AK8999A Datasheet, PDF (11/68 Pages) Asahi Kasei Microsystems – Pressure Sensor Control IC

CONFIDENTIAL
[AK8999A/AW/AD]
7. Pin conditions
PAD Name I/O C load max. R load min. Type
Description
1 VSS
GND
2 VO
I
Resistive load connection prohibited
Analog
ESCF[1:0]: Open when 1,2,3h
O
50pF
9.5k
Resistance load is connectable with
Analog
VDD or VSS
3 VOUT _I/O
100pF
Pull-down resistor (100kΩ) included
CMOS
when SDI/O mode
O
300pF
1M typ. Analog Adjustment mode
4 VDD
Power
5-8 N.C.
Do not connect
9 CSCLK I
CMOS Pull-down resistor (100kΩ) included
10 DET1 O
CMOS
DET2 O
11
/PTH I
CMOS
Analog EPTH1[0] = 1h
12 N.C.
Do not connect
13 VN
I
Analog
O
14 VS
O
30pF
30pF
1k
0.82k
Analog
Analog
EVD[1:0] = 3h
Pull-down resistor (200kΩ) included
EVD[1:0] = 0, 1, 2h
Pull-down resistor (200kΩ) included
15 VP
I
Analog
16 EXTMP I
400pF
Analog Do not connect when not in use
8. Pin Assignments and Functions
PAD Name
Functions
Start up
Note1)
1 VSS Negative voltage supply pin
-
Capacitance connection pin
2
VO _{for sensor signal band-limiting}
VSS/ VDD/
0.5*VDD
Sensor signal / Data I/O
3 VOUT
/ Calibration interface pin
VSS/ VDD/
0.5*VDD
4 VDD Positive supply voltage pin
-
5-8 N.C.
-
9 CSCLK Chip select / Serial clock pin
-
Output pin for pressure threshold
10 DET1
detection 1
Output pin for pressure threshold
VSS/VDD
DET2
11
detection 2 / Pressure threshold detector 1
/PTH _{threshold external input}
12 N.C.
-
13 VN Sensor differential signal input pin (-)
-
Constant voltage supply pin for sensor
14 VS
drive
VSS
15 VP Sensor differential signal input pin (+)
-
External temperature sensor voltage input
16 EXTMP
Hi-z
pin
Note1) VOUT and VO pin: In the case of EVOUT[1:0] = 0h, 1h, 2h
DET1 and DET2/PTH pin: In the case of EINV1/2[0] = 0h, 1h
Pin conditions
EINV1,2[0]
: “0h” / “1h”
-
Normal
operation
Normal
operation
-
-
-
VDD/VSS
-
-
Normal
operation
-
-
EINE1,2[0]
: “1h”
-
Normal
operation
Normal
operation
-
-
-
VSS
-
-
Normal
operation
-
-
MS1600-E-00
- 11 -
2014/05