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IS43QR16256B - 256Mb x 16 4Gb DDR4 SDRAM

Download the IS43QR16256B datasheet PDF. This datasheet also covers the IS46QR85120B variant, as both devices belong to the same 256mb x 16 4gb ddr4 sdram family and are provided as variant models within a single manufacturer datasheet.

General Description

Symbol Type

Key Features

  • Standard Voltage : VDD = VDDQ = 1.2V, VPP=2.5V.
  • High speed data transfer rates with system frequency up to 2666 Mbps.
  • Data Integrity - Auto Self Refresh (ASR) by DRAM built-in TS - Auto Refresh and Self Refresh Modes.
  • DRAM access bandwidth - Separated IO gating structures by Bank Groups - Self Refresh Abort - Fine Granularity Refresh.
  • Signal Synchronization - Write Leveling via MR settings - Read Leveling via MPR.
  • Reliability & Error Handlin.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (IS46QR85120B-ISSI.pdf) that lists specifications for multiple related part numbers.

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Other Datasheets by ISSI (now Infineon)

Part Number Description
IS43QR16256A 256Mbx16 4Gb DDR4 SDRAM
IS43QR16512A 8Gb DDR4 SDRAM
IS43QR81024A 8Gb DDR4 SDRAM
IS43QR85120A 4Gb DDR4 SDRAM
IS43QR85120B 512Mb x 8 4Gb DDR4 SDRAM

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
IS43/46QR85120B IS43/46QR16256B ® Long-term Support World Class Quality 512Mbx8, 256Mbx16 4Gb DDR4 SDRAM MAY 2024 FEATURES • Standard Voltage : VDD = VDDQ = 1.2V, VPP=2.