M2S28D20ATP Datasheet, PDF (8/36 Pages) Mitsubishi Electric Semiconductor – 128M Double Data Rate Synchronous DRAM

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
WRITE(Auto-
Precharge
Disabled)
/CS /RAS /CAS /WE Address
H X X XX
L H H HX
L H H L BA
L H L H BA, CA, A10
Command
DESEL
NOP
TERM
READ / READA
LH
LL
LL
LL
LL
HX
READ with
Auto-Precharge ^{L H}
LH
LH
LH
LL
LL
LL
LL
HX
WRITE with
Auto-Precharge ^{L H}
LH
LH
LH
LL
LL
LL
LL
L L BA, CA, A10 WRITE / WRITEA
H H BA, RA
ACT
H L BA, A10
PRE / PREA
L HX
REFA
L L ^{Op-Code, Mode-} MRS
Add
X XX
DESEL
H HX
NOP
H L BA
TERM
L H BA, CA, A10 READ / READA
L L BA, CA, A10 WRITE / WRITEA
H H BA, RA
ACT
H L BA, A10
PRE / PREA
L HX
REFA
L L ^{Op-Code, Mode-} MRS
Add
X XX
DESEL
H HX
NOP
H L BA
TERM
L H BA, CA, A10 READ / READA
L L BA, CA, A10 WRITE / WRITEA
H H BA, RA
ACT
H L BA, A10
PRE / PREA
L HX
REFA
Op-Code, Mode-
L L _Add
MRS
Action
NOP (Continue Burst to END)
NOP (Continue Burst to END)
ILLEGAL
Terminate Burst, Latch CA, Begin
Read, Determine Auto-Precharge
Terminate Burst, Latch CA, Begin
Write, Determine Auto-Precharge
Bank Active / ILLEGAL
Terminate Burst, Precharge
ILLEGAL
ILLEGAL
NOP (Continue Burst to END)
NOP (Continue Burst to END)
ILLEGAL
ILLEGAL
ILLEGAL
Bank Active / ILLEGAL
Precharge / ILLEGAL
ILLEGAL
ILLEGAL
NOP (Continue Burst to END)
NOP (Continue Burst to END)
ILLEGAL
ILLEGAL
ILLEGAL
Bank Active / ILLEGAL
Precharge / ILLEGAL
ILLEGAL
ILLEGAL
Notes
3
3
2
2
2
2
2
MITSUBISHI ELECTRIC
8