{"id":12323,"date":"2026-07-28T03:24:06","date_gmt":"2026-07-28T03:24:06","guid":{"rendered":"https:\/\/ic-vendor.com\/r1lp5256esa-5sib1\/"},"modified":"2026-07-28T03:24:06","modified_gmt":"2026-07-28T03:24:06","slug":"r1lp5256esa-5sib1","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/ar\/r1lp5256esa-5sib1\/","title":{"rendered":"R1LP5256ESA-5SI#B1"},"content":{"rendered":"

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

The R1LP5256ESA-5SI#B1 is a 256Kb Advanced Low-Power Static RAM (LPSRAM) from Renesas Electronics, organized as 32K x 8 bits. It operates on a single 4.5V to 5.5V supply with 55 ns access time, making it suitable for legacy 5V systems requiring battery backup. The device features TTL-compatible I\/O, no clocks or refresh required, and ultra-low standby current.<\/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
\u0627\u0644\u0643\u062b\u0627\u0641\u0629<\/td>\n256Kbit (32K x 8)<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u0625\u0645\u062f\u0627\u062f<\/td>\n4.5V to 5.5V<\/td>\n<\/tr>\n
Access Time<\/td>\n55 ns<\/td>\n<\/tr>\n
\u0627\u0644\u0648\u0627\u062c\u0647\u0629<\/td>\nParallel asynchronous<\/td>\n<\/tr>\n
\u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0627\u062d\u062a\u064a\u0627\u0637\u064a<\/td>\nUltra-low (\u00b5A range)<\/td>\n<\/tr>\n
Operating Temp<\/td>\n-40 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629 \u0625\u0644\u0649 +85 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\n28-TSOP I<\/td>\n<\/tr>\n
\u062d\u0627\u0644\u0629 \u0627\u0644\u062c\u0632\u0621<\/td>\nObsolete<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • 256Kbit low-power SRAM with 32K x 8 organization<\/li>\n
  • Single 4.5V to 5.5V power supply<\/li>\n
  • No clocks, no refresh required<\/li>\n
  • All inputs and outputs TTL-compatible<\/li>\n
  • Ultra-low standby current for battery backup<\/li>\n
  • Data retention in battery-backed mode<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Legacy 5V embedded systems<\/li>\n
    • Battery-backed SRAM<\/li>\n
    • \u0627\u0644\u062a\u062d\u0643\u0645 \u0627\u0644\u0635\u0646\u0627\u0639\u064a \u0648\u0627\u0644\u0623\u062a\u0645\u062a\u0629 \u0627\u0644\u0635\u0646\u0627\u0639\u064a\u0629<\/li>\n
    • POS terminals<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The R1LP5256ESA-5SI#B1 is a 256Kb Advanced Low-Power Static RAM (LPSRAM) from Renesas Electronics, organized as 32K x 8 bits. It operates on a single 4.5V to 5.5V supply with 55 ns access time, making it suitable for legacy 5V systems requiring battery backup. The device features TTL-compatible I\/O, no clocks or refresh required, […]<\/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":[3317],"chip_brand":[12],"class_list":["post-12323","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","tag-r1lp5256esa-5sib1","chip_brand-renesas"],"acf":{"brief_explanation":"256Kb 5V LPSRAM, 32Kx8, 55ns, parallel, battery backup, 28-TSOP I","date_code":"","package_case":"28-TSOP I (11.9 x 8.1 mm)","in_stock":3842,"datasheet":"https:\/\/www.renesas.com\/us\/en\/products\/memory-products\/r1lp5256e","price":"","product_introduction":"The R1LP5256ESA-5SI#B1 is a 256Kbit Advanced Low-Power Static RAM (LPSRAM) from Renesas Electronics organized as 32K x 8 bits. Operating on a single 4.5V to 5.5V supply with 55 ns access time, it is designed for memory applications requiring simple interfacing, battery operation, and battery backup. The device requires no clocks or refresh and features TTL-compatible I\/O with ultra-low standby current, making it ideal for 5V legacy systems.","working_principle":"The R1LP5256ESA-5SI#B1 is a fully static asynchronous SRAM. Data is stored in six-transistor CMOS memory cells that retain data without refresh. Address inputs select one of 32,768 byte locations. Read: CE# low, OE# low, WE# high \u2014 data appears on I\/O after access time. Write: CE# low, WE# low \u2014 data on I\/O is written to the addressed location. Standby: CE# high \u2014 the device enters ultra-low power mode with current in the microampere range, supporting battery backup operation.","pin_description":"
      Pin Group<\/th>Interface<\/th>Function<\/th><\/tr>
      A0-A14<\/td>Input<\/td>15-bit address inputs<\/td><\/tr>
      I\/O0-I\/O7<\/td>I\/O<\/td>8-bit data bus<\/td><\/tr>
      CE#<\/td>Input<\/td>Chip enable (active low)<\/td><\/tr>
      OE#<\/td>Input<\/td>Output enable (active low)<\/td><\/tr>
      WE#<\/td>Input<\/td>Write enable (active low)<\/td><\/tr><\/table>","application_scenarios":"
      • Battery-backed configuration storage in industrial systems<\/li>
      • Legacy 5V microcontroller SRAM expansion<\/li>
      • POS and terminal buffer memory<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        ISSI<\/td>IS61LV256AL<\/td>TSOP<\/td>3.3V 256K SRAM alternative<\/td><\/tr>
        Lyontek<\/td>LY62256SL-70LL<\/td>TSOP<\/td>3.3V low-power 256K SRAM<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts\/12323","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/comments?post=12323"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts\/12323\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/media?parent=12323"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/categories?post=12323"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/tags?post=12323"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=12323"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}