參數(shù)資料
型號(hào)： S25FL064A0LNAI00
廠商： SPANSION LLC
元件分類(lèi)： 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(yè)數(shù)： 11/36頁(yè)
文件大?。?/td> 1495K
代理商： S25FL064A0LNAI00
20
S25FL064A
S25FL064A_00_C3 June 29, 2007
Da ta
Sh e e t
9.6
Read Status Register (RDSR)
The Read Status Register (RDSR) command outputs the state of the Status Register bits. Table 9.2 shows
the status register bits and their functions.
The RDSR command may be written at any time, even while a program, erase, or Write Status Register
operation is in progress. The host system should check the Write In Progress (WIP) bit before sending a new
command to the device if an operation is already in progress. Figure 9.6 shows the RDSR command
sequence, which also shows that it is possible to read the Status Register continuously until CS# is driven
high.
Figure 9.6 Read Status Register (RDSR) Command Sequence
Table 9.2 S25FL064A Status Register
Bit
Status Register Bit
Bit Function
Description
7
SRWD
Status Register Write Disable
1 = Protects when W# is low
0 = No protection, even when W# is low
6
—
Not used
5
—
Not used
4BP2
Block Protect
000–111 = Protects upper half of address range in 5 sizes. See
3BP1
2BP0
1
WEL
Write Enable Latch
1 = Device accepts Write Status Register, program, or erase
commands
0 = Ignores Write Status Register, program, or erase commands
0
WIP
Write in Progress
1 = Device Busy. A Write Status Register, program, or erase
operation is in progress
0 = Ready. Device is in standby mode and can accept commands.
Command
Hi-Z
MSB
Status Register Out
0
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
7 6
5 4
3
2
10 7
6
5 4
3
2
1 0 7
SO
SI
SCK
CS#
Mode 3
Mode 0
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