DS2760 Dallas Semiconducotr, DS2760 Datasheet - Page 17

• Manufacturer Part Number: DS2760
• Description: High Precision Li-Ion Battery Monitor
• Manufacturer: Dallas Semiconducotr

DS2760
FUNCTION COMMANDS
After successfully completing one of the Net Address Commands, the bus master can access the features
of the DS2760 with any of the Function Commands described in the following paragraphs. The name of
each function is followed by the 8-bit opcode for that command in square brackets.
Read Data [69h, XX]. This command reads data from the DS2760 starting at memory address XX. The
LSb of the data in address XX is available to be read immediately after the MSb of the address has been
entered. Because the address is automatically incremented after the MSb of each byte is received, the
LSb of the data at address XX+1 is available to be read immediately after the MSb of the data at address
XX. If the bus master continues to read beyond address FFh, the DS2760 outputs logic 1 until a Reset
Pulse occurs. Addresses labeled “Reserved” in the Memory Map contain undefined data. The Read Data
command may be terminated by the bus master with a Reset Pulse at any bit boundary.
Write Data [6Ch, XX]. This command writes data to the DS2760 starting at memory address XX. The
LSb of the data to be stored at address XX can be written immediately after the MSb of address has been
entered. Because the address is automatically incremented after the MSb of each byte is written, the LSb
to be stored at address XX+1 can be written immediately after the MSb to be stored at address XX. If the
bus master continues to write beyond address FFh, the DS2760 ignores the data. Writes to read-only
addresses, reserved addresses and locked EEPROM blocks are ignored. Incomplete bytes are not written.
Writes to unlocked EEPROM blocks are to shadow RAM rather than EEPROM. See the Memory section
for more details.
Copy Data [48h, XX]. This command copies the contents of shadow RAM to EEPROM for the 16-byte
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
time to execute, starting on the next falling
EEC
edge after the address is transmitted.
Recall Data [B8h, XX]. This command recalls the contents of the 16-byte EEPROM block containing
address XX to shadow RAM.
Lock [6Ah, XX].
This command locks (write-protects) the 16-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. If the LOCK bit is 0, the Lock command has no effect. The Lock command
is permanent; a locked block can never be written again.
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