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Rikaline, 2 pin definition, 3 operating modes – Rikaline GPS-24/24A User Manual

Page 6

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GPS Receiver Board

GPS-24 / 24A Operating Manual

Rikaline

Specifications subject to change without prior notice

Rikaline

International Corp.

14F, 171, ChengGong Rd, Sanchong CityTaipei 241, Taiwan

Tel: ++886 2 8973 1899 Fax: ++886 2 8973 1896 E-Mail:

[email protected]

Web: www.rikaline.com.tw

3.2 Pin Definition

PIN NAME

TYPE

DESCRIPTION

Remarks

1

GPIO(4)

I \ O

GPS Status

2

NC (MODE)

NU

Reserved, keep float

3

NMEA Tx

I \ O

NMEA Serial Data Output

4

NMEA Rx

I \ O

NMEA Serial Data Input

5

NC (WAKE UP)

NU

Reserved, keep float

6

Reset

I

Low Active, keep float if not use *1

Will not effect hot, or cold start

7

VBAT

I

Backup Battery Input (1.2~2V)

8 GND

PWR

Ground

9

VCC

PWR +3.0~3.6V DC Power Input

10

GPIO(0)

I \ O

SW dependent functions

A1

RF GND

ANT

Antenna ground

A2 RF

IN

ANT Antenna

+

A3

RF GND

ANT

Antenna ground

D1

DSUMUX

I

Serial / DSU select

D2 DSUEN

I DSU

enable

D3

DSUBRE

I

DSU break enable

D4 DSUTX

O DSU

transmitter

D5 DSURX

I DSU

receiver

D6 DSUACT

O DSU

active

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 are 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 Symbol

Min

Max

Units

Power Supply Voltage

VDD

-0.3

3.6

V

Input Pin Voltage

VIN

-0.3

3.3

V

Output Pin Voltage

VOUT

-0.3

3

V

Reset Pin Voltage

Vreset

-0.3

2.0

V

Storage Temperature

TSTG

-40

100

°C

Back-up Voltage

BAT

2.2

V

Table 3-2 Operating Conditions

Parameter Symbol

Min

Typ

Max

Units

Power Supply Voltage

VCC

3

3.3

3.6

V

Input Pin Voltage

VIN

2.7

3

3.3

V

Operating Temperature

TOPR

-40

85

°C

Operating Current ZX4120

ICC

27

mA