64WQ datasheet(7/46 Pages) NUMONYX

7 / 46 page

November 2007

Datasheet

Order Number: 251407-13

32WQ and 64WQ Family with Asynchronous RAM

RFU

Reserved for Future Use

SCSP

Stacked Chip Scale Package

Status Register

SRD

Status Register Data

Word

16 bits

WSM

Write State Machine

1.2

Conventions

Group Membership Brackets: Square brackets are used to designate group membership

or to define a group of signals with a similar function, such as A[21:1] and SR[4,1].

VCC vs. VCC: When referring to a signal or package-connection name, the notation

used is VCC, etc. When referring to a timing or electrical level, the notation used is

subscripted such as VCC, etc.

Device: This term is used interchangeably throughout this document to denote either a

particular die, or the combination of multiple die within a single package.

F[3:1]-CE#, F[2:1]-OE#: This is the method used to refer to more than one chip-

enable or output enable at the same time. When each is referred to individually, the

reference will be F1-CE# and F1-OE# (for die #1), and F2-CE# and F2-OE# (for die

#2).

F-VCC, P-VCC or S-VCC: When referencing flash memory signals or timings, the

notation used is F-VCC or F-VCC, respectively. When the reference is to PSRAM signals

or timings, the notation is prefixed with “P-” (e.g., P-VCC, P-VCC). When referencing

SRAM signals or timings, the notation is prefixed with “S-” (e.g., S-VCC or S-VCC). P-

VCC and S-VCC are RFU for stacked combinations that do not include PSRAM or SRAM.

R-OE#, R-LB#, R-UB#, R-WE#: These are used to identify RAM OE#, LB#, UB#,

WE# signals, and are usually shared between 2 or more RAM die. R-OE#, R-LB#, R-

UB# and R-WE are RFU for stacked combinations that do not include PSRAM or SRAM.

64WQ Datasheet(PDF) 7 Page - Numonyx B.V