GLOBALSAT GPS Module
Hardware Data Sheet
Product No : MT-512C
User Manual Version 1.1
Globalsat Technology Corporation
16F., No.
186, Jian-Yi Road, Chung-Ho City, Taipei
Hsien 235, Taiwan
Tel: 886-2-8226-3799 Fax: 886-2-8226-3899
E-mail : service@globalsat.com.tw
Issue Date
APPR
CHECK
PREPARE
2013/10/25
Ray
Mason
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MT-512C
High Performance GPS Module
Product Description
Product Description
MT-512C GPS module features high sensitivity, low power and ultra small form factor. This GPS
module is powered by MTK GPS solution; it can provide you with superior sensitivity and
performance even in urban canyon and dense foliage environment. MT-512C supports up to 210
PRN channels. With 66 search channels and 22 simultaneous tracking channels, MT-512C
acquires and tracks satellites in the shortest time even at indoor signal levels. Through MT-512C’s
excellent low-power consumption characteristic, while using power sensitive devices, especially
portable applications. MT-512C is suitable for the following applications:
Automotive navigation
Fleet management
Marine navigation
Product Features
MediaTek high performance GPS Chipset
Very high sensitivity (Chip Tracking Sensitivity: -165 dBm)
Extremely fast TTFF (Time To First Fix) at low signal level
Support UART interface, baud rate 4800/9600/38400/115200 fixed on internal setting.
Built-in LNA
Built-in GPS Antenna
Compact size (12.6mm x 12.0 mm x 7.6mm) suitable for space-sensitive application
One size component, easy to mount on another PCB board.
Support NMEA0183 V4.0(GGA,GSA,GSV,RMC)
Support SBAS (WASS, EGNOS, MSAS, GAGAN), QZSS
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MT-512C
High Performance GPS Module
Product Pin Description
PIN Number(s)
Name
Type
Description
Note
This is the power input for the RTC and
1
VBAT
P
navigation data retention. This pin builds in a
back up battery.
This is the main power supply to the GPS
2
VCC
P
module.
3
GND
P
Ground.
This is the main transmits channel for
outputting navigation and measurement
4
TXD
O
data to user’s navigation software or user
written software.(Baud rate default 9600)
This is the main receive channel for
receiving software commands to the GPS
5
RXD
I
module from user written software.
(Baud rate default 9600)
6
TIMEMARK
O
One pulse per second output.(1PPS)
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MT-512C
High Performance GPS Module
Electrical Specification
Absolute Maximums Ratings
Parameter
Min.
Typ.
Max.
Conditions
Unit
POWER Supply
Main power supply(VCC)
3.3
V
VBAT
3.3
V
VCC power consumption
23
24
30
VCC 3.3V
mA
VBAT power consumption
6.7
6.9
7.2
VBAT 3.3V
uA
RF
Operating Frequency
1.575
Ghz
DC Electrical characteristics
Parameter
Symbol
Min.
Typ.
Max.
Conditions
Units
I/O Low Level Output Voltage
VOL
0.42
V
I/O High Level Output Voltage
VOH
2.38
V
I/O Low Level Input Voltage
VI L
-0.3
0.7
V
I/O High Level Input Voltage
VI H
2.1
3.1
V
TXD Output Voltage
VTO
2.52
2.8
3.08
V
RXD Input Voltage
VRI
3.6
V
High Level Output Current
IOH
2
mA
Low Level Output Current
IOL
2
mA
Environmental Characteristics
Parameter
Min
Typ
Max
Unit
Humidity Range
5
95
% non-condensing
Operation Temperature
-40
25
85
℃
Storage Temperature
-40
85
℃
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MT-512C
High Performance GPS Module
Receiver Performance
Chipset Tracking :
-165dBm
Sensitivity
Chipset Autonomous acquisition :
-148 dBm
Cold Start - Autonomous
< 35s
Time-To-First-Fix
Warm Start - Autonomous
< 35s
Hot Start - Autonomous
< 1s
Autonomous
< 3m (2D RMS)
Horizontal Position Accuracy
SBAS
<2.0m
Speed
< 0.01 m/s
Velocity Accuracy
Heading
< 0.01 degrees
Reacquisition
0.1 second, average
NMEA Update Rate
1 Hz(GGA,GSA,GSV,RMC)
Maximum Altitude
< 18,000 meter
Maximum Velocity
< 515 meter/ second
Maximum Acceleration
< 4G
<NOTE>
MT-512C’s sensitivity depended different mechanical design.
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MT-512C
High Performance GPS Module
Physical Characteristic
Type
6-pin GPS Module with 10x10x4(mm) Antenna
Dimensions
12.6 mm * 12.0 mm * 7.6 mm ±0.2mm
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MT-512C
High Performance GPS Module
Application
Application circuit
Recommended Layout PAD
Unit: mm
Tolerance: 0.1mm
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MT-512C
High Performance GPS Module
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MT-512C
High Performance GPS Module
Reversion history
Reversion
Date
Name
Status / Comments
V1.0
20120807
Mason
Initial Version
V1.1
20131025
Mason
Fixed antenna thickness to 4mm
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