{"id":12351,"date":"2026-07-28T03:33:57","date_gmt":"2026-07-28T03:33:57","guid":{"rendered":"https:\/\/ic-vendor.com\/aps1604m-3sqr-sn\/"},"modified":"2026-07-28T03:33:57","modified_gmt":"2026-07-28T03:33:57","slug":"aps1604m-3sqr-sn","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/ar\/aps1604m-3sqr-sn\/","title":{"rendered":"APS1604M-3SQR-SN"},"content":{"rendered":"

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

The APS1604M-3SQR-SN is a 64Mbit (8M x 8-bit) Serial Pseudo-SRAM (PSRAM) from Alliance Memory (APMemory) operating at 3.0V to 3.6V with SPI\/QPI interface. It is a drop-in replacement for the Lyontek LY68L6400 and ESP-PSRAM64H, featuring clock rates up to 104 MHz, self-managed refresh, and SOP-8 package. Available from Mouser with stable supply.<\/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
\u0627\u0644\u0643\u062b\u0627\u0641\u0629<\/td>\n64Mb (8M x 8 bits)<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u0625\u0645\u062f\u0627\u062f<\/td>\n3.0V to 3.6V<\/td>\n<\/tr>\n
\u0627\u0644\u0648\u0627\u062c\u0647\u0629<\/td>\nSPI \/ QPI (SDR mode)<\/td>\n<\/tr>\n
Max Clock Rate<\/td>\n104 MHz<\/td>\n<\/tr>\n
Page Size<\/td>\n1024 bytes<\/td>\n<\/tr>\n
Burst Mode<\/td>\nLinear or 32-byte wrapped<\/td>\n<\/tr>\n
Refresh<\/td>\nSelf-managed<\/td>\n<\/tr>\n
\u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0627\u062d\u062a\u064a\u0627\u0637\u064a<\/td>\n~8 \u00b5A typical @ 25\u00b0C<\/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>\nSOP-8 (150mil)<\/td>\n<\/tr>\n
\u062d\u0627\u0644\u0629 \u0627\u0644\u062c\u0632\u0621<\/td>\n\u0646\u0634\u0637<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • 64Mb SPI\/QPI PSRAM \u2014 drop-in replacement for LY68L6400<\/li>\n
  • Self-managed refresh<\/li>\n
  • 104 MHz max clock rate<\/li>\n
  • Linear or 32-byte wrapped burst<\/li>\n
  • Software reset<\/li>\n
  • Available from Mouser with stable supply<\/li>\n
  • Pin-compatible with ESP-PSRAM64H<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • ESP32 \/ RP2350 external PSRAM<\/li>\n
    • Drop-in replacement for unavailable LY68L6400SLIT<\/li>\n
    • IoT and wearable devices<\/li>\n
    • MCU external RAM expansion<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The APS1604M-3SQR-SN is a 64Mbit (8M x 8-bit) Serial Pseudo-SRAM (PSRAM) from Alliance Memory (APMemory) operating at 3.0V to 3.6V with SPI\/QPI interface. It is a drop-in replacement for the Lyontek LY68L6400 and ESP-PSRAM64H, featuring clock rates up to 104 MHz, self-managed refresh, and SOP-8 package. Available from Mouser with stable supply. Key […]<\/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":[3347],"chip_brand":[3330],"class_list":["post-12351","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","tag-aps1604m-3sqr-sn","chip_brand-alliance"],"acf":{"brief_explanation":"64Mb SPI\/QPI PSRAM, 8Mx8, 3.0~3.6V, 104MHz, self-refresh, SOP-8, drop-in for LY68L6400","date_code":"","package_case":"SOP-8 (150mil)","in_stock":4321,"datasheet":"https:\/\/www.alliancememory.com\/wp-content\/uploads\/pdf\/PSRAM\/APS1604M-3SQR-SN.pdf","price":"$1.20 @ 1pc","product_introduction":"The APS1604M-3SQR-SN is a 64Mbit (8M x 8-bit) Serial Pseudo-SRAM from Alliance Memory (APMemory) operating at 3.0V to 3.6V with SPI\/QPI interfaces and clock rates up to 104 MHz. It is a drop-in replacement for the Lyontek LY68L6400SLIT and ESP-PSRAM64H, providing stable supply availability from Mouser. Self-managed refresh, SOP-8 package, and pin compatibility make it a seamless alternative when the LY68L6400 is unavailable.","working_principle":"Serial pseudo-SRAM with internal DRAM array and self-refresh. SPI mode: serial transfer via SI\/SO. QPI mode: 4x bandwidth via all four SIO lines. Internal refresh controller manages DRAM cell refresh autonomously. Linear burst crosses page boundaries; 32-byte wrapped burst stays within page. Software reset restores default state.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>CE#<\/td>Input<\/td>Chip select<\/td><\/tr>
      2<\/td>SO\/SIO[1]<\/td>I\/O<\/td>Data out \/ IO1<\/td><\/tr>
      3<\/td>SIO[2]<\/td>I\/O<\/td>IO2 \/ WP#<\/td><\/tr>
      4<\/td>VSS<\/td>Power<\/td>Ground<\/td><\/tr>
      5<\/td>SI\/SIO[0]<\/td>I\/O<\/td>Data in \/ IO0<\/td><\/tr>
      6<\/td>SCLK<\/td>Input<\/td>Clock<\/td><\/tr>
      7<\/td>SIO[3]<\/td>I\/O<\/td>IO3 \/ HOLD#<\/td><\/tr>
      8<\/td>VCC<\/td>Power<\/td>3.3V supply<\/td><\/tr><\/table>","application_scenarios":"
      • ESP32 PSRAM expansion (drop-in for LY68L6400SLIT)<\/li>
      • RP2350 external PSRAM<\/li>
      • IoT device auxiliary memory<\/li>
      • Wearable display buffer<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        Lyontek<\/td>LY68L6400SLIT<\/td>SOP-8<\/td>Original (supply constrained)<\/td><\/tr>
        IPUS<\/td>IPS6404LSQ<\/td>SOP-8<\/td>64Mb 3.3V alternative<\/td><\/tr>
        Cascadeteq<\/td>CSS1604SS-MI<\/td>SOP-8<\/td>16Mb domestic alternative<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts\/12351","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=12351"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts\/12351\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/media?parent=12351"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/categories?post=12351"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/tags?post=12351"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=12351"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}