AK9753 Datasheet, PDF (28/50 Pages) Asahi Kasei Microsystems – IR Sensor IC with I2C I/F

12.1.7. EEPROM Write Timing
Writing data to EEPROM should be done at shown timing as the following.
[AK9753]
SCL
SDA
8th bit
WORD n
R/W= “0”
ACK
STOP
START
tWR ≥ 10ms
R/W= “0”
SDA
S
Slave
Address
EMODE
Register
Address
DATA
P
S
Slave
Address
EKEY
Register
Address
Data P
R/W= “0”
S
Slave
Address
EEPROM
Address
DATA
tWR ≥
10ms
P
S
Figure 12.10. EEPROM Write Timing
Writing data to EEPROM should be done as the sequence that is shown in Figure 12.10.
Writing data to EEPROM can be done after setting EMODE [2:0] = “001”, EEPMODE = “1” and
EKEY [7:0] = “A5H”.
Writing data to EEPROM is started at the Stop Condition after inputting the data, and terminated at the
Start Condition. EEPROM write time (tWR) should be longer than 10ms.
Two or more bytes cannot be written at once in writing data to EEPROM should be done after setting
EKEY [7:0] = “A5H” again.
On the other hand, reading data from EEPROM is able to be continuously done.
017005237-E-00
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2017/04