EtronTech
A2
0
0
0
0
1
1
1
1
Full Page Length : 512
A1
0
0
1
1
0
0
1
1
A0
0
1
0
1
0
1
0
1
Burst Length
1
2
4
8
Reserved
Reserved
Reserved
Full Page
EM639165
•
Burst Length Field (A2~A0)
This field specifies the data length of column access using the A2~A0 pins and selects the Burst
Length to be 2, 4, 8, or full page.
•
Burst Type Field (A3)
The Burst Type can be one of two modes, Interleave Mode or Sequential Mode.
A3
0
1
Burst Type
Sequential
Interleave
--- Addressing Sequence of Sequential Mode
An internal column address is performed by increasing the address from the column address which
is input to the device. The internal column address is varied by the Burst Length as shown in the
following table. When the value of column address, (n + m), in the table is larger than 255, only the
least significant 8 bits are effective.
Data n
Column Address
0
n
1
n+1
2
n+2
3
n+3
4
n+4
5
n+5
6
n+6
7
n+7
-
-
255
n+255
256
n
257
n+1
-
-
2 words:
Burst Length
4 words:
8 words:
Full Page: Column address is repeated until terminated.
--- Addressing Sequence of Interleave Mode
A column access is started in the input column address and is performed by inverting the address
bits in the sequence shown in the following table.
Data n
Data 0
Data 1
Data 2
Data 3
Data 4
Data 5
Data 6
Data 7
A7
A7
A7
A7
A7
A7
A7
A7
A6
A6
A6
A6
A6
A6
A6
A6
A5
A5
A5
A5
A5
A5
A5
A5
A4
A4
A4
A4
A4
A4
A4
A4
Column Address
A3
A3
A3
A3
A3
A3
A3
A3
A2
A2
A2
A2
A2#
A2#
A2#
A2#
A1
A1
A1#
A1#
A1
A1
A1#
A1#
A0
A0#
A0
A0#
A0
A0#
A0
A0#
8 words
4 words
Burst Length
13
Rev 1.6 Feb. 2007
ETRON [ ETRON TECHNOLOGY, INC. ]
