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GPS Receiver Board
3.2 Pin Definition
PIN
NAME
1
GPIO(4)
2
NC (MODE)
3
NMEA Tx
4
NMEA Rx
5
NC (WAKE UP)
6
Reset
7
VBAT
8
GND
9
VCC
10
GPIO(0)
A1
RF GND
A2
RF IN
A3
RF GND
D1
DSUMUX
D2
DSUEN
D3
DSUBRE
D4
DSUTX
D5
DSURX
D6
DSUACT
3.3 Operating Modes
3.3.1 GPIO(1) & (4)
It design as spare I\O. You may leave it disconnect of desire.
3.3.2 Reset:
It always requires reset when power-up. Max voltage is 2.0VDC
And will not effect cold start or hot start.
3.3.3 Debug Pins
All pins from D1 to D6 is for development purposes, not for end users except downloading new
software.
3.3.4 Developing Kit
Available at part no. GPS-24-SDK
3.4 Other Electrical Specification
Table 3-1 Absolute Maximum Ratings
Parameter
Power Supply Voltage
Input Pin Voltage
Output Pin Voltage
Reset Pin Voltage
Storage Temperature
Back-up Voltage
Table 3-2 Operating Conditions
Parameter
Power Supply Voltage
Input Pin Voltage
Operating Temperature
Operating Current ZX4120
Rikaline
International Corp.
Tel: ++886 2 2370 4688 Fax: ++886 2 2370 4686 E-Mail:
GPS-24 / 24A Operating Manual
TYPE
DESCRIPTION
I \ O
GPS Status
NU
Reserved, keep float
I \ O
NMEA Serial Data Output
I \ O
NMEA Serial Data Input
NU
Reserved, keep float
I
Low Active, keep float if not use *1
I
Backup Battery Input (1.2~2V)
PWR
Ground
PWR
+3.0~3.6V DC Power Input
I \ O
SW dependent functions
ANT
Antenna ground
ANT
Antenna +
ANT
Antenna ground
I
Serial / DSU select
I
DSU enable
I
DSU break enable
O
DSU transmitter
I
DSU receiver
O
DSU active
Symbol
VDD
VIN
VOUT
Vreset
TSTG
BAT
Symbol
VCC
VIN
TOPR
ICC
Specifications subject to change without prior notice
10F, 64, Kang-Din Road, Taipei 108, Taiwan
Will not effect hot, or cold start
Min
-0.3
-0.3
-0.3
-0.3
-40
Min
Typ
3
3.3
2.7
3
-40
27
info@rikaline.com.tw
Web: www.rikaline.com.tw
Rikaline
Remarks
Max
Units
3.6
V
3.3
V
3
V
2.0
V
100
°C
2.2
V
Max
Units
3.6
V
3.3
V
85
°C
mA
6
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