AK8999AD Datasheet, PDF (45/68 Pages) Asahi Kasei Microsystems – Pressure Sensor Control IC

CONFIDENTIAL
[AK8999A/AW/AD]
4) Serial Interface Timing Diagram
4.1) Timing chart1
[EEPROM WRITE Mode]
Twr_EEP
1
4
9
16
1
CSCLK
VOUT
Analog
Output
I2 I1 I0 A4 A3 A2 A1 A0 D7
D0
I2
[EEPROM READ Mode]
1
9
CSCLK
VOUT
Analog
Output
Hi-Z
I2 I1 I0 A4 A3 ^A2 A1 ^A0 D7
16
1
4
Hi-Z
D0 I2 I1 I0 A4 A3 A2
[Register READ Mode]
1
9
CSCLK
VOUT
Digital
I/O
Hi-Z
I2 I1 I0 A4 A3 ^A2 A1 ^A0 D7
16
1
4
Hi-Z
D0 I2 I1 I0 A4 A3 A2
4.2) Timing chart2
[Register Write Mode1]
VREF, IREF, VTMP, Pressure Threshold Level, Pressure Threshold Hysteresis Level, Level shift Adjustment set
Twr_REG CSCLK High Time
CSCLK
VOUT
Analog
Output
1
4
9
I2 I1 I0 A4 A3 A2 A1 A0 D7
4.3) Timing chart3
[Register Write Mode2]
OSC Adjustment set
16
1
Hi-z
D0
Voltage Monitor (note) I2
(note)
VREF, IREF, VTMP,
Pressure Threshold Level,
Pressure Threshold Hysteresis Level
Level shift
Twr_REG
Tcount
1
4
9
16
1
CSCLK
VOUT
Analog
Output
I2 I1 I0 A4 A3 A2 A1 A0 D7
D0
I2
MS1600-E-00
- 45 -
2014/05