S25FL064A0LMFI001 Spansion Inc., S25FL064A0LMFI001 Datasheet - Page 19

• Manufacturer Part Number: S25FL064A0LMFI001
• Manufacturer: Spansion Inc.

Specifications of S25FL064A0LMFI001

• Cell Type: NOR
• Density: 64Mb
• Access Time (max): 9ns
• Interface Type: Serial (SPI)
• Boot Type: Not Required
• Address Bus: 1b
• Operating Supply Voltage (typ): 3/3.3V
• Operating Temp Range: -40C to 85C
• Package Type: SOIC W
• Program/erase Volt (typ): 2.7 to 3.6V
• Sync/async: Synchronous
• Operating Temperature Classification: Industrial
• Operating Supply Voltage (min): 2.7V
• Operating Supply Voltage (max): 3.6V
• Word Size: 8b
• Number Of Words: 8M
• Supply Current: 13mA
• Mounting: Surface Mount
• Pin Count: 16
• Lead Free Status / RoHS Status: Compliant

9.6
20
Read Status Register (RDSR)
The Read Status Register (RDSR) command outputs the state of the Status Register bits.
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.
sequence, which also shows that it is possible to read the Status Register continuously until CS# is driven
high.
SCK
SO
CS#
SI
Bit
7
6
5
4
3
2
1
0
Mode 3
Mode 0
Hi-Z
Status Register Bit
SRWD
WEL
BP2
BP1
BP0
WIP
0
—
—
1
Figure 9.6 Read Status Register (RDSR) Command Sequence
Command
2
3
4
Status Register Write Disable
5
Write Enable Latch
Write in Progress
Table 9.2 S25FL064A Status Register
Bit Function
Block Protect
6
7
MSB
S25FL064A
—
—
7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 7
8
D a t a
Status Register Out
9
10
11
S h e e t
12
1 = Protects when W# is low
0 = No protection, even when W# is low
Not used
Not used
000–111 = Protects upper half of address range in 5 sizes. See
Table 7.1 on page
1 = Device accepts Write Status Register, program, or erase
commands
0 = Ignores Write Status Register, program, or erase commands
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.
13
14
Figure 9.6
15
MSB
13.
S25FL064A_00_C4 February 27, 2009
shows the RDSR command
Status Register Out
Description
Table 9.2
shows