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IS43DR86400E - DDR2 DRAM

Download the IS43DR86400E datasheet PDF. This datasheet also covers the IS46DR86400E variant, as both devices belong to the same ddr2 dram family and are provided as variant models within a single manufacturer datasheet.

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Note: The manufacturer provides a single datasheet file (IS46DR86400E-ISSI.pdf) that lists specifications for multiple related part numbers.

General Description

ISSI's 512Mb DDR2 SDRAM uses a double-data-rate architecture to achieve high-speed operation.

The double-data rate architecture is essentially a 4n-prefetch architecture, with an interface designed to transfer two data words per clock cycle at the I/O balls.

Overview

IS43/46DR86400E IS43/46DR16320E 64Mx8, 32Mx16 DDR2 DRAM.

Key Features

  • Vdd = 1.8V ±0.1V, Vddq = 1.8V ±0.1V.
  • JEDEC standard 1.8V I/O (SSTL_18-compatible).
  • Double data rate interface: two data transfers per clock cycle.
  • Differential data strobe (DQS, DQS).
  • 4-bit prefetch architecture.
  • On chip DLL to align DQ and DQS transitions with CK.
  • 4 internal banks for concurrent operation.
  • Programmable CAS latency (CL) 3, 4, 5, and 6 supported.
  • Posted CAS and programmable additive latency (AL) 0,.