Holux M-90 SPECIFICATION

GPS Engine Board

M-90
SPECIFICATION

No. 1-1, Innovation Rd. I, Science-Based Industrial Park, HsinChu City 300, Taiwan R.O.C

(300) 新竹科學工業園新竹縣創新一路 1-1 號

TEL: [phone] FAX: [phone]

Website: www.holux.com

Version :1.2

All Right Reserved

M-90

GPS Module series

Version Change History

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Version

0.1 2007/04/18 Draft release

0.2 2007/05/18 Add 5. reference design

1.0 2007/06/27 Official release, modify dimension and reference design

1.1 2007/07/05 Modify current, tracking current:< 45mA

1.2 2009/07/27 Modify V_BAT power

Date Revised Reason

HOLUX Technology, Inc.
No. 1-1, Innovation Rd. I, Science-Based Industrial Park, HsinChu City 300, Taiwan R.O.C
TEL: [phone] FAX:[phone] E-mail:[e-mail] http:www.holux.com.tw

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M-90

GPS Module series

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Index

1. Introduction.............................................................................................4

1.1 General introductions.................................................................4

1.2 Key Features................................................................................4

1.3 Applications.................................................................................4

2 Technical Description.............................................................................5

2.1 Block Diagram .............................................................................5

2.2 Pin Definition ...............................................................................5

2.3 Specification................................................................................6

3. Mechanical Dimension ...........................................................................8

3.1 Mechanical Dimension................................................................8

4 Package ...................................................................................................9

4.1 Packing ........................................................................................9

4.2 Reference product photo..........................................................10

5 User Interface........................................................................................ 11

5.1 Protocol...................................................................................... 11

5.2 NMEA Protocol .......................................................................... 11

5.3 MTK NMEA Packet Format ....................................................... 12

6 Reference design.................................................................................. 13

6.1 Application circuit.....................................................................13

6.2 Reference PCB pattern ............................................................. 14

6.3 Recommendation reflow profile...............................................15

HOLUX Technology, Inc.
No. 1-1, Innovation Rd. I, Science-Based Industrial Park, HsinChu City 300, Taiwan R.O.C
TEL: [phone] FAX:[phone] E-mail:[e-mail] http:www.holux.com.tw

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M-90

GPS Module series

1.

Introduction

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1.1 General introductions

M-90 is an ultra miniature 12 * 12.2 * 2.2 mm GPS engine board

designed by low power consumption MTK GPS solution. It provides
superior sensitivity up to -159dBm and fast Time-To-First-Fix in
navigation application. The stable performance of M-90 is your best
choice to be embedded in your portable device design, like PDA、PND、
mobile phone、Digital Camera for GPS service.

1.2 Key Features

‧ Small form factor: 12 * 12.2 * 2.2 mm
‧ RoHS/WEEE compliant
‧ High sensitivity -159dBm
‧ Searching up to 32 Channel of satellites
‧ Fast Position Fix
‧ Low power consumption
‧ RTCM-in ready.
‧ Built-in WAAS/EGNOS/MSAS Demodulator.
‧ Support NMEA0183 V 3.01 data protocol.
‧ Real time navigation for location based services.
‧ For Car Navigation, Marine Navigation, Fleet Management, AVL and

Location-Based Services, Auto Pilot, Personal Navigation or touring
devices, Tracking devices/systems and Mapping devices application

1.3 Applications

‧ Automotive and Marine Navigation
‧ Automotive Navigator Tracking
‧ Emergency Locator
‧ Geographic Surveying
‧ Personal Positioning
‧ Sporting and Recreation
‧ Embedded applications:
‧ Smart phone, UMPC, PND, MP4

HOLUX Technology, Inc.
No. 1-1, Innovation Rd. I, Science-Based Industrial Park, HsinChu City 300, Taiwan R.O.C
TEL: [phone] FAX:[phone] E-mail:[e-mail] http:www.holux.com.tw

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M-90

GPS Module series

2 Technical Description

2.1 Block Diagram

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Pass ive Ant enna or Active Antenna

LNA

POWER_IN

2.2 Pin Definition

P1

NEMA_OUTPUT SETT ING_IN

SAW
Filiter

MTK
GPS CHIP

Analog

LDO

Digital

M90 Engine Board

P16

P16

UART_RXUART_TX

TCXO

RTC

GPIO

TIME_MARK

GPS Fix Ind ication

1PPS_OUTPUT

P1

P2

P3

P4

P5

P6

P7

P8

Top view Button view

Pin Pin Name Type

1

2

3

4

5

6

VDD

PPS

TXD0

RXD0

HRST

GPIO6/S0

I 3.3 ~ 5 V supply input for main power

O 1 Hz pulse 10% duty cycle when GPS has position fix

O Serial Data Output A

I Serial Data input A

I GPS reset, active low

I/O General purpose I/O,SPI data output

P15

P14

P13

P12

P11

P10

P9

P15

P14

P13

P12

P11

P10

P9

M-90 MAIN Rev: 01

2007.06.26

Function description

P2

P3

P4

P5

P6

P7

P8

HOLUX Technology, Inc.
No. 1-1, Innovation Rd. I, Science-Based Industrial Park, HsinChu City 300, Taiwan R.O.C
TEL: [phone] FAX:[phone] E-mail:[e-mail] http:www.holux.com.tw

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M-90

GPS Module series

7

GPIO7/SIN

I/O General purpose I/O,SPI data output

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8

9

10

11

12

13

14

15

16

17

18

GND

GND

RF_IN

GND

GPIO5/SCS0

GPIO/SCK

GPIO0/GPS

status

PWR_EN

V_BAT

GND

GND

2.3 Specification

G Ground

G Ground

I GPS signal input, 2.85 VDC output

G Ground

I/O General purpose I/O,SPI chip select 0

I/O General input / output, SPI clock

O GPS status, blink when GPS has position fix General input/output

I Power enable/active high

I RTC and backup SRAM power Input:

Backup Battery : 2.6 ~ 3.6 V (use battery)

DC Input:3.3~5.0V (use VDD)

G Ground

I Ground

General

GPS technology MT3318 GPS chipset

Frequency L1,1575.42MHz

C/A Code 1.023MHZ chip rate

Channels 32 channels all in view searching

Sensitivity Better than -159dBm

Receiver Accuracy

(Follow MTK chip specification)
Without aid:3.0 M 2D-RMS

Position

DGPS(WAAS, EGNOS, MSAS, RTCM):2.5 M

Velocity Without aid:0.1M/sec

Time 0.1 µs. Sync GPS time

Datum

Datum WGS84(Default) total 219 datum’s

Time to First Fix

(Follow MTK chip specification)

Hot start 1 sec average

Warm start 33 sec average

Cold start 36 sec average

Reacquisition

Protocol

HOLUX Technology, Inc.
No. 1-1, Innovation Rd. I, Science-Based Industrial Park, HsinChu City 300, Taiwan R.O.C
TEL: [phone] FAX:[phone] E-mail:[e-mail] http:www.holux.com.tw

＜1sec

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M-90

GPS Module series

NMEA0183(v3.1)­GGA(1),GLL(1),GSA(1),GSV(5),RMC(1),

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GPS Output Data

VTG(1)
Support Baud rate 4800/9600/…./115200 bps (default

4800), Data bit:8,Stop bit:1, No parity.

Update Rata

1Hz(default)

Protocol Support NMEA-0183

1PPS

Limitations

Acceleration Limit

Altitude Limit

Velocity Limit

Enable(1Hz pulse 10% duty cycle)
(Follow MTK chip specification)

＜4G
＜18000 meters
＜515 M/sec

Jerk Limit 20 M/sec3

Power

Operation Current Acquisition:65mA@3.3V
Operation Current

Tracking:＜45mA@3.3V

VDD: 3.3~5.0V

DC Input Range

V_BAT:3.3~5.0V

Processing Core

Processor Type ARM7EJ-S

Processor Speeds 48 MHz

Integrated program

Flash

Interface CMOS 2.85 V Level

Temperature

Operating Temperature

Storage Temperature

Operating Humidity

Physical

Dimension

Weight 1g.

4 M bits

-40℃ to +85℃.

-40℃ to +85℃.

5% to 95%,No condensing

12 * 12.2 * 2.2 mm.

HOLUX Technology, Inc.
No. 1-1, Innovation Rd. I, Science-Based Industrial Park, HsinChu City 300, Taiwan R.O.C
TEL: [phone] FAX:[phone] E-mail:[e-mail] http:www.holux.com.tw

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M-90

GPS Module series

3. Mechanical Dimension

3.1 Mechanical Dimension

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HOLUX Technology, Inc.
No. 1-1, Innovation Rd. I, Science-Based Industrial Park, HsinChu City 300, Taiwan R.O.C
TEL: [phone] FAX:[phone] E-mail:[e-mail] http:www.holux.com.tw

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M-90

GPS Module series

4 Package

4.1 Packing

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Tray dimension: 325*220*9 mm, Standard Content Qty: 100 pcs.
Carton dimension: 340*235*120 mm，Standard Content Qty: 2,000 pcs.

HOLUX Technology, Inc.
No. 1-1, Innovation Rd. I, Science-Based Industrial Park, HsinChu City 300, Taiwan R.O.C
TEL: [phone] FAX:[phone] E-mail:[e-mail] http:www.holux.com.tw

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M-90

GPS Module series

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4.2 Reference product photo

The photo is for reference, the real content will depend on the real
configuration.
Top side:

Bottom side:

HOLUX Technology, Inc.
No. 1-1, Innovation Rd. I, Science-Based Industrial Park, HsinChu City 300, Taiwan R.O.C
TEL: [phone] FAX:[phone] E-mail:[e-mail] http:www.holux.com.tw

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M-90

GPS Module series

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5 User Interface

M-90 provides 2-wire digital UART port for communication of GPS position
data using NMEA protocol or MTK extension protocol. UART port is capable of
4800 to 115200 baud rate.

5.1 Protocol

M-90 is default to support standard NMEA-0183 protocol. In addition, a series
of MTK extensions (PMTK messages) have been developed that can be used
to provide extended capabilities common to many applications

5.2 NMEA Protocol

M-90 is capable of supporting following NMEA formats:

NMEA RECORD Description

GGA GPS fix data

GLL Geographic

GSA GNSS DOP and active satellite

GSV GNSS Satellites in view

Recommended minimum specific

RMC

GNSS data

Course Over Ground and Ground

VTG

Speed

ZDA Time&Data

HOLUX Technology, Inc.
No. 1-1, Innovation Rd. I, Science-Based Industrial Park, HsinChu City 300, Taiwan R.O.C
TEL: [phone] FAX:[phone] E-mail:[e-mail] http:www.holux.com.tw

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M-90

used to tell the decoder how

GPS Module series

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5.3 MTK NMEA Packet Format

Preamble TalkerID PktType Datafield * CHK1 CHK2 CR LF

Maximum packet length is restricted to 255 bytes

Field Length Type D

Preamble 1 byte Character “$”

TalkerID 4 byte Character string “PMTK”

“000”to “999”, an identifier

PktType 3 byte Character string

to decode the packet

“, ”must be inserted ahead

DataField Variable

* 1 byte Character

CHK1

2 byte Character string

CHK2

CR, LF 2 byte Binary data

each data filed to help the
decoder process the Data
Field

The star symbol is used to

mark the end of Data Field
checksum of the data
between Preamble “, ”and
“*”
used to identify the end of a
packet

HOLUX Technology, Inc.
No. 1-1, Innovation Rd. I, Science-Based Industrial Park, HsinChu City 300, Taiwan R.O.C
TEL: [phone] FAX:[phone] E-mail:[e-mail] http:www.holux.com.tw

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M-90

GPS Module series

6 Reference design

6.1 Application circuit

Block3

4

5

6

GPS_FIX

12

D2
AMBER-D0603

12

R9
240-R0402

C3

1 2

C0402C020CB

Block2 Block4

3V

12

R3

10-R0402

R1

0-R0402

R2

0-R0402

12

R4
47R0402

3V

12

D1
ASD751V

R7
470-R0402

BT1

1PPS

3V

U1

R5

10-R0402

1

1 2

TX-1
RX1

12

C6
C0402B104KP

12

C7
C0402B104KP

TX1

RX1

12

C11
C0402B104KP

VDD

2

1PPS

3

TXD0

4

RXD0

5

HRST

GPIO0/GPS STATUS

6

GPIO6/SO

7

GPIO7/SIN

8

GND

9

GND

M-90 Module

U3 SP3223EEA-SSOP20

2

C1+

4

C1-

5

C2+

6

C2-

13

T1_TTL

12

T2_TTL

15

R1_TTL

10

R2_TTL

EN1INVALID

14

ON

20

OFF

GND
GND

V_BAT

PWR_EN

GPIO8/SCK

GPIO5/SCSO

GND

RF_IN

VCC

V+

V-

T1_232

T2_232
R1_232
R2_232

GND

19

3

7

17
8
16
9

11

18

18
17
16
15
14
13
12
11
10

C0402C8R2CB

3V

5V.

1 2

1 2

1 2

C1

1 2

R11

1 2

75-R0402

C8

C0402B104KP

C0402B104KP

C9

C10 C0402B104KP

GPS_FIX

12

L1
39nH-L0402

VCC_5V

12

R6
10-R0402

DB9/90D/F

1
6
2
7
3
8
4
9
5

10 11

1 2

2

1

12

C0402B102KB

J3

MS621FL11E-BAT

R8
47-R0402

U2

OUT3GS

GND

GND

VCC

IN

BGA428

C2

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3V

R10

0-R0402

Bloc k1

C4

1 2

12

C0402C040CB

L2

3.3nH-L0402

1

L3
39nH-L0402

C5

12

C0402B104KP

32

J1

RF_IN1

U1: Holux M-90 GPS Module.
U2: BGA428, which is a GaAs MMIC Low Noise Amplifier(LNA). For good

receiving sensitivity, a low noise amplifier with 19dB gain and 1.8dB noise

figure is suggested to designed in mother board or active antenna.
U3:Silicon Labs SP3223EEA, which is a RS232 IC.
J1: Connector for passive or external antenna.
R1,R2,R10: 0Ω
R3,R6,R5: 10Ω
R4,R8:47Ω
L1,L3: 39nH
L2:3.3nH
C1:8.2pF
C2:102pF
C3:2pF
C4:4pF

Block1: The LNA environment parameter is possibly different between M-90
and the mainboard, please notice and fine tune if possible.

Block2: User can supply the low power to pin “HRST” if you want to reset GPS,
or keep the pin as “pull high” or “floating” in operating.

HOLUX Technology, Inc.
No. 1-1, Innovation Rd. I, Science-Based Industrial Park, HsinChu City 300, Taiwan R.O.C
TEL: [phone] FAX:[phone] E-mail:[e-mail] http:www.holux.com.tw

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M-90

GPS Module series

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Block3: User can supply the high power to pin “PWR_EN” to enable module or
supply the low power to pin “PWR_EN” to disable module.

Block4: For user’s convenience, M-90 sends the signal once per second from
1pps pin, The output is a CMOS 2.8V positive level signal which is

synchronous with GPS time within 1 microsecond of bias. Only upon the
situation of tracking or navigating it will output.

6.2 Reference PCB pattern

HOLUX Technology, Inc.
No. 1-1, Innovation Rd. I, Science-Based Industrial Park, HsinChu City 300, Taiwan R.O.C
TEL: [phone] FAX:[phone] E-mail:[e-mail] http:www.holux.com.tw

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M-90

GPS Module series

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6.3 Recommendation reflow profile

1. We strongly recommend that this module should be designed to mount on

top side of motherboard with main chip together which process the final

reflow.

2. The maximum frequency of this module to pass reflow process should be

no more than twice, including repair operation, otherwise it may cause side

effect to the performance.

3. Below is the recommend reflow profile referred to Main chip MT3318.

HOLUX Technology, Inc.
No. 1-1, Innovation Rd. I, Science-Based Industrial Park, HsinChu City 300, Taiwan R.O.C
TEL: [phone] FAX:[phone] E-mail:[e-mail] http:www.holux.com.tw

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