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參數資料
| 型號： | 79C0832XPQK-15 |
| 廠商： | MAXWELL TECHNOLOGIES |
| 元件分類： | PROM |
| 英文描述： | 8 Megabit (256K x 32-Bit) EEPROM MCM |
| 中文描述： | 256K X 32 EEPROM 5V MODULE, 150 ns, QFP96 |
| 封裝： | QFP-96 |
| 文件頁數： | 14/19頁 |
| 文件大小： | 477K |
| 代理商： | 79C0832XPQK-15 |
M
14
01.10.05 Rev 14
All data sheets are subject to change without notice
2005 Maxwell Technologies
All rights reserved
8 Megabit (256K x 32-Bit) EEPROMMCM
79C0832
5. Writing to the Memory with Software Data Protection Enabled
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
.
6. Disabling Software Protection
Software data protection mode can be disabled by inputting the following 6 bytes sequence. Once the software protection
sequence has been written, no data can be written to the memory until the write cycle (T
WC
) has elapsed.
Software Protection Disable Sequence
Devices are shipped in the “unprotected” state, meaning that the contents of the memory can be changed as
required by the user. After the software data protection is enabled, the device enters the Protect Mode
where no further write commands have any effect on the memory contents.
Address
5555
AAAA or 2AAA
5555
Data
AA AA AA AA
55 55 55 55
A0 A0 A0 A0
Normal Data Input
Write Address(s)
Address
5555
AAAA or 2AAA
5555
Data
AAAA or 2AAA
55 55 55 55
20 20 20 20
5555
AA AA AA AA
80 80 80 80
55 55 55 55
AA AA AA AA
5555
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