IS25CQ032-JKLE-TR ISSI, IS25CQ032-JKLE-TR Datasheet - Page 50

• Manufacturer Part Number: IS25CQ032-JKLE-TR
• Description: Flash 32M, 2.7-3.6V 104Mhz Serial Flash
• Manufacturer: ISSI

Specifications of IS25CQ032-JKLE-TR

• Rohs: yes
• Data Bus Width: 8 bit
• Memory Type: Flash
• Memory Size: 32 Mbit
• Architecture: Uniform
• Timing Type: Synchronous
• Interface Type: SPI
• Supply Voltage - Max: 3.6 V
• Supply Voltage - Min: 2.7 V
• Maximum Operating Current: 15 mA
• Operating Temperature: - 40 C to + 105 C
• Mounting Style: SMD/SMT
• Package / Case: WSON-8
• Organization: 4096 K x 8

Instruction Name
SECT_UNLOCK
SECT_LOCK
Appendix1: Sector Unlock function
SEC_UNLOCK COMMAND OPERATION
The Sector unlock command allows the user to
select a specific sector to allow program and erase
operations. This instruction is effective when the
blocks are designated as write-protected through
the BP0, BP1, BP2 and BP3 bits in the status
register. Only one sector can be enabled at any
time. To enable a different sector, a previously
Figure d. Sector Unlock Sequence
Note: 1.If the clock number will not match 8 clocks(command)+ 24 clocks (address), it will be ignored.
Integrated Silicon Solution, Inc.- www.issi.com
Rev. A
2/1/2013
SCK
CS
2.It must be executed write enable (06h) before sector unlock instructions.
SI
In the sector unlock procedure, [A11:A0] needs equal to “0”, unlock procedure is
completed, otherwise chip will regard it as illegal command.
Sector unlock
1
2
06h
7 8
Code
Hex
26h
24h
Operation
Sector unlock
Sector lock
1
2
26h
7 8 9
A23-A16
10
15 16 17 18
enabled sector must be disabled by executing a
Sector Lock command. The instruction code is
followed by a 24-bit address specifying the target
sector, but A0 through A11 are not decoded. The
remaining sectors within the same block remain in
read-only mode.
A15-A8
23 24 25 26
A7-A0
IS25CQ032
Command
Cycle
4 Bytes
1 Byte
31 32
Maximum
Frequency
100 MHz
100 MHz
50