AK8998 Datasheet, PDF (10/59 Pages) Asahi Kasei Microsystems – Preliminary

[AK8998/W/D]
Pin Assignments and Functions
PAD Name I/O C load max. R load min. Type
Comments
1 VSS
GND
2 VO
I
Analog
Resistive load connection prohibited
ESCF[1:0]: Open when 1,2,3h
O
50pF
9.5kΩ
Analog
Resistance load is connectable with
VDD or VSS
3 VOUT _I/O
100pF
CMOS
Pull-down resistor (100kΩ) included
when SDI/O mode
O
300pF
Analog Adjustment mode
4 VDD
Power
EAGND[0]: Resistive load connection
5 AGND O
Analog
prohibited when 1h
EAGND[0]: Open when 0h
6,7,8 N.C.
Do not connect
9 CSCLK I
CMOS Pull-down resistor (100kΩ) included
10 DET1 O
CMOS
11
DET2
/PTH
O
I
CMOS
Analog EPTH1[0]=1h
12 N.C.
Do not connect
13 VN
I
Analog
14 VS
O
O
30pF
30pF
1kΩ
0.82kΩ
Analog EVD[1:0]=0h
Analog EVD[1:0]=1, 2, 3h
15 VP
I
Analog
16 EXTMP I
Analog Do not connect when not in use
Pin Descriptions
PAD Name
Functions
Start up
Note)
1 VSS Negative voltage supply pin
-
2
VO
Capacitance connection pin
for sensor signal band-limiting
Hi-Z
3
VOUT
Sensor signal / Data I/O / Calibration
interface pin
Hi-Z
4 VDD Positive supply voltage pin
-
5
AGND
Analog ground with external
capacitance for stabilization
0.5*VDD
/Hi-z
6,7,8 N.C.
-
9 CSCLK Chip select / Serial clock pin
-
10 DET1 Output pin for pressure detection 1 VDD/VSS
11
DET2
/PTH
Output pin for pressure detection 2
/ Pressure detection circuit 1 threshold VDD/VSS
external input
12 N.C.
-
13 VN Sensor differential signal input pin (-)
-
14
VS
Constant voltage supply pin
for sensor drive
Hi-z
15 VP Sensor differential signal input pin (+)
-
16
EXTMP
External temperature sensor voltage
input pin
Hi-z
Note) In the case of EAGND[0]=”H”/”L” and EINV1/2[0]=“H”/“L”
Pin conditions
EAGND[0] EINV1/2[0] EINE1/2[0]
: “H” / “L” : “H” / “L” : ”H”
-
-
-
-
Normal
operation
-
-
Normal
operation
-
-
-
-
0.5*VDD
/Hi-z
Normal
operation
-
-
-
-
-
-
-
-
VSS/VDD
VSS
-
VSS/VDD
VSS
-
-
-
-
-
-
-
Normal
operation
-
-
-
-
-
-
-
MSxxxxx-E-00
- 10 -
2012/11