IS25CQ032-JKLE-TR ISSI, IS25CQ032-JKLE-TR Datasheet - Page 36

• 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

DEVICE OPERATION (CONTINUED)
To lock the OTP memory:
Bit 0 of the OTP control byte, that is byte 64, is used to permanently lock the OTP memory array.
cannot be programmed anymore.
Once a bit of the OTP memory has been programmed to ‘0’, it can no longer be set to ‘1’.
Therefore, as soon as bit 0 of byte 64 (control byte) is set to ‘0’, the 64 bytes of the OTP
memory array become read-only in a permanent way.
Any program OTP (POTP) instruction issued while an erase, program or write cycle is in
progress is rejected without having any effect on the cycle that is in progress
Integrated Silicon Solution, Inc.- www.issi.com
Rev. A
2/1/2013
When bit 0 of byte 64 = ’1’, the 64 bytes of the OTP memory array can be programmed.
When bit 0 of byte 64 = ‘0’, the 64 bytes of the OTP memory array are read-only and
Byte1 Byte2
X
X
Bit 1~bit 7 do not care
X
X
X
X
Byte64
X
OTP control byte
Bit 0
When bit 0 = 0
the 64 OTP bytes
become read only
Byte65
IS25CQ032
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