AS3931 View Datasheet(PDF) - austriamicrosystems AG
Part Name
Description
Manufacturer
AS3931 Datasheet PDF : 31 Pages
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AS3931
Datasheet - Pin Assignments
4 Pin Assignments
Figure 2. Pin Assignments 16-pin TSSOP Package
VCC
1
LF1N
2
16
VREG
15
RSSI
LF1P
3
LF2N
4
AS3931
14
SDA
13
SCL
LF2P
5
12
CS
LF3N
6
11
WAKE
LF3P
7
GND
8
till 4.1 Pin Descriptions
G s Table 1. Pin Descriptions
A t Pin Name
VCC
s n LF1N
e LF1P
m t LF2N
LF2P
a n LF3N
LF3P
o GND
XIN
c XOUT
l WAKE
Pin
Number
1
2
3
4
5
6
7
8
9
10
11
CS
12
a SCL
13
ic SDA
14
n RSSI
15
Tech VREG
16
Pin
Type
Supply Input
Analog Input
Analog Input
Analog Input
Analog Input
Analog Input
Analog Input
Ground
Analog Input
Analog Output
Open Drain
Digital Input with
Pulldown
Digital Input with
Pulldown
Digital Input with
Pulldown
Analog/Digital
output
Analog Output
10
XOUT
9
XIN
Description
Positive Supply Voltage
Channel 1 negative input
Channel 1 positive input
Channel 2 negative input
Channel 2 positive input
Channel 3 negative input
Channel 3 positive input
Negative Supply Voltage
Crystal Oscillator Pin 1
Crystal Oscillator Pin 2
Wake Up Detect output/Reset output
Chip Select
Serial Clock
Serial Data
Received Signal Strength Indicator signal/
Digital Test mode signal output
Regulator Output Voltage
valid
www.austriamicrosystems.com/AS3931
Revision 6.2
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