SRAM data 6 |
| پین 78 | PA7 (AD7) — Port A bit 7 / external SRAM data 7 |
| پین 79 | VCC — Digital supply voltage |
| پین 80 | GND — Digital ground |
| پین 81 | PF0 (A0) — Port F bit 0 / ADC input 0 |
| پین 82 | PF1 (A1) — Port F bit 1 / ADC input 1 |
| پین 83 | PF2 (A2) — Port F bit 2 / ADC input 2 |
| پین 84 | PF3 (A3) — Port F bit 3 / ADC input 3 |
| پین 85 | PF4 (A4/TCK) — Port F bit 4 / ADC4 / JTAG TCK |
| پین 86 | PF5 (A5/TMS) — Port F bit 5 / ADC5 / JTAG TMS |
| پین 87 | PF6 (A6/TDO) — Port F bit 6 / ADC6 / JTAG TDO |
| پین 88 | PF7 (A7/TDI) — Port F bit 7 / ADC7 / JTAG TDI |
| پین 89 | PK0 (ADC8/PCINT24) — Port K bit 0 / ADC8 / pin change int |
| پین 90 | PK1 (ADC9/PCINT25) — Port K bit 1 / ADC9 / pin change int |
| پین 91 | PK2 (ADC10/PCINT26) — Port K bit 2 / ADC10 / pin change int |
| پین 92 | PK3 (ADC11/PCINT27) — Port K bit 3 / ADC11 / pin change int |
| پین 93 | PK4 (ADC12/PCINT28) — Port K bit 4 / ADC12 / pin change int |
| پین 94 | PK5 (ADC13/PCINT29) — Port K bit 5 / ADC13 / pin change int |
| پین 95 | PK6 (ADC14/PCINT30) — Port K bit 6 / ADC14 / pin change int |
| پین 96 | PK7 (ADC15/PCINT31) — Port K bit 7 / ADC15 / pin change int |
| پین 97 | PG2 (ALE) — Port G bit 2 / external SRAM address latch enable |
| پین 98 | AVCC — Analog supply voltage |
| پین 99 | GND — Analog ground |
| پین 100 | AREF — ADC reference voltage |
کاربردهای معمول
ATMEGA2560V-8AUR مناسب است برای 6 کاربردs: 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-8AUR 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.
پیشنهادی
3D Printer Control Board
The ATMEGA2560V-8AUR 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.
پیشنهادی
Industrial Automation Controller
The ATMEGA2560V-8AUR 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.
پیشنهادی
Robotics Control Board
The ATMEGA2560V-8AUR 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.
پیشنهادی
Multi-Channel Data Logger
The ATMEGA2560V-8AUR 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.
پیشنهادی
Battery-Powered Measurement Instrument
The ATMEGA2560V-8AUR 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.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای ATMEGA2560V-8AUR — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | 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 |
تفاوت‌های کلیدی
- Widest 1.8 V to 5.5 V supply range in the ATmega2560 series (در مقابلATMEGA2560-16AU)
- Doubles program memory versus the ATmega1280 family (در مقابلATMEGA1280-16AU)
- TQFP-100 footprint shared across same-die V and non-V variants (در مقابلATMEGA2560V-8CU)
یادداشت‌های طراحی
Estimated: at VCC=5V and 8 MHz with all peripherals active the ATMEGA2560V-8AUR 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.
اطلاعات انطباق
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).
