eorex
EM48AM1684VBA
Burst Type (A3)
Burst Length
A2
X
X
X
X
X
X
0
A1
X
X
0
0
1
1
0
0
1
1
0
0
1
1
n
A0
0
0
0
1
0
1
0
1
0
1
0
1
0
1
n
Sequential Addressing
Interleave Addressing
0 1
0 1
2
1 0
1 0
0 1 2 3
0 1 2 3
1 2 3 0
1 0 3 2
4
2 3 0 1
2 3 0 1
3 0 1 2
3 2 1 0
0 1 2 3 4 5 6 7
1 2 3 4 5 6 7 0
2 3 4 5 6 7 0 1
3 4 5 6 7 0 1 2
4 5 6 7 0 1 2 3
5 6 7 0 1 2 3 4
6 7 0 1 2 3 4 5
7 0 1 2 3 4 5 6
Cn Cn+1 Cn+2……
0 1 2 3 4 5 6 7
1 0 3 2 5 4 7 6
2 3 0 1 6 7 4 5
3 2 1 0 7 6 5 4
4 5 6 7 0 1 2 3
5 4 7 6 1 0 3 2
6 7 4 5 2 3 0 1
7 6 5 4 3 2 1 0
-
0
0
0
8
1
1
1
1
Full Page*
n
* Page length is a function of I/O organization and column addressing ×16 (CA0 ~ CA8):
Full page = 512bits
1. Command Truth Table
CKE
n-1
BA0,
BA1
A11,
A9~A10
Command
Symbol
/CS /RAS /CAS /WE
A10
n
X
X
X
X
X
X
X
X
X
X
X
Ignore Command
No Operation
Burst Stop
DESL
NOP
H
H
H
H
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
L
L
X
H
H
H
H
H
L
X
H
H
L
X
H
L
X
X
X
V
V
V
V
V
V
X
L
X
X
X
L
X
X
X
V
V
V
V
V
X
X
V
BSTH
READ
Read
H
H
L
Read with Auto Pre-charge READA
Write WRIT
Write with Auto Pre-charge WRITA
L
H
L
L
H
H
H
H
L
H
H
L
H
V
L
Bank Activate
ACT
PRE
PALL
MRS
L
Pre-charge Select Bank
Pre-charge All Banks
Mode Register Set
L
L
L
H
L
L
L
H = High level, L = Low level, X = High or Low level (Don't care), V = Valid data input
Jul. 2006
www.eorex.com
11/17
EOREX [ EOREX CORPORATION ]
