{"id":7438,"date":"2026-06-24T06:52:16","date_gmt":"2026-06-24T06:52:16","guid":{"rendered":"https:\/\/materialparts.com\/at27c512r-70ju\/"},"modified":"2026-06-24T06:52:16","modified_gmt":"2026-06-24T06:52:16","slug":"at27c512r-70ju","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/at27c512r-70ju\/","title":{"rendered":"AT27C512R-70JU"},"content":{"rendered":"

Productos<\/h2>\n

The AT27C512R-70JU from Microchip Technology is a 512Kbit (64K x 8) one-time programmable (OTP) EPROM with 70ns access time in a 32-pin PLCC package. Designed for firmware storage and embedded system applications, it provides reliable non-volatile memory with a wide operating voltage range of 4.5V to 5.5V.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n\n\n
Memory Size<\/td>\n512 Kbit (64K x 8)<\/td>\n<\/tr>\n
Organization<\/td>\n64K x 8<\/td>\n<\/tr>\n
Access Time<\/td>\n70 ns<\/td>\n<\/tr>\n
Interface<\/td>\nParallel<\/td>\n<\/tr>\n
Programming Voltage<\/td>\n13V<\/td>\n<\/tr>\n
Tensi\u00f3n de alimentaci\u00f3n<\/td>\n4.5V to 5.5V<\/td>\n<\/tr>\n
Operating Current<\/td>\n20 mA<\/td>\n<\/tr>\n
Paquete<\/td>\nPLCC-32<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n-40\u00b0C to +85\u00b0C<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • One-time programmable (OTP) EPROM for secure code storage<\/li>\n
  • Fast 70ns access time for high-performance systems<\/li>\n
  • Low power consumption with 20mA operating current<\/li>\n
  • Wide operating voltage range of 4.5V to 5.5V<\/li>\n
  • High-reliability CMOS technology<\/li>\n
  • Industry standard 32-pin PLCC package<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • Firmware and boot code storage in embedded systems<\/li>\n
    • Character generator and font storage for displays<\/li>\n
    • Lookup tables for DSP and control algorithms<\/li>\n
    • Configuration data storage for FPGA and CPLD designs<\/li>\n
    • Legacy system replacement and maintenance<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The AT27C512R-70JU from Microchip Technology is a 512Kbit (64K x 8) one-time programmable (OTP) EPROM with 70ns access time in a 32-pin PLCC package. Designed for firmware storage and embedded system applications, it provides reliable non-volatile memory with a wide operating voltage range of 4.5V to 5.5V. Key Specifications Memory Size 512 Kbit […]<\/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":[19,13],"tags":[],"chip_brand":[134],"class_list":["post-7438","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","chip_brand-microchip"],"acf":{"brief_explanation":"512Kbit OTP EPROM, 64Kx8, 70ns access, PLCC-32, parallel interface","date_code":"","package_case":"PLCC-32","in_stock":6847,"datasheet":"https:\/\/www.microchip.com\/en-us\/product\/AT27C512R","price":".97 @ 1+","product_introduction":"The AT27C512R-70JU is a 512Kbit one-time programmable EPROM manufactured by Microchip Technology using high-performance CMOS technology. Organized as 64K words by 8 bits, this device provides reliable non-volatile storage for program code, lookup tables, and configuration data. With a fast 70ns access time, it is suitable for a wide range of microprocessor-based systems requiring quick access to stored data. The OTP programming uses a 13V supply voltage for data writing, while normal operation requires only a 5V supply. The device features low power consumption and data retention exceeding 10 years, making it a dependable choice for embedded and industrial applications.","working_principle":"The AT27C512R-70JU operates as a parallel-access non-volatile memory device. (1) The address input subsystem accepts a 16-bit address (A0-A15) to select one of 65,536 byte locations within the memory array. (2) The memory cell array uses floating-gate EPROM transistors that store charge permanently after OTP programming at 13V, with each cell representing one data bit. (3) The output subsystem drives 8 data lines (O0-O7) with the contents of the addressed location after the specified access time of 70ns. An active-low chip enable (CE) and output enable (OE) control the tri-state output buffers, allowing the device to share a common data bus with other peripherals in a microprocessor system.","pin_description":"
      Pin<\/th>Name<\/th>Function<\/th><\/tr>
      1-8<\/td>A14-A7<\/td>Address Inputs (MSB group)<\/td><\/tr>
      9<\/td>A6<\/td>Address Input<\/td><\/tr>
      10<\/td>A5<\/td>Address Input<\/td><\/tr>
      11-13<\/td>A4-A2<\/td>Address Inputs<\/td><\/tr>
      14<\/td>A1<\/td>Address Input<\/td><\/tr>
      15<\/td>A0<\/td>Address Input (LSB)<\/td><\/tr>
      16-19<\/td>O0-O3<\/td>Data Outputs<\/td><\/tr>
      20<\/td>GND<\/td>Ground<\/td><\/tr>
      21-24<\/td>O4-O7<\/td>Data Outputs<\/td><\/tr>
      25<\/td>CE<\/td>Chip Enable (active low)<\/td><\/tr>
      26-31<\/td>A15,A12-A8<\/td>Address Inputs<\/td><\/tr>
      32<\/td>OE<\/td>Output Enable (active low)<\/td><\/tr><\/table>","application_scenarios":"
      • Firmware storage in legacy embedded microprocessor systems requiring parallel EPROM<\/li>
      • Boot code and BIOS storage in industrial controllers and instrumentation<\/li>
      • Character\/font lookup tables for CRT and LCD display systems<\/li>
      • Calibration data and DSP coefficient storage in measurement equipment<\/li>
      • Configuration bitstream storage for FPGA-based systems<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
        AT27C512R-70JU-T<\/td>Microchip<\/td>Tape and reel packaging<\/td><\/tr>
        AT27C512R-55JU<\/td>Microchip<\/td>55ns faster access time<\/td><\/tr>
        AT27C256R-70JU<\/td>Microchip<\/td>256Kbit, smaller capacity<\/td><\/tr>
        M27C512-70F6<\/td>STMicroelectronics<\/td>Equivalent 512K EPROM, DIP-28<\/td><\/tr>
        AM27C512-70JC<\/td>AMD<\/td>Equivalent 512K EPROM, PLCC-32<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/7438","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/comments?post=7438"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/7438\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=7438"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=7438"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=7438"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=7438"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}