FEDD56V62160MTA-06 Datasheet, PDF (27/43 Pages) Rohm – 16-Bit SYNCHRONOUS DYNAMIC RAM

FEDD56V62160MTA-06
MD56V62160M-xxTA
FUNCTION TRUTH TABLE (Table 1) (1/3)
Current
State *¹
Idle
Row
Active
Read
Write
/CS /RAS /CAS /WE
ADDR
Command
Action
H
X
X
X
X
NOP
NOP
L
H
H
X
X
NOP/BST NOP
L
H
L
H BA, CA, A10 RD/RDA ILLEGAL ^*2
L
H
L
L BA, CA, A10 WRT/WRTA ILLEGAL ^*2
L
L
H
H
BA, RA
ACT
Row Active
L
L
H
L
BA, A10
PRE/PALL NOP ^*3
L
L
L
H
X
REF
Auto-Refresh or Self-Refresh ^*4
L
L
L
L
V, A12=0,
A13=0
MRS
Mode Register Set ^*4
L
L
L
L
V, A12=1,
A13=0
EMRS
Extended Mode Register Set ^*4
H
X
X
X
X
NOP
NOP
L
H
H
X
X
NOP/BST NOP
L
H
L
H BA, CA, A10 RD/RDA Read
L
H
L
L BA, CA, A10 WRT/WRTA Write
L
L
H
H
BA, RA
ACT
ILLEGAL ^*6
L
L
H
L
BA, A10
PRE/PALL Precharge
L
L
L
H
X
REF
ILLEGAL
L
L
L
L
X
MRS/EMRS ILLEGAL
H
X
X
X
X
NOP
Continue Row Active after Burst ends
L
H
H
H
X
NOP
Continue Row Active after Burst ends
L
H
H
L
X
BST
Term Burst  Row Active
L
H
L
H BA, CA, A10 RD/RDA Term Burst, start new Burst Read
L
H
L
L BA, CA, A10 WRT/WRTA Term Burst, start new Burst Write
L
L
H
H
BA, RA
ACT
ILLEGAL ^*6
L
L
H
L
BA, A10
PRE/PALL Term Burst, execute Row Precharge
L
L
L
H
X
REF
ILLEGAL
L
L
L
L
X
MRS/EMRS ILLEGAL
H
X
X
X
X
X
Continue Row Active after Burst ends
L
H
H
H
X
X
Continue Row Active after Burst ends
L
H
H
L
X
X
Term Burst  Row Active
L
H
L
H BA, CA, A10 CA, A10 Term Burst, start new Burst Read
L
H
L
L BA, CA, A10 CA, A10 Term Burst, start new Burst Write
L
L
H
H
BA, RA
RA
ILLEGAL ^*6
L
L
H
L
BA, A10
A10
Term Burst, execute Row Precharge
L
L
L
H
X
REF
ILLEGAL
L
L
L
L
X
MRS/EMRS ILLEGAL
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