{"id":12324,"date":"2026-07-28T03:24:08","date_gmt":"2026-07-28T03:24:08","guid":{"rendered":"https:\/\/ic-vendor.com\/ly68l6400slit\/"},"modified":"2026-07-28T03:24:08","modified_gmt":"2026-07-28T03:24:08","slug":"ly68l6400slit","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/ar\/ly68l6400slit\/","title":{"rendered":"LY68L6400SLIT"},"content":{"rendered":"

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

The LY68L6400SLIT is a 64Mb (8M x 8-bit) Serial Pseudo-SRAM (PSRAM) from Lyontek Inc., operating at 3.3V with SPI\/QPI interface. It features a clock rate up to 133 MHz (wrapped burst) and 84 MHz (linear burst with page boundary crossing), with self-managed refresh. The SLIT variant is packaged in an 8-pin 150mil SOP with tape & reel packing, widely used in embedded systems including ESP32 and Raspberry Pi RP2350.<\/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
\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>\n2.7 \u0641\u0648\u0644\u062a \u0625\u0644\u0649 3.6 \u0641\u0648\u0644\u062a<\/td>\n<\/tr>\n
\u0627\u0644\u0648\u0627\u062c\u0647\u0629<\/td>\nSPI \/ QPI (SDR mode)<\/td>\n<\/tr>\n
Max Clock Rate<\/td>\n133 MHz (wrapped), 84 MHz (linear crossing)<\/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>\n200 \u00b5A max @ 85\u00b0C<\/td>\n<\/tr>\n
Operating Current<\/td>\n40 mA max<\/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
Packing<\/td>\nTape & Reel<\/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 Serial Pseudo-SRAM at 3.3V<\/li>\n
  • Self-managed refresh \u2014 no external DRAM refresh required<\/li>\n
  • Clock rate up to 133 MHz (wrapped burst), 84 MHz (linear crossing)<\/li>\n
  • Linear burst or 32-byte wrapped burst via toggle command<\/li>\n
  • Software reset and built-in voltage sensor<\/li>\n
  • 50\u03a9 output drive strength LVCMOS<\/li>\n
  • Tape & reel packing for automated assembly<\/li>\n
  • Green \/ RoHS compliant package<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • ESP32 \/ RP2350 external PSRAM expansion<\/li>\n
    • Wearable and IoT devices<\/li>\n
    • Portable consumer electronics<\/li>\n
    • Smart home appliances<\/li>\n
    • Microcontroller external RAM<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The LY68L6400SLIT is a 64Mb (8M x 8-bit) Serial Pseudo-SRAM (PSRAM) from Lyontek Inc., operating at 3.3V with SPI\/QPI interface. It features a clock rate up to 133 MHz (wrapped burst) and 84 MHz (linear burst with page boundary crossing), with self-managed refresh. The SLIT variant is packaged in an 8-pin 150mil SOP […]<\/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":[3318],"chip_brand":[3315],"class_list":["post-12324","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","tag-ly68l6400slit","chip_brand-lyontek"],"acf":{"brief_explanation":"64Mb 3.3V SPI\/QPI PSRAM, 133MHz, 8Mx8, self-refresh, SOP-8, tape&reel","date_code":"","package_case":"SOP-8 (150mil)","in_stock":8915,"datasheet":"https:\/\/www.lyontek.com.tw\/pdf\/ddr\/LY68L6400-1.2.pdf","price":"$1.60 @ 1pc","product_introduction":"The LY68L6400SLIT is a 64Mb (8M x 8-bit) Serial Pseudo-SRAM from Lyontek Inc. operating at 2.7V to 3.6V with SPI and QPI interfaces. The device features self-managed refresh, eliminating the need for external DRAM refresh control. With clock rates up to 133 MHz in wrapped burst mode and 84 MHz in linear burst with page boundary crossing, it delivers high bandwidth for embedded applications. The 8-pin 150mil SOP package with tape & reel packing is widely used in ESP32 and Raspberry Pi RP2350 PSRAM expansion designs.","working_principle":"The LY68L6400 operates as a serial pseudo-SRAM using an internal DRAM array with integrated refresh management. In SPI mode, data is transferred serially via SI\/SIO[0] and SO\/SIO[1]. In QPI mode, all four data lines SIO[0:3] transfer data simultaneously for 4x bandwidth. An internal refresh controller autonomously refreshes the DRAM cells. Linear burst mode allows continuous reads across page boundaries at up to 84 MHz, while wrapped burst reaches 133 MHz. Software reset restores the device to default state.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>CE#<\/td>Input<\/td>Chip select, active low<\/td><\/tr>
      2<\/td>SO\/SIO[1]<\/td>I\/O<\/td>Serial output \/ Quad data[1]<\/td><\/tr>
      3<\/td>SIO[2]<\/td>I\/O<\/td>Quad data[2] \/ WP#<\/td><\/tr>
      4<\/td>VSS<\/td>Power<\/td>Ground<\/td><\/tr>
      5<\/td>SI\/SIO[0]<\/td>I\/O<\/td>Serial input \/ Quad data[0]<\/td><\/tr>
      6<\/td>SCLK<\/td>Input<\/td>Clock signal<\/td><\/tr>
      7<\/td>SIO[3]<\/td>I\/O<\/td>Quad data[3] \/ HOLD#<\/td><\/tr>
      8<\/td>VCC<\/td>Power<\/td>3.3V supply<\/td><\/tr><\/table>","application_scenarios":"
      • ESP32 \/ ESP32-S3 \/ RP2350 external PSRAM for Wi-Fi and display buffering<\/li>
      • Wearable device display frame buffer<\/li>
      • IoT sensor data logging<\/li>
      • General embedded RAM expansion<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        Lyontek<\/td>LY68S6400BAIT<\/td>DFN-8<\/td>1.8V variant, same 64Mb<\/td><\/tr>
        APMemory<\/td>APS6404L-3SQR-SN<\/td>SOP-8<\/td>Drop-in 64Mb 3.3V replacement<\/td><\/tr>
        IPUS<\/td>IPS6404LSQ<\/td>SOP-8<\/td>64Mb 3.3V alternative<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts\/12324","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=12324"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts\/12324\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/media?parent=12324"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/categories?post=12324"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/tags?post=12324"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=12324"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}