DS2788K Maxim Integrated, DS2788K Datasheet - Page 27

• Manufacturer Part Number: DS2788K
• Description: Power Management IC Development Tools
• Manufacturer: Maxim Integrated
• Series: DS2788r

Copy Data [48h, XX]. This command copies the con-
tents of the EEPROM shadow RAM to EEPROM cells for
the EEPROM block containing address XX. Copy data
commands that address locked blocks are ignored.
While the copy data command is executing, the EEC bit
in the EEPROM register is set to 1 and writes to
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 t
to execute, starting on the next falling edge after the
address is transmitted.
Recall Data [B8h, XX]. This command recalls the con-
tents of the EEPROM cells to the EEPROM shadow
memory for the EEPROM block containing address XX.
Table 5. Function Commands
Recall Data
COMMAND
Read Data
Copy Data
Write Data
Lock
Reads data from memory starting at address XX.
Writes data to memory starting at address XX.
Copies shadow RAM data to EEPROM block containing
address XX.
Recalls EEPROM block containing address XX to RAM.
Permanently locks the block of EEPROM
containing address XX.
______________________________________________________________________________________
DESCRIPTION
Stand-Alone Fuel-Gauge IC with
EEC
time
Lock [6Ah, XX]. This command locks (write protects)
the block of EEPROM memory containing memory
address XX. The lock bit in the EEPROM register must
be set to 1 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 1Fh, bit 06) to a 1. If the
lock bit is 0 or if setting the lock bit to 1 does not imme-
diately precede the lock command, the lock command
has no effect. The lock command is permanent; a
locked block can never be written again.
LED Display Drivers
PROTOCOL
COMMAND
6Ch, XX
B8h, XX
6Ah, XX
69h, XX
48h, XX
BUS STATE AFTER
Master Reset
Master Reset
Master Reset
PROTOCOL
COMMAND
Master Rx
Master Tx
bytes of data
bytes of data
BUS DATA
Up to 256
Up to 256
None
None
None
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