AK8999AW Datasheet, PDF (25/68 Pages) Asahi Kasei Microsystems – Pressure Sensor Control IC

CONFIDENTIAL
[AK8999A/AW/AD]
■ Description of Operation Timing Status (pressure detection circuit effective)
State No.
CLK
Operations
Start Up 00
It is the time until analog circuits operate stably.
Analog reference circuits as VREF, IREF, etc. start up and
adjusted output reference voltage (VSS or VDD or
0.5*VDD) is output from the VOUT pin.
PU0
01 CLK = 30
02 CLK = 0 or 5
Clock count start
Analog circuits startup
Ta = 25C detected comparator operation Note1)
STV
20 CLK = 30
STV circuits operation
MSR
30 CLK = 30
Result of pressure correction is output from VOUT pin.
Idel
40 CLK = 0 or 505
Idling
With Fs = 8.33kHz, no idling and in continuous operation.
Idling period
Fs = 0.83kHz 505 CLK
Fs = 8.33kHz 0 CLK
PU1
11 CLK = 0 or 30
Clock count start
Analog circuits startup Note2)
12 CLK = 0 or 5
Ta = 25C detected comparator operation Note1)
：
：
：
Note1) Only operation in the quasi 2nd order correction mode by piecewise linear approximation
Note2) Only operation in the Fs = 0.83kHz mode
MS1600-E-00
- 25 -
2014/05