{"id":6823,"date":"2026-06-21T12:40:54","date_gmt":"2026-06-21T12:40:54","guid":{"rendered":"https:\/\/materialparts.com\/atmega64a-mu\/"},"modified":"2026-06-21T12:40:54","modified_gmt":"2026-06-21T12:40:54","slug":"atmega64a-mu","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/atmega64a-mu\/","title":{"rendered":"ATMEGA64A-MU"},"content":{"rendered":"

\u4ea7\u54c1\u6982\u89c8<\/h2>\n

The ATMEGA64A-MU from Microchip Technology (Atmel) is an 8-bit AVR microcontroller running at 16 MHz with 64 KB Flash, 4 KB SRAM, 2 KB EEPROM, and rich peripherals in a QFN-64 package.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u7c7b\u578b<\/td>\n8-bit AVR Microcontroller<\/td>\n<\/tr>\n
CPU<\/td>\nAVR 8-bit RISC, 16 MHz<\/td>\n<\/tr>\n
\u95ea\u5149\u706f<\/td>\n64 KB<\/td>\n<\/tr>\n
SRAM<\/td>\n4 KB<\/td>\n<\/tr>\n
EEPROM<\/td>\n2 KB<\/td>\n<\/tr>\n
I\/O Pins<\/td>\n53<\/td>\n<\/tr>\n
ADC<\/td>\n8-channel, 10-bit<\/td>\n<\/tr>\n
USART<\/td>\n2<\/td>\n<\/tr>\n
SPI<\/td>\n1<\/td>\n<\/tr>\n
I2C (TWI)<\/td>\n1<\/td>\n<\/tr>\n
\u8ba1\u65f6\u5668<\/td>\n2x 8-bit + 2x 16-bit<\/td>\n<\/tr>\n
PWM<\/td>\n6 channels<\/td>\n<\/tr>\n
\u7535\u6e90\u7535\u538b<\/td>\n2.7 V to 5.5 V<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nQFN-64 (9 x 9 mm)<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40C to +85C<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • 16 MIPS throughput at 16 MHz<\/li>\n
  • 64 KB ISP Flash with 10K write cycles<\/li>\n
  • 2 KB EEPROM with 100K write cycles<\/li>\n
  • 4 KB internal SRAM<\/li>\n
  • Dual USART with hardware SPI and I2C<\/li>\n
  • 10-bit ADC with 8 channels<\/li>\n
  • JTAG and debugWIRE interface<\/li>\n
  • Real-time counter with separate oscillator<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Industrial control systems<\/li>\n
    • Automotive body electronics<\/li>\n
    • Building automation<\/li>\n
    • Motor speed controllers<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The ATMEGA64A-MU from Microchip Technology (Atmel) is an 8-bit AVR microcontroller running at 16 MHz with 64 KB Flash, 4 KB SRAM, 2 KB EEPROM, and rich peripherals in a QFN-64 package. Key Specifications Type 8-bit AVR Microcontroller CPU AVR 8-bit RISC, 16 MHz Flash 64 KB SRAM 4 KB EEPROM 2 KB […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,25],"tags":[],"chip_brand":[134],"class_list":["post-6823","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-microcontrollers-mcu","chip_brand-microchip"],"acf":{"brief_explanation":"AVR 8-bit 16MHz MCU, 64KB Flash, 4KB SRAM, 2KB EEPROM, QFN-64","date_code":"","package_case":"QFN-64 (9 x 9 x 0.9 mm, 0.5mm pitch)","in_stock":2345,"datasheet":"https:\/\/ww1.microchip.com\/downloads\/en\/DeviceDoc\/Atmel-8164-8-bit-AVR-Microcontroller-ATmega64A_Datasheet.pdf","price":"$5.20 @ 1ku","product_introduction":"The ATMEGA64A-MU from Microchip (formerly Atmel) is a high-performance 8-bit AVR RISC microcontroller with 64 KB ISP Flash, 4 KB SRAM, and 2 KB EEPROM. The AVR core achieves 16 MIPS throughput at 16 MHz with most instructions executing in a single clock cycle. The device features two USARTs, one SPI, one TWI (I2C), an 8-channel 10-bit ADC, six PWM channels, and four timers (two 8-bit and two 16-bit). The 53 I\/O pins provide extensive connectivity for multi-function designs. The QFN-64 package with 0.5mm pitch offers a compact footprint for space-constrained applications. The JTAG interface supports on-chip debugging and boundary scan, while debugWIRE provides a single-pin debug alternative.","working_principle":"The ATMEGA64A-MU uses the AVR enhanced RISC architecture with 130 instructions, most executing in a single clock cycle. The 32 general-purpose registers are directly connected to the ALU, allowing two registers to be accessed in one instruction and the result written back in the same cycle. The Flash is organized as 32K x 16-bit words (most instructions are 16-bit). The 4 KB SRAM supports direct, indirect (with displacement), and indirect with pre-decrement\/post-increment addressing modes. The two USARTs support synchronous and asynchronous operation with frame error and parity error detection. The 10-bit ADC uses a successive approximation architecture with 65-260 us conversion time. The Timer\/Counter modules support PWM generation, input capture, and output compare modes. The EEPROM is byte-addressable with a dedicated write controller that handles erase-then-write cycles automatically.","pin_description":"
      Pin Group<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      Multiple<\/td>PA0-PA7<\/td>I\/O<\/td>GPIO Port A (ADC\/digital)<\/td><\/tr>
      Multiple<\/td>PB0-PB7<\/td>I\/O<\/td>GPIO Port B (SPI\/Timers)<\/td><\/tr>
      Multiple<\/td>PC0-PC7<\/td>I\/O<\/td>GPIO Port C (JTAG\/TWI)<\/td><\/tr>
      Multiple<\/td>PD0-PD7<\/td>I\/O<\/td>GPIO Port D (USART0)<\/td><\/tr>
      Multiple<\/td>PE0-PE7<\/td>I\/O<\/td>GPIO Port E (USART1\/INT)<\/td><\/tr>
      Multiple<\/td>PF0-PF7<\/td>I\/O<\/td>GPIO Port F (ADC)<\/td><\/tr>
      Dedicated<\/td>RESET<\/td>Input<\/td>Active LOW reset<\/td><\/tr>
      Dedicated<\/td>XTAL1\/2<\/td>I\/O<\/td>Oscillator pins<\/td><\/tr>
      Dedicated<\/td>AVCC<\/td>Power<\/td>ADC power supply<\/td><\/tr>
      Dedicated<\/td>AREF<\/td>Input<\/td>ADC reference voltage<\/td><\/tr><\/table>","application_scenarios":"
      • Industrial Modbus RTU slave with dual USART (RS-232 + RS-485)<\/li>
      • Automotive door controller with CAN transceiver via SPI<\/li>
      • Building HVAC zone controller with 8-channel ADC for sensors<\/li>
      • Brushless DC motor commutation controller with 6-channel PWM<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        Microchip<\/td>ATMEGA64A-AU<\/td>TQFP-64<\/td>Same device, TQFP package<\/td><\/tr>
        Microchip<\/td>ATMEGA128A-MU<\/td>QFN-64<\/td>128KB Flash, pin-compatible upgrade<\/td><\/tr>
        Microchip<\/td>ATMEGA1281-MU<\/td>QFN-64<\/td>128KB, more SRAM (8KB)<\/td><\/tr>
        ST<\/td>STM32F103C8T6<\/td>LQFP-48<\/td>32-bit ARM, 72MHz, upgrade path<\/td><\/tr>
        Microchip<\/td>ATMEGA324PA-MU<\/td>QFN-44<\/td>32KB Flash, fewer pins, picoPower<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/6823","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/comments?post=6823"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/6823\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=6823"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=6823"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=6823"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=6823"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}