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參數(shù)資料
| 型號： | DS2720CU/T&R |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| 封裝： | MICRO, SOP-8 |
| 文件頁數(shù)： | 7/21頁 |
| 文件大?。?/td> | 264K |
| 代理商： | DS2720CU/T&R |
DS2720
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EEPROM addresses are ignored. Reads and writes to non-EEPROM addresses can still occur while the
copy is in progress. The copy data command takes tEEC time to execute, starting on the next falling edge
after the address is transmitted. The copy data command is ignored by the DS2720 while in the sleep
mode.
Recall Data [B8h, XX].
This command recalls the contents of the 4-byte EEPROM block containing
address XX to shadow RAM.
Lock [6Ah, XX].
This command locks (write-protects) the 4-byte block of EEPROM memory containing
memory address XX. The LOCK bit in the EEPROM register must be set to l before the lock command is
executed. To help prevent unintentional locks, one must issue the lock command immediately after
setting the LOCK bit (EEPROM register, address 07h, bit 06) to a 1. If the LOCK bit is 0 or if setting the
lock bit to 1 does not immediately precede the lock command, the lock command has no effect. The lock
command is permanent; a locked block can never be written again. The lock command is ignored by the
DS2720 while in the sleep mode.
Table 5. FUNCTION COMMANDS
COMMAND
DESCRIPTION
COMMAND
PROTOCOL
BUS STATE
AFTER
COMMAND
PROTOCOL
BUS DATA
Read Data
Reads data from
memory starting at
address XX
69h, XX
Master Rx
Up to 256 bytes
of data
Write Data
Writes data to memory
starting at address XX
6Ch, XX
Master Tx
Up to 256 bytes
of data
Copy Data
Copies shadow RAM
data to EEPROM block
containing address XX
48h, XX
Master Reset
None
Recall Data
Recalls EEPROM
block containing
address XX to RAM
B8h, XX
Master Reset
None
Lock
Permanently locks the
block of EEPROM
containing address XX
6Ch, 07h, 4Xh
6Ah, XX
Master Reset
None
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