{"id":2976,"date":"2026-05-29T00:35:00","date_gmt":"2026-05-29T00:35:00","guid":{"rendered":"https:\/\/materialparts.com\/at91sam7x256c-au\/"},"modified":"2026-05-29T00:35:00","modified_gmt":"2026-05-29T00:35:00","slug":"at91sam7x256c-au","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/at91sam7x256c-au\/","title":{"rendered":"AT91SAM7X256C-AU"},"content":{"rendered":"

\u0646\u0638\u0631\u0629 \u0639\u0627\u0645\u0629 \u0639\u0644\u0649 \u0627\u0644\u0645\u0646\u062a\u062c<\/h2>\n

The AT91SAM7X256C-AU from Microchip Technology is a 32-bit ARM7TDMI-based microcontroller with 256KB Flash, 64KB SRAM, and a rich peripheral set including Ethernet MAC 10\/100, USB 2.0 Full Speed, CAN 2.0A\/B, and multiple serial interfaces. Operating at up to 55MHz, it is housed in a 100-pin LQFP package and targets industrial and embedded networking applications.<\/p>\n

\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u0627\u0644\u0623\u0633\u0627\u0633\u064a\u0627\u062a<\/td>\nARM7TDMI (32-bit)<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u062f \u0627\u0644\u0623\u0642\u0635\u0649 \u0644\u062a\u0631\u062f\u062f \u0627\u0644\u0633\u0627\u0639\u0629<\/td>\n55 MHz<\/td>\n<\/tr>\n
Flash Memory<\/td>\n256 KB<\/td>\n<\/tr>\n
SRAM<\/td>\n64 KB<\/td>\n<\/tr>\n
I\/O Pins<\/td>\n62<\/td>\n<\/tr>\n
USB<\/td>\n2.0 Full Speed Device<\/td>\n<\/tr>\n
\u0625\u064a\u062b\u0631\u0646\u062a<\/td>\nMAC 10\/100<\/td>\n<\/tr>\n
\u0643\u0627\u0646<\/td>\n2.0A and 2.0B<\/td>\n<\/tr>\n
USART\/UART<\/td>\n3 (2 USART + 1 UART)<\/td>\n<\/tr>\n
SPI<\/td>\n2<\/td>\n<\/tr>\n
TWI (I2C)<\/td>\n1<\/td>\n<\/tr>\n
ADC<\/td>\n8-channel, 10-bit<\/td>\n<\/tr>\n
Core Supply<\/td>\n1.8V (internal regulator)<\/td>\n<\/tr>\n
I\/O Supply<\/td>\n1.8V or 3.3V (5V tolerant)<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-40\u00b0C ~ 85\u00b0C<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nLQFP-100<\/td>\n<\/tr>\n
\u062d\u0627\u0644\u0629 \u0627\u0644\u062c\u0632\u0621<\/td>\nIn Production<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • 32-bit ARM7TDMI RISC processor at 55MHz<\/li>\n
  • Integrated Ethernet MAC 10\/100 with DMA<\/li>\n
  • USB 2.0 Full Speed device port<\/li>\n
  • CAN 2.0A and 2.0B compliant controller<\/li>\n
  • Integrated voltage regulator allows single 3.3V supply<\/li>\n
  • 5V-tolerant I\/O pins<\/li>\n
  • 8-channel 10-bit ADC<\/li>\n
  • Three 16-bit timers, RTT, and watchdog<\/li>\n
  • SSC (Synchronous Serial Controller)<\/li>\n
  • Pre-programmed bootloader from USB or UART<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Industrial networking and Ethernet-enabled devices<\/li>\n
    • Building automation and HVAC controllers<\/li>\n
    • CAN bus applications in automotive and industrial<\/li>\n
    • USB-enabled embedded systems<\/li>\n
    • Point-of-sale terminals and gateways<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The AT91SAM7X256C-AU from Microchip Technology is a 32-bit ARM7TDMI-based microcontroller with 256KB Flash, 64KB SRAM, and a rich peripheral set including Ethernet MAC 10\/100, USB 2.0 Full Speed, CAN 2.0A\/B, and multiple serial interfaces. Operating at up to 55MHz, it is housed in a 100-pin LQFP package and targets industrial and embedded networking […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,25],"tags":[],"chip_brand":[134],"class_list":["post-2976","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-microcontrollers-mcu","chip_brand-microchip"],"acf":{"brief_explanation":"ARM7TDMI MCU, 55MHz, 256KB Flash, 64KB SRAM, Ethernet MAC, USB, CAN, LQFP-100","date_code":"","package_case":"LQFP-100","in_stock":3752,"datasheet":"https:\/\/www.microchip.com\/en-us\/product\/at91sam7x256","price":"0.23 @ 90pcs","product_introduction":"The AT91SAM7X256C-AU is a member of Microchip's SAM7X series of 32-bit microcontrollers based on the ARM7TDMI processor. Operating at up to 55MHz, it features 256KB of Flash memory and 64KB of SRAM. The device integrates a comprehensive peripheral set including an Ethernet MAC 10\/100 port with DMA, a USB 2.0 Full Speed device port, a CAN 2.0A\/B compliant controller, two SPIs, two USARTs, one UART, one TWI (I2C), an SSC, three 16-bit timers, a Real-Time Timer (RTT), and an 8-channel 10-bit ADC. The integrated voltage regulator allows single 3.3V supply operation, with the core running at 1.8V internally. The I\/O pins are 5V tolerant, supporting mixed-voltage system designs. A pre-programmed bootloader supports firmware upload via USB or UART interfaces.","working_principle":"The AT91SAM7X256C-AU is built around the ARM7TDMI 32-bit RISC processor core with a 3-stage pipeline executing 32-bit ARM and 16-bit Thumb instruction sets. The Advanced Peripheral Bus (APB) and Advanced High-performance Bus (AHB) connect the processor to peripherals and memory through a DMA controller for efficient data transfer. The Ethernet MAC interfaces to an external PHY via MII\/RMII, handling all MAC layer functions including CRC generation and address filtering. The CAN controller manages message filtering, bit timing, and error handling according to CAN 2.0A\/B specifications. The USB device controller handles all USB protocol layers including packet formatting, CRC, and endpoint management. The ADC uses a successive approximation register (SAR) architecture with 10-bit resolution.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Description<\/th><\/tr>
      1-16<\/td>PA0-PA15<\/td>I\/O<\/td>Port A I\/O (multiplexed with peripheral functions)<\/td><\/tr>
      17-32<\/td>PA16-PA31<\/td>I\/O<\/td>Port A I\/O (Ethernet, USB, SPI)<\/td><\/tr>
      33-48<\/td>PB0-PB15<\/td>I\/O<\/td>Port B I\/O (CAN, USART, ADC)<\/td><\/tr>
      49-64<\/td>PB16-PB31<\/td>I\/O<\/td>Port B I\/O (timer, TWI, SSC)<\/td><\/tr>
      65<\/td>VDDCORE<\/td>PWR<\/td>Core power supply (1.8V from internal regulator)<\/td><\/tr>
      66<\/td>VDDIO<\/td>PWR<\/td>I\/O power supply (1.8V or 3.3V)<\/td><\/tr>
      67<\/td>GND<\/td>GND<\/td>Ground<\/td><\/tr>
      68<\/td>VDDIN<\/td>PWR<\/td>Main supply input (3.3V)<\/td><\/tr>
      69<\/td>TST<\/td>I<\/td>Test mode select<\/td><\/tr>
      70<\/td>NRST<\/td>I<\/td>System reset (active low)<\/td><\/tr>
      71<\/td>TCK<\/td>I<\/td>JTAG test clock<\/td><\/tr>
      72<\/td>TMS<\/td>I<\/td>JTAG test mode select<\/td><\/tr>
      73<\/td>TDI<\/td>I<\/td>JTAG test data input<\/td><\/tr>
      74<\/td>TDO<\/td>O<\/td>JTAG test data output<\/td><\/tr>
      75-100<\/td>Misc<\/td>PWR\/GND<\/td>Power, ground, and analog reference pins<\/td><\/tr><\/table>","application_scenarios":"
      • Industrial Ethernet<\/b>: Embedded web servers and Modbus\/TCP gateways with integrated MAC<\/li>
      • CAN Networks<\/b>: Automotive and industrial bus controllers with CAN 2.0B support<\/li>
      • USB Peripherals<\/b>: Custom USB device classes for data acquisition and control<\/li>
      • Building Automation<\/b>: HVAC controllers combining Ethernet, CAN, and serial interfaces<\/li>
      • POS Systems<\/b>: Point-of-sale terminals requiring Ethernet and USB connectivity<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
        AT91SAM7X256C-AUR<\/td>Microchip<\/td>Tape & Reel packaging variant<\/td><\/tr>
        AT91SAM7X128C-AU<\/td>Microchip<\/td>128KB Flash, 32KB SRAM, lower cost<\/td><\/tr>
        AT91SAM7A3C-AU<\/td>Microchip<\/td>No Ethernet, more CAN channels<\/td><\/tr>
        SAM4E16E<\/td>Microchip<\/td>Cortex-M4, 120MHz, Ethernet+CAN, pin-rich<\/td><\/tr>
        STM32F107VCT6<\/td>STMicroelectronics<\/td>Cortex-M3, Ethernet, CAN, 72MHz<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/2976","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/comments?post=2976"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/2976\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=2976"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=2976"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=2976"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=2976"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}