MT12D436 Datasheet, PDF (4/17 Pages) Micron Technology – DRAM MODULE

OBSOLETE
4, 8 MEG x 36
PARITY DRAM SIMMs
TRUTH TABLE
ADDRESSES
FUNCTION
RAS#
CAS#
WE#
t_R
t_C
Standby
H
H→X
X
X
X
READ
L
L
H
ROW
COL
EARLY WRITE
L
L
L
ROW
COL
FAST-PAGE-MODE 1st Cycle
L
H→L
H
ROW
COL
READ
2nd Cycle
L
H→L
H
n/a
COL
FAST-PAGE-MODE 1st Cycle
L
H→L
L
ROW
COL
EARLY-WRITE
2nd Cycle
L
H→L
L
n/a
COL
RAS#-ONLY REFRESH
L
H
X
ROW
n/a
HIDDEN
READ
L→H→L
L
H
ROW
COL
REFRESH
WRITE
L→H→L
L
L
ROW
COL
CBR REFRESH
H→L
L
H
X
X
DATA-IN/OUT
DQ1-DQ36
High-Z
Data-Out
Data-In
Data-Out
Data-Out
Data-In
Data-In
High-Z
Data-Out
Data-In
High-Z
JEDEC-DEFINED
PRESENCE-DETECT – MT12D436 (16MB)
SYMBOL
PRD1
PRD2
PRD3
PRD4
PIN
-6
67
VSS
68
NC
69
NC
70
NC
JEDEC-DEFINED
PRESENCE-DETECT – MT24D836 (32MB)
SYMBOL
PRD1
PRD2
PRD3
PRD4
PIN
-6
67
NC
68
VSS
69
NC
70
NC
4, 8 Meg x 36 Parity DRAM SIMMs
DM45.pm5 – Rev. 3/97
4
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„1997, Micron Technology, Inc.