S25FL128K View Datasheet(PDF) - Spansion Inc.
Part Name
Description
View to exact match
S25FL128K Datasheet PDF : 59 Pages
| |||
Data Sheet (Preliminary)
Figure 6.14 Fast Read Quad I/O Instruction Sequence (Initial instruction or previous M5-4 10)
CS#
Mode 3
CLK Mode 0
IO0
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
Instruction (EBh)
4 040 4 04 0
IO Switches from
Input to Output
404 04
IO1
5 151 5 15 1
515 15
IO2
6 262 6 26 2
626 26
IO3
7 373 7 37 3
73 737
A23-16 A15-8 A7-0
M7-0
Dummy Dummy Byte 1 Byte 2
Figure 6.15 Fast Read Quad I/O Instruction Sequence (Previous instruction set M5-4 = 10)
CS#
Mode 3
CLK
Mode 0
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
IO0
4040 4040
IO Switches from Input to Output
40 4 0 4
IO1
5151 5151
51 5 1 5
IO2
62 626 262
6 2 6 26
IO3
7373 7373
73737
A23-16
A15-8
A7-0
M7-0
Dummy
Dummy
Byte 1 Byte 2
Fast Read Quad I/O with “8/16/32/64-Byte Wrap Around”
The Fast Read Quad I/O instruction can also be used to access a specific portion within a page by issuing a
“Set Burst with Wrap” command prior to EBh. The “Set Burst with Wrap” command can either enable or
disable the “Wrap Around” feature for the following EBh commands. When “Wrap Around” is enabled, the
data being accessed can be limited to either a 8, 16, 32 or 64-byte section of a 256-byte page. The output
data starts at the initial address specified in the instruction, once it reaches the ending boundary of the 8/16/
32/64-byte section, the output will wrap around to the beginning boundary automatically until CS# is pulled
high to terminate the command.
The Burst with Wrap feature allows applications that use cache to quickly fetch a critical address and then fill
the cache afterwards within a fixed length (8/16/32/64-byte) of data without issuing multiple read commands.
The “Set Burst with Wrap” instruction allows three “Wrap Bits”, W6-4 to be set. The W4 bit is used to enable
or disable the “Wrap Around” operation while W6-5 are used to specify the length of the wrap around section
within a page. See Section 6.2.14, Set Burst with Wrap (77h) on page 32.
28
S25FL128K
S25FL128K_00_02 April 1, 2011
|
|
Share Link: 