參數(shù)資料
型號： S25FL064A0LNAI00
廠商： SPANSION LLC
元件分類： PROM
英文描述： 64M X 1 FLASH 3V PROM, PDSO16
封裝： 0.300 INCH, PLASTIC, MS-013AA, SOP-16
文件頁數(shù)： 15/36頁
文件大小： 1495K
代理商： S25FL064A0LNAI00
June 29, 2007 S25FL064A_00_C3
S25FL064A
23
Data
She e t
9.8
Page Program (PP)
The Page Program (PP) command changes specified bytes in the memory array (from 1 to 0 only). A WREN
command is required prior to writing the PP command.
The host system must drive CS# low, and then write the PP command, three address bytes, and at least one
data byte on SI. CS# must be driven low for the entire duration of the PP sequence. The command sequence
The device programs only the last 256 data bytes sent to the device. If the number of data bytes exceeds this
limit, the bytes sent before the last 256 bytes are discarded, and the device begins programming the last 256
bytes sent at the starting address of the specified page. This may result in data being programmed into
different addresses within the same page than expected. If fewer than 256 data bytes are sent to device, they
are correctly programmed at the requested addresses.
The host system must drive CS# high after the device has latched the 8th bit of the data byte, otherwise the
device does not execute the PP command. The PP operation begins as soon as CS# is driven high. The
device internally controls the timing of the operation, which requires a period of tPP. The Status Register may
be read to check the value of the Write In Progress (WIP) bit while the PP operation is in progress. The WIP
bit is 1 during the PP operation, and is 0 when the operation is completed. The device internally resets the
Write Enable Latch to 0 before the operation completes (the exact timing is not specified).
The device does not execute a Page Program (PP) command that specifies a page that is protected by the
Block Protect bits (BP2:BP0) (see Table 7.1 on page 13).
Figure 9.8 Page Program (PP) Command Sequence
0
34
33
32
31
30
29
28
10
9
8
7
6
5
4
3
2
1
35 36 37 38
39
46
45
44
43
42
41
40
47 48 49 50
51 52 53 54
55
207
3
2072
2076
2075
2074
2079
207
8
2077
23 22 21
3
21
07
6
5
4
3
2
1
0
Data Byte 1
24-Bit Address
Command
Data Byte 2
Data Byte 3
Data Byte 256
MSB
SCK
SI
SCK
SI
7
65
4
3
2
1
0
76
54
3
21
0
7
6
5
4
3
21
0
CS#
Mode 0
Mode 3
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