AK8996 Datasheet, PDF (22/74 Pages) Asahi Kasei Microsystems – Pressure Sensor Interface IC

1. Normal Operation Timing (Pressure Detector Valid)
Operation Sequence
Self-Diagnosis OFF (First time) In itial operation for STV
CLK (1=512 kH z) Approx. 400 µsec
NO.
00
Sta tus
Start Up
VDD or STBYN
Press judge
STV
S /H1& 2
VOUT
DET
0
5
8
18
10 20 30
3
ST0 PJ0
STV 0
P. supply & sens.
variation adj.
1/2*VDD for outpu t ref. voltage
(First) Initial
O perati on
Self-Diagnosis OFF (2nd time & after) Normal operation for STV
CLK (1=512kHz) _{Id ling Perio d}
0
5
8
18
100 Hz: 5,070 1 kHz: 462
NO. _{2 kHz: 206 10.24 kH z:} 11
21
31
3
0
Sta tus
ST1 PJ1
STV 1
VDD or STBYN
Press judge
STV
S /H1& 2
P. Supply & sens.
variation adj.
(2nd time & after)
Normal Operation
VOUT
V O UT·(n- 1)
DET
Abnormal: “H ” (Initial judge)
Pressure measurement period
MSR
MSR
MS1055-E-02
22
[AK8996/W]
Idlin g period
100 Hz: 5,070 1 kH z: 462
50 51 ^{2 kHz: 206 10.24 kHz: 0}
13
ST3
VOUT·(1)
50 51
13
ST3
V O UT·(n)
2011/12