EtronTech
EM63A165
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.
A2
0
A1
0
A0
0
Burst Length
1
0
0
1
2
0
1
0
4
0
1
1
8
1
0
0
Reserved
Reserved
Reserved
Full Page
1
0
1
1
1
0
1
1
1
Full Page Length : 512
Burst Type Field (A3)
•
The Burst Type can be one of two modes, Interleave Mode or Sequential Mode.
A3
0
Burst Type
Sequential
Interleave
1
--- 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
0
n
1
2
3
4
5
6
7
-
-
255 256 257
-
-
n+1 n+2 n+3 n+4 n+5 n+6 n+7
n+255
n
n+1
Column Address
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
Column Address
Burst Length
Data 0 A8
A0
A7
A7
A7
A7
A7
A6
A6
A6
A6
A6
A5
A5
A5
A5
A5
A4
A4
A4
A4
A4
A3
A3
A3
A3
A3
A2
A2
A2
A2
A2#
A1
Data 1 A8
A1
4 words
A0#
Data 2 A8
A0
A1#
A1#
A1
Data 3 A8
8 words
A0#
Data 4 A8
A0
13
Rev 1.1 Apr. 2007
ETRON [ ETRON TECHNOLOGY, INC. ]
