79LV0832RPQE-20 MAXWELL [Maxwell Technologies], 79LV0832RPQE-20 Datasheet - Page 15

• Manufacturer Part Number: 79LV0832RPQE-20
• Description: 8 Megabit (256K x 32-Bit) Low Voltage EEPROM MCM
• Manufacturer: MAXWELL [Maxwell Technologies]

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3. Software Data Protection Enable
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4. Writing to the Memory with Software Data Protection Enabled
Low Voltage 8 Megabit (256K x 32-Bit) EEPROM MCM
The 79LV0832 contains a software controlled write protection feature that allows the user to inhibit all write operations to the
device. This is useful in protecting the device from unwanted write cycles due to uncontrollable circuit noise or inadvertent
writes caused by minor bus contentions. Software data protection is enabled by writing the following data sequence to the
EEPROM and allowing the write cycle period (t
To write to the device once Software protection is enabled, the enable sequence must precede the data to be written. This
sequence allows the write to occur while at the same time keeping the software protection enabled
Sequence for Writing Data with Software Protection Enabled
Software Data Protection Enable Sequence
AAAA or 2AAA
AAAA or 2AAA
Write Address(s)
Address
Address
5555
5555
5555
5555
WC
) of 10ms to elapse:
01.10.05 Rev 8
Normal Data Input
AA AA AA AA
AA AA AA AA
15mS
A0 A0 A0 A0
A0 A0 A0 A0
55 55 55 55
55 55 55 55
All data sheets are subject to change without notice
Data
Data
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79LV0832
©2005 Maxwell Technologies
All rights reserved
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