M2S28D20ATP 查看數據表（PDF） - MITSUBISHI ELECTRIC
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M2S28D20ATP Datasheet PDF : 36 Pages
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DDR SDRAM (Rev.0.1)
Jun,'00 Preliminary
MITSUBISHI LSIs
M2S28D20/ 30/ 40ATP
128M Double Data Rate Synchronous DRAM
FUNCTION TRUTH TABLE (continued)
Current State /CS /RAS /CAS /WE Address
Command
PRE-
H X X XX
DESEL
CHARGING L H H H X
NOP
L H H L BA
TERM
L H L X BA, CA, A10 READ / WRITE
L L H H BA, RA
ACT
L L H L BA, A10
PRE / PREA
L L L HX
REFA
LL
L L Op-Code, Mode- MRS
Add
HX
ROW
ACTIVATING L H
LH
X XX
H HX
H L BA
DESEL
NOP
TERM
L H L X BA, CA, A10 READ / WRITE
L L H H BA, RA
ACT
L L H L BA, A10
PRE / PREA
L L L HX
REFA
LL
L L Op-Code, Mode- MRS
Add
HX
WRITE RE-
COVERING L H
LH
X XX
H HX
H L BA
DESEL
NOP
TERM
L H L X BA, CA, A10 READ / WRITE
L L H H BA, RA
ACT
L L H L BA, A10
PRE / PREA
L L L HX
REFA
LL
Op-Code, Mode-
L L Add
MRS
Action
NOP (Idle after tRP)
NOP (Idle after tRP)
ILLEGAL
ILLEGAL
ILLEGAL
NOP (Idle after tRP)
ILLEGAL
ILLEGAL
NOP (Row Active after tRCD)
NOP (Row Active after tRCD)
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
NOP
NOP
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
Notes
2
2
2
4
2
2
2
2
2
2
2
2
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