EM484M3244VBE
eorex
Burst Type (A3)
Burst Length
A2
A1
A0
Sequential Addressing
Interleave Addressing
01
X
X
X
X
X
X
0
0
0
0
1
1
1
1
n
X
X
0
0
1
1
0
0
1
1
0
0
1
1
n
0
0
0
1
0
1
0
1
0
1
0
1
0
1
n
01
2
10
10
0123
0123
1230
1032
4
2301
2301
3012
3210
01234567
12345670
23456701
34567012
45670123
56701234
67012345
70123456
Cn Cn+1 Cn+2……
01234567
10325476
23016745
32107654
45670123
54761032
67452301
76543210
-
8
Full Page*
* Page length is a function of I/O organization and column addressing X32 (CA0 ~ CA7):
Full page = 256bits
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
Dec. 2013
www.eorex.com
12/18
EOREX [ EOREX CORPORATION ]
