ATMEGA64-16MU - 8-Bit AVR MCU 16MHz 64KB Flash | Microchip
Teilenummer: ATMEGA64-16MU ✗ Abgekündigt| Menge | Stückpreis | Gesamt |
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| 1 | $0 | $0,00 |
| 10 | $0 | $0,00 |
| 100 | $0 | $0,00 |
| 500 | $0 | $0,00 |
| 1.000 | $0 | $0,00 |
ATMEGA64-16MU Übersicht
An 8-bit microcontroller (MCU) is a single-chip processor that integrates a CPU core, program and data memory, and peripheral functions such as timers, serial interfaces, and ADCs on one silicon die. MCUs sit at the heart of embedded systems - below microprocessors in processing power but above discrete logic in integration - forming the lowest tier of the compute hierarchy: microcontroller -> processor -> system-on-chip. The ATmega64 belongs to the AVR family, famous for executing most instructions in a single clock cycle.
Key features include the AVR RISC architecture with 130 powerful instructions (most single-cycle) and 32 x 8-bit general-purpose working registers, achieving throughput approaching 1 MIPS per MHz. At the 16MHz maximum frequency, the device delivers up to 16 MIPS. Non-volatile memory is split into 64KB self-programmable FLASH endurance-rated for repeated reprogramming, 2KB EEPROM, and 4KB internal SRAM, enabling complex firmware with parameter storage in a single chip.
The ATmega64 is a low-power CMOS design: fully static operation allows the clock to be stopped and restarted without losing register state, and power-down sleep modes reduce standby consumption to microamp levels. Peripherals typically include USARTs, SPI, TWI (I2C-compatible), a 10-bit ADC, JTAG for on-chip debugging and boundary scan, and multiple 8-bit and 16-bit timers with PWM outputs - all feeding the 53 programmable I/O lines.
Typical applications include industrial automation control boards, motor and LED lighting control, metering equipment, sensor data loggers, and legacy embedded platforms built around the AVR instruction set. The 16MHz grade (4.5V to 5.5V operating voltage) suits 5V industrial environments where noise margin matters.
Design consideration: this device is a mature product superseded by the ATmega64A; Microchip does not recommend it for new designs, so plan migration or stock-up accordingly.
This page synthesizes distributor sourcing information, drop-in alternative options, lifecycle guidance, and practical design notes not found in the manufacturer datasheet alone.
Drop-in-Alternativen für ATMEGA64-16MU – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit ATMEGA64-16MU (gleiche Bauform und Footprint) – abweichend in Package, Instructions, Timer/Counters, EEPROM, SRAM.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
ATMEGA64A-MU
✅ Drop-In✓ Auf Lager
$4.24 / Stück
Datenblatt ansehen →ATMEGA64-16MI
✅ Drop-In✓ Auf Lager
$4.48 / Stück
Datenblatt ansehen →ATMEGA128A-MUR
✅ Drop-In✓ Auf Lager
$5.2 / Stück
Datenblatt ansehen →AT90CAN64-16MU
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
ATMEGA2561-16MU
✅ Drop-In✓ Auf Lager
$11.83 / Stück
Datenblatt ansehen →ATMEGA64-16MU Grenzwerte & elektrische Eigenschaften
| Core Processor | AVR (8-bit RISC) |
| Core Size | 8-Bit |
| Maximale Taktfrequenz | 16 MHz |
| Program Memory Type | FLASH |
| Program Memory Size | 64KB (32K x 16) |
| RAM Size | 4KB |
| EEPROM Size | 2KB |
| Number of Instructions | 130 (most single-cycle) |
| Performance | Approaching 1 MIPS per MHz (up to 16 MIPS at 16 MHz) |
| Operating Voltage | 4.5 V to 5.5 V (16 MHz speed grade) |
| Gehäuse | 64-QFN (9x9 mm) with exposed pad |
| Montageart | Surface Mount |
| Architecture | AVR enhanced RISC, fully static operation |
| Programming Interface | In-System Programmable (ISP) |
| JTAG | On-chip JTAG for debug and boundary scan |
| Product Status | Mature; not recommended for new designs - replaced by ATmega64A |
ATMEGA64-16MU 64-qfn (9x9 mm) with exposed pad Pinbelegungsleitfaden
Pinbelegung für ATMEGA64-16MU (64-qfn (9x9 mm) with exposed pad-Gehäuse). Dieser digitale IC umfasst GPIO, Kommunikationsschnittstellen (UART, SPI, I2C) und Versorgungspins. Alternative Pin-Funktionen und Konfigurationsoptionen entnehmen Sie dem Herstellerdatenblatt. Unverzichtbar für Embedded-System-Design und PCB-Layout.
Keine detaillierten Pinbelegungsdaten verfügbar für ATMEGA64-16MU.
Siehe die Datenblatt für die vollständige Pin-Konfiguration.
Typische Anwendungen
ATMEGA64-16MU ist geeignet für 6 Anwendungs: Industrial Automation Control Boards, Motor Control and PWM Power Systems, Metering and Sensor Data Logging, Embedded Networking and Protocol Bridges, Legacy Embedded Platform Maintenance, Hobbyist and Arduino-Based Prototyping.
Industrial Automation Control Boards
The ATMEGA64-16MU fits industrial automation controllers where a 5V logic domain, deterministic single-cycle instruction execution, and in-system firmware updates are required. Its 64KB self-programmable FLASH allows field firmware upgrades via a resident bootloader, while the 2KB EEPROM retains calibration constants across power cycles. The on-chip JTAG port supports in-circuit debugging on assembled boards, shortening commissioning cycles on production lines. At 16MHz the core delivers up to 16 MIPS, adequate for PLC I/O scanning loops, relay sequencing, and Modbus-style serial protocols over its USARTs. Because the device is mature and 5V-native, it provides wide noise margins in electrically harsh cabinets, though new designs should qualify ATMEGA64A-MU for long-term supply. Recommended companion parts include RS-485 transceivers and watchdog supervisors on the same board.
Empfohlen
Motor Control and PWM Power Systems
Motor control benefits from the ATmega64's multiple 8-bit and 16-bit timers with PWM generation, driving brushed DC, stepper, and BLDC power stages through gate drivers. The 16MHz clock yields 8-bit PWM resolution at roughly 62.5kHz base frequency, above audible range, while 16-bit timers support precision servo-style duty cycles. The 53 programmable I/O lines accommodate quadrature encoder inputs, limit switches, and gate enable signals on one die. The 4KB SRAM supports control-loop state and ramp tables without external memory. Because the AVR executes most instructions in a single cycle, current-loop and speed-loop interrupt latency stays predictable, which matters for torque ripple. Designers should place snubbers on the power stage to protect I/O, and use the EEPROM for fault counters and commutation calibration data.
Empfohlen
Metering and Sensor Data Logging
Utility meters and environmental data loggers leverage the ATMEGA64-16MU's 10-bit ADC, 2KB EEPROM, and 4KB SRAM. Sensor samples are buffered in SRAM, aggregated, and written with wear-aware pacing into the EEPROM, which retains data without power for decades. The device's fully static CMOS core allows clock throttling and sleep modes between sampling intervals, stretching battery life in metering installations. Its 5V-native 16MHz grade suits mains-powered meters with robust noise margin, while the USARTs stream readings to Modbus or proprietary serial back-ends. Firmware can implement CRC-checked logging and self-programmable updates through the 64KB FLASH bootloader. JTAG debugging on assembled meter boards accelerates certification testing. New metering designs should evaluate ATMEGA64A-MU to secure lifecycle continuity.
Empfohlen
Embedded Networking and Protocol Bridges
The ATMEGA64-16MU serves as a protocol bridge controller where multiple serial links converge: its USARTs handle RS-232/RS-485 traffic, hardware SPI connects Ethernet MAC/PHY companion ICs or CAN controllers, and TWI (I2C) manages configuration devices. The 16MHz clock sustains roughly 16 MIPS, enough to service full-speed UART traffic while running checksummed framing in software. The 4KB SRAM provides dual buffering between ports, and the 64KB FLASH stores multiple protocol stacks with room for a field-update bootloader. Industrial gateways in 5V environments appreciate the part's wide electrical margins. For native CAN connectivity, the pin-compatible AT90CAN64-16MU swaps in a hardware CAN controller on the same 64-QFN footprint, minimizing board redesign when the network layer requires CAN.
Empfohlen
Legacy Embedded Platform Maintenance
A large installed base of industrial, medical, and consumer equipment runs on the ATmega64, and the ATMEGA64-16MU is central to its sustaining engineering. Because the die is mature with frozen errata, existing firmware behaves predictably, and replacement units can be flashed from archived images without requalification. The part's In-System Programmable FLASH permits repairing deployed units in the field via ISP headers, and the 2KB EEPROM preserves user calibration during service. Procurement teams should maintain safety stock given the not-recommended-for-new-designs status, or qualify ATMEGA64A-MU, which runs legacy firmware on refreshed silicon in the identical 64-QFN footprint. XAIPART supports maintenance sourcing with datasheet-backed traceability to avoid counterfeit AVR parts that circulate in the legacy market.
Empfohlen
Hobbyist and Arduino-Based Prototyping
The ATmega64 is supported by the MegaCore Arduino hardware package, letting hobbyists and startups prototype on a familiar Arduino-style API with far more FLASH and SRAM than an ATmega328P: 64KB program memory and 4KB SRAM accommodate large sketches, multiple libraries, and logging buffers. The 16MHz grade matches classic Arduino Uno timing, so delay and timing code ports directly. The 64-QFN (9x9) package requires a four-layer or solid-ground two-layer board with thermal via stitching on the exposed pad, and breakout adapters ease hand assembly. JTAG enables true on-chip debugging with inexpensive tools, a step up from Uno-class serial debugging. For products leaving prototype stage, the same MegaCore firmware runs on ATMEGA64A-MU for supply longevity.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für ATMEGA64-16MU – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | ATMEGA64A-MU | ATMEGA64-16MI | ATMEGA128A-MU | AT90CAN64-16MU | ATMEGA2561-16MU |
|---|---|---|---|---|---|---|
| Package | 64-QFN (9x9) | 64-QFN (9x9) - same | 64-QFN (9x9) - same | 64-QFN (9x9) - same | 64-QFN (9x9) - same | 64-QFN (9x9) - same |
| Brand | Microchip Technology (Atmel legacy) | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Architecture | AVR 8-bit RISC, 130 instructions | AVR 8-bit RISC - same core | AVR 8-bit RISC - same core | AVR 8-bit RISC - same core | AVR 8-bit RISC (AT90 with CAN) | AVR 8-bit RISC, extended instructions |
| Maximum Clock Frequency | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 16 MHz |
| Program FLASH | 64KB (32K x 16) | 64KB | 64KB | 128KB (+100%) | 64KB | 256KB (+300%) |
| Distinctive Feature | 5V-native 16MHz grade, JTAG debug | Refreshed silicon, supply longevity | Alternate QFN packaging option | Doubled FLASH headroom | Hardware CAN controller | Largest FLASH on 64-pin footprint |
Wichtigste Unterscheidungsmerkmale
- Native 16MHz full-speed operation (vs. ATmega64L variants)
- On-chip JTAG debugging (vs. ATMEGA328P-MU)
- Supply risk vs successor (vs. ATMEGA64A-MU)
Designhinweise
The ATMEGA64-16MU is a 16MHz speed-grade device, which per the ATmega64 family datasheet requires an operating voltage of 4.5V to 5.5V; do not run it from 3.3V rails or below about 5MHz the part will not meet datasheet performance. Decouple VCC and AVCC with 100nF ceramic capacitors placed within 2mm of each supply pin, and add bulk 10uF at the board level. If analog accuracy matters, filter AVCC through an LC (ferrite + 100nF/10uF) and connect AGND to the solid ground plane at one low-impedance point.
The 64-pad QFN (9x9 mm) has an exposed thermal die pad that must be soldered to a ground-copper area on the PCB for both mechanical reliability and grounding. Use an array of thermal vias (roughly 5x5 pattern, 0.3mm drill) stitched to the internal ground plane. The QFN perimeter lands should be non-solder-mask-defined with about 60-70% paste coverage to avoid floating the package on excessive paste. This is a 0.5mm-pitch peripheral footprint - specify lead-free reflow profiles and check stencil aperture design before first build.
Lifecycle is the biggest trap: ATMEGA64-16MU is flagged 'Newer Device Available ATMEGA64A - Mature product; not recommended for new designs'. For new boards, qualify ATMEGA64A-MU, which keeps the same 64-QFN footprint and firmware compatibility. Also beware counterfeit stock on the secondary market for mature AVR parts - buy only from franchised distributors or verified sources. Finally, when migrating to ATmega64A, review the newer datasheet's electrical characteristics and errata; instruction-level behavior is the same, but a few AC/DC characteristic values were refreshed on the newer process.
Compliance-Informationen
Compliance status not stated in the retrieved web data; verify on the Microchip product page or distributor compliance documentation. Not an AEC-Q100 automotive-qualified part number in this suffix.
