IC43R16160 Datasheet, PDF(47/56 Page) Integrated Circuit Solution Inc – 4M x 16 Bit x 4 Banks (256-MBIT) DDR SDRAM

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IC43R16160 Datasheet, PDF (47/56 Pages) Integrated Circuit Solution Inc – 4M x 16 Bit x 4 Banks (256-MBIT) DDR SDRAM

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IC43R16160

Figure 40 - AUTO REFRESH MODE

/CK

CKE

COMMAND

tIS tIH

NOP

tCK

tCH tCL

VALID

PRE

NOP

A0-A8

A9, A11

A10

BA0, BA1

ALL BANKS

ONE BANK

tIS tIH

*Bank(s)

DQS

((

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NOP

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((

VALID

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((

NOP

ACT

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t RP

t RC

* = "Don't Care", if A10 is HIGH at this point; A10 must be HIGH if more than one bank is active (i.e. must precharge all active banks)

PRE = PRECHARGE, ACT = ACTIVE, RA = Row Address, BA = Bank Address, AR = AUTOREFRESH

NOP commands are shown for ease of illustration; other valid commands may be possible at these times

DM, DQ and DQS signals are all "Don't Care"/High-Z for operations shown

DON'T CARE

Integrated Circuit Solution Inc.

DDR001-0B 11/10/2004

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