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IS67WVE4M16BLL Datasheet(PDF) 7 Page - Integrated Silicon Solution, Inc

Part # IS67WVE4M16BLL
Description  Asynchronous and page mode interface
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Manufacturer  ISSI [Integrated Silicon Solution, Inc]
Direct Link  http://www.issi.com
Logo ISSI - Integrated Silicon Solution, Inc

IS67WVE4M16BLL Datasheet(HTML) 7 Page - Integrated Silicon Solution, Inc

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IS66WVE4M16EALL/BLL/CLL
IS67WVE4M16EALL/BLL/CLL
Rev.0B | November 2014
www.issi.com - SRAM@issi.com
Functional Description
In general, this device is high-density alternatives to SRAM and Pseudo SRAM products popular
in low-power, portable applications.
The 64Mb device contains a 64Mb DRAM core organized as 4,194,304 addresses by
16 bits. This device include the industry-standard, asynchronous memory interface found on
other low-power SRAM or PSRAM offerings
Page mode access is also supported as a bandwidth-enhancing extension to the asynchronous
read protocol.
Power-Up Initialization
PSRAM products include an on-chip voltage sensor that is used to launch the power-up
initialization process. Initialization will load the CR with its default settings (see Table 3).
VDD and VDDQ must be applied simultaneously. When they reach a stable level above
VDD, the device will require 150μs to complete its self-initialization process ( see Figure 1).
During the initialization period, CE# should remain HIGH. When initialization is complete,
the device is ready for normal operation.
Figure 1: Power-Up Initialization Timing
VDD
Device Initialization
tPU > 150us
Device ready for
normal operation
VDD
VDDQ


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