
CONFIDENTIAL [AK8999A/AW/AD]
MS1600-E-00 2014/05
- 45 -
4) Serial Interface Timing Diagram
4.1) Timing chart1
4.2) Timing chart2
4.3) Timing chart3
[EEPROM WRITE Mode]
A4 A3 A2 A1 A0 D7 D0
1 4 169
Twr_EEP
A4 A3
A2
A1
A0
CSCLK
1 169
[EEPROM READ Mode]
D7 D0
Hi-Z Hi-Z
I2 I1
I0
I2
I1
I0
I2
1
1 4
A4 A3
I2 I1
I0
A2
A4 A3
A2
A1
A0
CSCLK
1 169
[Register READ Mode]
D7 D0
Hi-Z Hi-Z
I2
I1
I0
1 4
A4 A3
I2 I1
I0
A2
[Register Write Mode1]
VREF, IREF, VTMP, Pressure Threshold Level, Pressure Threshold Hysteresis Level, Level shift Adjustment set
A4 A3 A2 A1 A0 D7 D0
1 4 169
Twr_REG
I2 I1
I0
Hi-z
VREF, IREF, VTMP,
Pressure Threshold Level,
Pressure Threshold
Level shift
CSCLK High Time
I2
1
[Register Write Mode2]
OSC Adjustment set
A4 A3 A2 A1 A0 D7
D0
1 4 169
Twr_REG
I2 I1
I0
Tcount
I2
1
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