eorex
Burst Type (A3)
Burst Length
2
A2
X
X
X
4
X
X
X
0
0
0
8
0
1
1
1
1
A1
X
X
0
0
1
1
0
0
1
1
0
0
1
1
A0
0
0
0
1
0
1
0
1
0
1
0
1
0
1
01
10
0123
1230
2301
3012
01234567
12345670
23456701
34567012
45670123
56701234
67012345
70123456
EM48AM1684VBA
Sequential Addressing
Interleave Addressing
01
10
0123
1032
2301
3210
01234567
10325476
23016745
32107654
45670123
54761032
67452301
76543210
-
Full Page*
n
n
n
Cn Cn+1 Cn+2……
* Page length is a function of I/O organization and column addressing
×16
(CA0 ~ CA8):
Full page = 512bits
1. Command Truth Table
Command
Ignore Command
No Operation
Burst Stop
Read
Read with Auto Pre-charge
Write
Write with Auto Pre-charge
Bank Activate
Pre-charge Select Bank
Pre-charge All Banks
Symbol
DESL
NOP
BSTH
READ
READA
WRIT
WRITA
ACT
PRE
PALL
CKE
n-1 n
H X
H
H
H
H
H
H
H
H
H
X
X
X
X
X
X
X
X
X
/CS
H
L
L
L
L
L
L
L
L
L
/RAS
X
H
H
H
H
H
L
L
L
L
/CAS
X
H
H
L
L
L
H
H
H
H
/WE
X
H
L
H
H
L
H
H
L
L
BA0,
BA1
X
X
X
V
V
V
V
V
V
X
A10
X
X
X
L
H
L
H
V
L
H
L
A11,
A9~A10
X
X
X
V
V
V
V
V
X
X
V
Mode Register Set
MRS
H X
L
L
L
L
L
H = High level, L = Low level, X = High or Low level (Don't care), V = Valid data input
Jul. 2006
11/17
www.eorex.com
EOREX [ EOREX CORPORATION ]
