Datasheet

DS1089L
WRITE EE Command
The WRITE EE command is useful in closed-loop appli-
cations where the registers are frequently written. In
applications where the register contents are frequently
written, the WC bit should be set to 1 to prevent wear-
ing out the EEPROM. Regardless of the value of the WC
bit, the value of the ADDR register is always written
immediately to EEPROM. When the WRITE EE com-
mand has been received, the contents of the registers
are written into the EEPROM, thus locking in the regis-
ter settings.
3.3V Center Spread-Spectrum EconOscillator™
10 ____________________________________________________________________
STOP
CONDITION
OR REPEATED
START
CONDITION
REPEATED IF MORE BYTES
ARE TRANSFERRED
ACK
START
CONDITION
ACK
ACKNOWLEDGEMENT
SIGNAL FROM RECEIVER
ACKNOWLEDGEMENT
SIGNAL FROM RECEIVER
SLAVE ADDRESS
MSB
SCL
SDA
R/W
DIRECTION
BIT
12 678 9 12 893–7
Figure 3. I
2
C Data Transfer Protocol
1
0
1
1
R/W
A0
A1
A2
MSB
LSB
DEVICE
IDENTIFIER
DEVICE
ADDRESS
READ/WRITE BIT
Figure 4. Slave Address Byte
I
2
C Serial Port Operation