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MT46V32M4-1 数据表(PDF) 41 Page - Micron Technology

部件名 MT46V32M4-1
功能描述  DOUBLE DATA RATE DDR SDRAM
Download  68 Pages
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制造商  MICRON [Micron Technology]
网页  http://www.micron.com
标志 MICRON - Micron Technology

MT46V32M4-1 数据表(HTML) 41 Page - Micron Technology

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128Mb: x4, x8, x16 DDR SDRAM
Micron Technology, Inc., reserves the right to change products or specifications without notice.
128Mx4x8x16DDR_C.p65 – Rev. C; Pub. 4/01
©2001, Micron Technology, Inc.
128Mb: x4, x8, x16
DDR SDRAM
PRELIMINARY
TRUTH TABLE 4 – CURRENT STATE BANK n – COMMAND TO BANK m
(Notes: 1-6; notes appear below and on next page)
CURRENT STATE CS# RAS# CAS# WE#
COMMAND/ACTION
NOTES
Any
H
X
X
X
DESELECT (NOP/continue previous operation)
L
H
H
H
NO OPERATION (NOP/continue previous operation)
Idle
XXXX
Any Command Otherwise Allowed to Bank m
Row
L
L
H
H
ACTIVE (select and activate row)
Activating,
L
H
L
H
READ (select column and start READ burst)
7
Active, or
L
H
L
L
WRITE (select column and start WRITE burst)
7
Precharging
L
L
H
L
PRECHARGE
Read
L
L
H
H
ACTIVE (select and activate row)
(Auto-
L
H
L
H
READ (select column and start new READ burst)
7
Precharge
L
H
L
L
WRITE (select column and start WRITE burst)
7, 9
Disabled)
L
L
H
L
PRECHARGE
Write
L
L
H
H
ACTIVE (select and activate row)
(Auto-
L
H
L
H
READ (select column and start READ burst)
7,8
Precharge
L
H
L
L
WRITE (select column and start new WRITE burst)
7
Disabled)
L
L
H
L
PRECHARGE
Read
L
L
H
H
ACTIVE (select and activate row)
(With Auto-
L
H
L
H
READ (select column and start new READ burst)
7, 3a
Precharge)
L
H
L
L
WRITE (select column and start WRITE burst)
7, 9, 3a
L
L
H
L
PRECHARGE
Write
L
L
H
H
ACTIVE (select and activate row)
(With Auto-
L
H
L
H
READ (select column and start READ burst)
7, 3a
Precharge)
L
H
L
L
WRITE (select column and start new WRITE burst)
7, 3a
L
L
H
L
PRECHARGE
NOTE:
1. This table applies when CKEn-1 was HIGH and CKEn is HIGH (see Truth Table 2) and after tXSNR has been
met (if the previous state was self refresh).
2. This table describes alternate bank operation, except where noted (i.e., the current state is for bank n and
the commands shown are those allowed to be issued to bank m, assuming that bank m is in such a state
that the given command is allowable). Exceptions are covered in the notes below.
(Notes continue on next page)


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