{"id":12361,"date":"2026-07-28T03:41:10","date_gmt":"2026-07-28T03:41:10","guid":{"rendered":"https:\/\/ic-vendor.com\/css1604ls-li\/"},"modified":"2026-07-28T03:41:10","modified_gmt":"2026-07-28T03:41:10","slug":"css1604ls-li","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/zh\/css1604ls-li\/","title":{"rendered":"CSS1604LS-LI"},"content":{"rendered":"

\u4ea7\u54c1\u6982\u89c8<\/h2>\n

The CSS1604LS-LI is a 16Mbit (2M x 8-bit) Quad-SPI Pseudo-SRAM (PSRAM) from Cascadeteq (\u51ef\u82af), identical to the CSS1604SS-MI but designated for 3.3V operation with SOP-8L (150mil) package and industrial temperature range (-40\u00b0C to +85\u00b0C). It features self-managed refresh, configurable wrap burst, and programmable output drive, serving as a domestic alternative to imported PSRAM chips.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n
Density<\/td>\n16Mb (2M x 8 bits)<\/td>\n<\/tr>\n
\u7535\u6e90\u7535\u538b<\/td>\n1.62V to 3.6V<\/td>\n<\/tr>\n
Interface<\/td>\nSPI \/ QPI<\/td>\n<\/tr>\n
Max Clock Rate<\/td>\n133 MHz (wrapped), 84 MHz (linear)<\/td>\n<\/tr>\n
Page Size<\/td>\n512 bytes<\/td>\n<\/tr>\n
Refresh<\/td>\nSelf-managed<\/td>\n<\/tr>\n
Standby Current<\/td>\n35 \u00b5A typical @ 25\u00b0C<\/td>\n<\/tr>\n
Operating Temp<\/td>\n-40\u00b0C to +85\u00b0C<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nSOP-8L (150mil)<\/td>\n<\/tr>\n
\u90e8\u4ef6\u72b6\u6001<\/td>\n\u6d3b\u8dc3<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • 16Mb SPI\/QPI PSRAM from Cascadeteq<\/li>\n
  • Self-managed refresh<\/li>\n
  • Configurable wrap burst: 16\/32\/64\/512 bytes<\/li>\n
  • Programmable output drive: 50\/100\/200\u03a9<\/li>\n
  • SOP-8L (150mil) standard package<\/li>\n
  • Industrial temperature range<\/li>\n
  • Domestic alternative to imported PSRAM<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • MCU external PSRAM<\/li>\n
    • IoT and wearable devices<\/li>\n
    • ESP32 \/ STM32 auxiliary memory<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The CSS1604LS-LI is a 16Mbit (2M x 8-bit) Quad-SPI Pseudo-SRAM (PSRAM) from Cascadeteq (\u51ef\u82af), identical to the CSS1604SS-MI but designated for 3.3V operation with SOP-8L (150mil) package and industrial temperature range (-40\u00b0C to +85\u00b0C). It features self-managed refresh, configurable wrap burst, and programmable output drive, serving as a domestic alternative to imported PSRAM […]<\/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":[3357],"chip_brand":[3333],"class_list":["post-12361","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","tag-css1604ls-li","chip_brand-cascadeteq"],"acf":{"brief_explanation":"16Mb SPI\/QPI PSRAM, 2Mx8, 1.62~3.6V, 133MHz, self-refresh, SOP-8L, industrial","date_code":"","package_case":"SOP-8L (150mil)","in_stock":7654,"datasheet":"https:\/\/img1.wsimg.com\/blobby\/go\/8f892fc9-b89e-454a-b944-46373058ecd7\/downloads\/CSS1604L%2016Mbit%203.3V%20QSPI%20pSRAM..pdf","price":"","product_introduction":"The CSS1604LS-LI is a 16Mbit (2M x 8-bit) Quad-SPI Pseudo-SRAM from Cascadeteq in SOP-8L (150mil) package with industrial temperature range. Operating at 1.62V to 3.6V with SPI\/QPI interfaces and clock rates up to 133 MHz, it features self-managed refresh, configurable wrap burst lengths, and programmable output drive. It serves as a domestic (Chinese) alternative to imported PSRAM chips like the LY68L6400 and APS6404L.","working_principle":"Serial pseudo-SRAM with internal DRAM array and self-refresh. SPI mode transfers data via SI\/SO; QPI mode uses all four SIO lines for 4x bandwidth. Internal refresh controller autonomously maintains DRAM cells. Configurable wrap burst (16\/32\/64\/512 bytes) and linear 512-byte burst provide access pattern flexibility. Programmable output drive (50\/100\/200\u03a9) for signal integrity tuning.","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[1]<\/td><\/tr>
      3<\/td>SIO[2]<\/td>I\/O<\/td>Data[2]<\/td><\/tr>
      4<\/td>VSS<\/td>Power<\/td>Ground<\/td><\/tr>
      5<\/td>SI\/SIO[0]<\/td>I\/O<\/td>Data[0]<\/td><\/tr>
      6<\/td>CLK<\/td>Input<\/td>Clock<\/td><\/tr>
      7<\/td>SIO[3]<\/td>I\/O<\/td>Data[3]<\/td><\/tr>
      8<\/td>VDD<\/td>Power<\/td>Supply<\/td><\/tr><\/table>","application_scenarios":"
      • ESP32 \/ STM32 external PSRAM<\/li>
      • IoT device auxiliary memory<\/li>
      • Wearable display frame buffer<\/li>
      • Smart home MCU memory expansion<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        Cascadeteq<\/td>CSS1604SU-MI<\/td>USON-8L<\/td>Ultra-compact variant<\/td><\/tr>
        Lyontek<\/td>LY68L6400SLIT<\/td>SOP-8<\/td>64Mb imported alternative<\/td><\/tr>
        Alliance<\/td>APS1604M-3SQR-SN<\/td>SOP-8<\/td>64Mb Alliance alternative<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/12361","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/comments?post=12361"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/12361\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/media?parent=12361"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/categories?post=12361"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/tags?post=12361"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=12361"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}