ATMEGA2560V-8AUR - 256KB Flash, 1.8-5.5V AVR MCU 8MHz | Microchip (Tape & Reel)
MPN: ATMEGA2560V-8AUR ✓ פעילATMEGA2560V-8AUR סקירה
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.
חלופות תחליף ישיר עבור ATMEGA2560V-8AUR — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם ATMEGA2560V-8AUR (אותו גורם צורה וטביעת רגל) — שונים ב Package, RoHS Status, ADC Channels, Timers/Counters, ADC Resolution.
ATMEGA2560V-8CU
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←ATMEGA2560-16AU
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←ATMEGA2560-16CU
✅ Drop-In ⚠️ מפרטים לא מאומתיםצור קשר לקבלת מחיר
הצג גיליון נתונים ←ATMEGA1280-16AU
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←ATMEGA1281-16AU
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←ATMEGA2560V-8AUR דירוגים מרביים ומאפיינים חשמליים
| 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 |
| טמפרטורת פעולה | -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 |
| מארז | 100-pin TQFP |
| סוג הרכבה | Surface Mount |
| סטטוס RoHS | Compliant |
תצורת פינים של ATMEGA2560V-8AUR
| פין 1 | PG5 (OC0B) — Port G bit 5 / Timer0 compare B output |
| פין 2 | PE0 (RXD0/PCINT8) — Port E bit 0 / USART0 RX / pin change interrupt |
| פין 3 | PE1 (TXD0) — Port E bit 1 / USART0 TX |
| פין 4 | PE2 (AIN0/XCK0) — Port E bit 2 / analog comp in / USART0 clock |
| פין 5 | PE3 (AIN1/OC3A) — Port E bit 3 / analog comp in / Timer3 compare A |
| פין 6 | PE4 (OC3B/INT4) — Port E bit 4 / Timer3 compare B / external interrupt |
| פין 7 | PE5 (OC3C/INT5) — Port E bit 5 / Timer3 compare C / external interrupt |
| פין 8 | PE6 (T3/INT6) — Port E bit 6 / Timer3 clock input / external interrupt |
| פין 9 | PE7 (CLKO/ICP3) — Port E bit 7 / system clock output / Timer3 input capture |
| פין 10 | VCC — Digital supply voltage |
| פין 11 | GND — Digital ground |
| פין 12 | PH0 (RXD2) — Port H bit 0 / USART2 RX |
| פין 13 | PH1 (TXD2) — Port H bit 1 / USART2 TX |
| פין 14 | PH2 (XCK2) — Port H bit 2 / USART2 clock |
| פין 15 | PH3 (OC4A) — Port H bit 3 / Timer4 compare A output |
| פין 16 | PH4 (OC4B) — Port H bit 4 / Timer4 compare B output |
| פין 17 | PH5 (OC4C) — Port H bit 5 / Timer4 compare C output |
| פין 18 | PH6 (OC2B) — Port H bit 6 / Timer2 compare B output |
| פין 19 | PB0 (SS0/PCINT0) — Port B bit 0 / SPI0 slave select / pin change int |
| פין 20 | PB1 (SCK0/PCINT1) — Port B bit 1 / SPI0 clock / pin change int |
| פין 21 | PB2 (MOSI0/PCINT2) — Port B bit 2 / SPI0 MOSI / pin change int |
| פין 22 | PB3 (MISO0/PCINT3) — Port B bit 3 / SPI0 MISO / pin change int |
| פין 23 | PB4 (OC2A/PCINT4) — Port B bit 4 / Timer2 compare A / pin change int |
| פין 24 | PB5 (OC1A/PCINT5) — Port B bit 5 / Timer1 compare A / pin change int |
| פין 25 | PB6 (OC1B/PCINT6) — Port B bit 6 / Timer1 compare B / pin change int |
| פין 26 | PB7 (OC0A/OC1C/PCINT7) — Port B bit 7 / Timer0 compare A / Timer1 compare C |
| פין 27 | PH7 (T4) — Port H bit 7 / Timer4 clock input |
| פין 28 | PG3 (TOSC2) — Port G bit 3 / RTC oscillator output |
| פין 29 | PG4 (TOSC1) — Port G bit 4 / RTC oscillator input |
| פין 30 | RESET — Reset input (active low) |
| פין 31 | VCC — Digital supply voltage |
| פין 32 | GND — Digital ground |
| פין 33 | XTAL2 — Crystal oscillator output |
| פין 34 | XTAL1 — Crystal oscillator input |
| פין 35 | PL0 (ICP4) — Port L bit 0 / Timer4 input capture |
| פין 36 | PL1 (ICP5) — Port L bit 1 / Timer5 input capture |
| פין 37 | PL2 (T5) — Port L bit 2 / Timer5 clock input |
| פין 38 | PL3 (OC5A) — Port L bit 3 / Timer5 compare A output |
| פין 39 | PL4 (OC5B) — Port L bit 4 / Timer5 compare B output |
| פין 40 | PL5 (OC5C) — Port L bit 5 / Timer5 compare C output |
| פין 41 | PL6 — Port L bit 6 / digital I/O |
| פין 42 | PL7 — Port L bit 7 / digital I/O |
| פין 43 | PD0 (SCL/INT0) — Port D bit 0 / I2C clock / external int |
| פין 44 | PD1 (SDA/INT1) — Port D bit 1 / I2C data / external int |
| פין 45 | PD2 (RXD1/INT2) — Port D bit 2 / USART1 RX / external int |
| פין 46 | PD3 (TXD1/INT3) — Port D bit 3 / USART1 TX / external int |
| פין 47 | PD4 (ICP1) — Port D bit 4 / Timer1 input capture |
| פין 48 | PD5 (XCK1) — Port D bit 5 / USART1 clock |
| פין 49 | PD6 (T1) — Port D bit 6 / Timer1 clock input |
| פין 50 | PD7 (T0) — Port D bit 7 / Timer0 clock input |
| פין 51 | PG0 (WR) — Port G bit 0 / external SRAM write strobe |
| פין 52 | PG1 (RD) — Port G bit 1 / external SRAM read strobe |
| פין 53 | PC0 (A8) — Port C bit 0 / external SRAM address bit 8 |
| פין 54 | PC1 (A9) — Port C bit 1 / external SRAM address bit 9 |
| פין 55 | PC2 (A10) — Port C bit 2 / external SRAM address bit 10 |
| פין 56 | PC3 (A11) — Port C bit 3 / external SRAM address bit 11 |
| פין 57 | PC4 (A12) — Port C bit 4 / external SRAM address bit 12 |
| פין 58 | PC5 (A13) — Port C bit 5 / external SRAM address bit 13 |
| פין 59 | PC6 (A14) — Port C bit 6 / external SRAM address bit 14 |
| פין 60 | PC7 (A15) — Port C bit 7 / external SRAM address bit 15 |
| פין 61 | VCC — Digital supply voltage |
| פין 62 | GND — Digital ground |
| פין 63 | PJ0 (RXD3/PCINT9) — Port J bit 0 / USART3 RX / pin change int |
| פין 64 | PJ1 (TXD3/PCINT10) — Port J bit 1 / USART3 TX / pin change int |
| פין 65 | PJ2 (XCK3/PCINT11) — Port J bit 2 / USART3 clock / pin change int |
| פין 66 | PJ3 (PCINT13) — Port J bit 3 / pin change int |
| פין 67 | PJ4 (PCINT14) — Port J bit 4 / pin change int |
| פין 68 | PJ5 (PCINT15) — Port J bit 5 / pin change int |
| פין 69 | PJ6 (PCINT16) — Port J bit 6 / pin change int |
| פין 70 | PJ7 (PCINT17) — Port J bit 7 / pin change int |
| פין 71 | PA0 (AD0) — Port A bit 0 / external SRAM data 0 |
| פין 72 | PA1 (AD1) — Port A bit 1 / external SRAM data 1 |
| פין 73 | PA2 (AD2) — Port A bit 2 / external SRAM data 2 |
| פין 74 | PA3 (AD3) — Port A bit 3 / external SRAM data 3 |
| פין 75 | PA4 (AD4) — Port A bit 4 / external SRAM data 4 |
| פין 76 | PA5 (AD5) — Port A bit 5 / external SRAM data 5 |
| פין 77 | PA6 (AD6) — Port A bit 6 / external SRAM data 6 |
| פין 78 | PA7 (AD7) — Port A bit 7 / external SRAM data 7 |
| פין 79 | VCC — Digital supply voltage |
| פין 80 | GND — Digital ground |
| פין 81 | PF0 (A0) — Port F bit 0 / ADC input 0 |
| פין 82 | PF1 (A1) — Port F bit 1 / ADC input 1 |
| פין 83 | PF2 (A2) — Port F bit 2 / ADC input 2 |
| פין 84 | PF3 (A3) — Port F bit 3 / ADC input 3 |
| פין 85 | PF4 (A4/TCK) — Port F bit 4 / ADC4 / JTAG TCK |
| פין 86 | PF5 (A5/TMS) — Port F bit 5 / ADC5 / JTAG TMS |
| פין 87 | PF6 (A6/TDO) — Port F bit 6 / ADC6 / JTAG TDO |
| פין 88 | PF7 (A7/TDI) — Port F bit 7 / ADC7 / JTAG TDI |
| פין 89 | PK0 (ADC8/PCINT24) — Port K bit 0 / ADC8 / pin change int |
| פין 90 | PK1 (ADC9/PCINT25) — Port K bit 1 / ADC9 / pin change int |
| פין 91 | PK2 (ADC10/PCINT26) — Port K bit 2 / ADC10 / pin change int |
| פין 92 | PK3 (ADC11/PCINT27) — Port K bit 3 / ADC11 / pin change int |
| פין 93 | PK4 (ADC12/PCINT28) — Port K bit 4 / ADC12 / pin change int |
| פין 94 | PK5 (ADC13/PCINT29) — Port K bit 5 / ADC13 / pin change int |
| פין 95 | PK6 (ADC14/PCINT30) — Port K bit 6 / ADC14 / pin change int |
| פין 96 | PK7 (ADC15/PCINT31) — Port K bit 7 / ADC15 / pin change int |
| פין 97 | PG2 (ALE) — Port G bit 2 / external SRAM address latch enable |
| פין 98 | AVCC — Analog supply voltage |
| פין 99 | GND — Analog ground |
| פין 100 | AREF — ADC reference voltage |
יישומים טיפוסיים
ATMEGA2560V-8AUR מתאים עבור 6 יישוםs: 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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור ATMEGA2560V-8AUR — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | 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 |
מבדילים עיקריים
- Widest 1.8 V to 5.5 V supply range in the ATmega2560 series (לעומתATMEGA2560-16AU)
- Doubles program memory versus the ATmega1280 family (לעומתATMEGA1280-16AU)
- TQFP-100 footprint shared across same-die V and non-V variants (לעומתATMEGA2560V-8CU)
הערות תכנון
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.
מידע על תאימות
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).
