S71WS512N Datasheet, PDF (6/18 Pages) SPANSION – Migrating from the S71WS512N to the S71WS512P

Application Note
Table 4.3 Configuration Register Access Command Comparison
Command
Set Configuration Register
S29WS256N
Read Configuration Register
Set Configuration Register
S29WS512P
Read Configuration Register
First
Cycles Addr Data
4
555 AA
4
555 AA
5
555 AA
4
555 AA
Second
Addr Data
2AA 55
2AA 55
2AA 55
2AA 55
Bus Cycles
Third
Fourth
Addr Data Addr
Data
555 D0
X00
CR
555 C6
X00
CR
555 D0
X00
CR0
555 C6 X0 or X1 CR0 or CR1
Fifth
Sixth
Addr Data Addr Data
X01 CR1
Figure 4.2 shows an example of how to set the configuration register for 80 MHz 8-Burst with Wrap Read (7-
Wait), RDY Active-H 1 cycle prior.
Figure 4.2 Example Configuration Register Settings
Cycle Operation
6:61
Byte
Address
Word
Address
Data
Cycle Operation
6:63
Byte
Address
Word
Address
Data

:ULWH %$$$$K %$K $$K

:ULWH %$$$$K %$K $$K

:ULWH %$K %$$$K K

:ULWH %$K %$$$K K

:ULWH %$$$$K %$K 'K

:ULWH %$$$$K %$K 'K

:ULWH %$
%$K &5 )&$K 
:ULWH %$
%$K &5 )&$K

:ULWH %$  K %$  K &5 ))((K
&5 %LW
&5
&5
&5
&5
&5
&5
&5
&5
&5
&5
&5
&5
&5
&5
&5
&5 
9DOXH
















+H[ 9DOXH

)
&
$
&5 %LW
&5
&5
&5
&5
&5
&5
&5
&5
&5
&5
&5
&5
&5
&5
&5
&5 
9DOXH
















+H[ 9DOXH

)
&
$
&5 %LW
&5
&5
&5
&5
&5
&5
&5
&5
&5
&5
&5
&5
&5
&5
&5
&5 
9DOXH
















+H[ 9DOXH
)
)
(
(
4.5 Page Mode Read
Both devices are capable of page mode reads, which provides random read access speed for locations within
a page. Table 4.4 shows the page size comparison differences between the S71WS512N and the
S71WS512P.
6
S71WS512N to S71WS512P
2xWS-N_to_WS-P_AN_01E October 3, 2006