Microhard Systems P900 Operating Manual
Operating Manual
Pico Series - P900
900MHz Spread Spectrum Modem
Document: Pico Series P900 Operating Manual.v1.8.7
Date: June 2016
Firmware: v1.19
150 Country Hills Landing NW
Calgary, Alberta
Canada T3K 5P3
Phone: (403) 248-0028
Fax: (403) 248-2762
www.microhardcorp.com
Important User Information
Warranty
Microhard Systems Inc. warrants that each product will be free of defects in material and workmanship for a period of one (1) year for its
products. The warranty commences on the date the product is shipped by Microhard Systems Inc. Microhard Systems Inc.’s sole l iability and
responsibility under this warranty is to repair or replace any product which is returned to it by the Buyer and which Microha rd Systems Inc.
determines does not conform to the warranty. Product returned to Microhard Systems Inc. for warranty service will be shipped to Microhard
Systems Inc. at Buyer’s expense and will be returned to Buyer at Microhard Systems Inc.’s expense. In no event shall Microhar d Systems
Inc. be responsible under this warranty for any defect which is caused by negligence, misuse or mistreatment of a product or for any unit
which has been altered or modified in any way. The warranty of replacement shall terminate with the warranty of the product.
Warranty Disclaims
Microhard Systems Inc. makes no warranties of any nature of kind, expressed or implied, with respect to the hardware, softwar e, and/or
products and hereby disclaims any and all such warranties, including but not limited to warranty of non -infringement, implied warranties of
merchantability for a particular purpose, any interruption or loss of the hardware, software, and/or product, any delay in pr oviding the hardware, software, and/or product or correcting any defect in the hardware, software, and/or product, or any other warranty. The Purchaser
represents and warrants that Microhard Systems Inc. has not made any such warranties to the Purchaser or its agents MICROHARD SY STEMS INC. EXPRESS WARRANTY TO BUYER CONSTITUTES MICROHARD SYSTEMS INC. SOLE LIABILITY AND THE
BUYER’S SOLE REMEDIES. EXCEPT AS THUS PROVIDED, MICROHARD SYSTEMS INC. DISCLAIMS ALL WARRANTIES,
EXPRESS OR IMPLIED, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PROMISE.
MICROHARD SYSTEMS INC. PRODUCTS ARE NOT DESIGNED OR INTENDED TO BE USED IN ANY LIFE SUPPORT
RELATED DEVICE OR SYSTEM RELATED FUNCTIONS NOR AS PART OF ANY OTHER CRITICAL SYSTEM AND ARE
GRANTED NO FUNCTIONAL WARRANTY.
Indemnification
The Purchaser shall indemnify Microhard Systems Inc. and its respective directors, officers, employees, successors and assign s including any
subsidiaries, related corporations, or affiliates, shall be released and discharged from any and all manner of action, causes of action, liability,
losses, damages, suits, dues, sums of money, expenses (including legal fees), general damages, special damages, including wit hout limitation, claims for personal injuries, death or property damage related to the products sold hereunder, costs and demands of eve ry and any kind
and nature whatsoever at law.
IN NO EVENT WILL MICROHARD SYSTEMS INC. BE LIABLE FOR ANY INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL, BUSINESS INTERRUPTION, CATASTROPHIC, PUNITIVE OR OTHER DAMAGES WHICH MAY BE CLAIMED TO ARISE
IN CONNECTION WITH THE HARDWARE, REGARDLESS OF THE LEGAL THEORY BEHIND SUCH CLAIMS, WHETHER IN
TORT, CONTRACT OR UNDER ANY APPLICABLE STATUTORY OR REGULATORY LAWS, RULES, REGULATIONS, EXECUTIVE OR ADMINISTRATIVE ORDERS OR DECLARATIONS OR OTHERWISE, EVEN IF MICROH ARD SYSTEMS INC. HAS
BEEN ADVISED OR OTHERWISE HAS KNOWLEDGE OF THE POSSIBILITY OF SUCH DAMAGES AND TAKES NO ACTION TO
PREVENT OR MINIMIZE SUCH DAMAGES. IN THE EVENT THAT REGARDLESS OF THE WARRANTY DISCLAIMERS AND
HOLD HARMLESS PROVISIONS INCLUDED ABOVE MICROHARD SYSTEMS INC. IS SOMEHOW HELD LIABLE OR RESPONSIBLE FOR ANY DAMAGE OR INJURY, MICROHARD SYSTEMS INC.'S LIABILITY FOR ANYDAMAGES SHALL NOT EXCEED
THE PROFIT REALIZED BY MICROHARD SYSTEMS INC. ON THE SALE OR PROVISION OF THE HARDWARE TO THE CUSTOMER.
Proprietary Rights
The Buyer hereby acknowledges that Microhard Systems Inc. has a proprietary interest and intellectual property rights in the Hardware,
Software and/or Products. The Purchaser shall not (i) remove any copyright, trade secret, trademark or other evidence of Micr ohard Systems
Inc.’s ownership or proprietary interest or confidentiality other proprietary notices contained on, or in, the Hardware, Soft ware or Products,
(ii) reproduce or modify any Hardware, Software or Products or make any copies thereof, (iii) reverse assemble, reverse engin eer or decompile any Software or copy thereof in whole or in part, (iv) sell, transfer or otherwise make available to others the Hardware , Software, or
Products or documentation thereof or any copy thereof, except in accordance with this Agreement.
© Microhard Systems Inc. Confidential 2
Important User Information (continued)
About This Manual
It is assumed that users of the products described herein have either system integration or design experience, as well as an understanding of the fundamentals of radio communications.
Throughout this manual you will encounter not only illustrations (that further elaborate on the accompanying text), but also several symbols which you should be attentive to:
Caution or Warning
Usually advises against some action which could result in undesired or
detrimental consequences.
Point to Remember
Highlights a key feature, point, or step which is noteworthy. Keeping
these in mind will simplify or enhance device usage.
Tip
An idea or suggestion to improve efficiency or enhance usefulness.
© Microhard Systems Inc. Confidential 3
Important User Information (continued)
Regulatory Requirements
To satisfy FCC RF exposure requirements for mobile transmitting devices, a separation distance
of 23cm or more should be maintained between the antenna of this device and persons during
device operation. To ensure compliance, operation at closer than this distance is not
recommended. The antenna being used for this transmitter must not be co-located in conjunction
WARNING
with any other antenna or transmitter.
This device can only be used with antennas designed for use with 900 MHz products. Please
contact Microhard Systems Inc. if you need more information or would like to order an antenna.
WARNING
WARNING
MAXIMUM EIRP
FCC Regulations allow up to 36dBm Effective Isotropic Radiated Power (EIRP). Therefore, the
sum of the transmitted power (in dBm), the cabling loss and the antenna gain cannot exceed
36dBm.
EQUIPMENT LABELING
This device has been modularly approved. The manufacturer, product name, and FCC and
Industry Canada identifiers of this product must appear on the outside label of the end-user
equipment.
SAMPLE LABEL REQUIREMENT:
For P900
FCCID: NS913P900
IC: 3143A-13P900
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
(1) this device may not cause harmful interference,
and (2) this device must accept any interference
received including interference that may cause
undesired operation.
Please Note: These are only sample labels; different products contain different identifiers. The
actual identifiers should be seen on your devices if applicable.
© Microhard Systems Inc. Confidential 4
Revision History
Revision Description Initials Date
1.0 Draft PEH Mar 2013
1.1 Firmware v1.0 PEH Sept 2013
1.2 Official Release. Firmware v1.0. Added PTP, PMP Modes PEH Sept 2013
1.21 Added Pad Landing and Solder Mask/Paste diagrams, expanded Mesh
description, modified pins descriptions, added AT command firmware
upgrade, misc formatting corrections.
1.22 Misc Corrections PEH Feb 2014
1.3 Added RS485 Support (S142). Firmware required v1.06. PEH July 2014
1.4 Update for firmware v1.09 SG/PEH Dec 2014
1.5 Update for firmware v1.10—Added link rate 57.6 kbps, minor bugs
fixed. Added register S225 - Compression (must be set to zero for compatibility with older versions).
1.6 Update for firmware v1.11 - Added link rate 115.2 kbps. Added AT&S3
to enable RS485 driver.
1.7 Update for firmware v1.14 - Removed AT&S3, Added AT&K1 to use
CTS to control the Transmitter of RS485 driver chip.
1.8 Added P900-ENC drawings, connectors and LED descriptions PEH Sept 2015
1.81 Added P900-ENC Optional mounting Bracket. Misc updates. PEH Oct 2015
1.8.2 Modified description of S232. PEH Jan 2016
1.8.3 Updated Enclosed DB9 RS232/485 Pins. PEH Feb 2016
1.8.4 Added S159, S177 for AES Encryption PEH Feb 2016
1.8.5 Pin corrections PEH Feb 2016
1.8.6 Added MST reflow and baking instructions, misc corrections. PEH June 2016
1.8.7 Added Pico-MHX Adapter Board PEH June 2016
PEH Sept 2013
SG/PEH Jan 2015
PEH Jan 2015
PEH Aug 2015
© Microhard Systems Inc. Confidential 5
Table of Contents
1.0 Overview 10
1.1 Performance Features ........................................................................................................ 10
1.2 Specifications ..................................................................................................................... 11
2.0 Hardware Description 12
2.1 OEM Mechanical Drawing .................................................................................................. 13
2.1.1 Recommended Solder Mask (Pad Landing) .............................................................................14
2.1.2 Recommended Solder Paste Pattern .......................................................................................15
2.1.3 OEM Connectors ....................................................................................................................15
2.1.4 SMT Temperature Profile ........................................................................................................16
2.1.5 Baking Instructions (MSL) .......................................................................................................16
2.2 OEM Pin Descriptions ........................................................................................................ 17
2.3 OEM Minimum Connection Requirements ........................................................................ 20
2.4 Electrical Characteristics ................................................................................................... 21
2.4.1 Test Conditions.....................................................................................................................21
2.4.1.1 Minimum and Maximum Values ...............................................................................21
2.4.1.2 Typical Values .........................................................................................................21
2.4.1.3 Loading Capacitor ...................................................................................................21
2.4.1.4 Pin Input Voltage .....................................................................................................21
2.4.2 Absolute Maximum Ratings..................................................................................................22
2.4.3 Operating Conditions ...........................................................................................................22
2.4.3.1 Operating Conditions at Power-up / Power-down ......................................................22
2.4.3.2 Voltage Characteristics ............................................................................................22
2.4.3.3 Current Characteristics ............................................................................................23
2.4.3.4 IO Port Characteristics .............................................................................................24
2.4.3.5 12-bit ADC Characteristics .......................................................................................25
2.5 P900 to n920 Pin-outs......................................................................................................... 27
2.6 P900 Enclosed ..................................................................................................................................28
2.6.1 P900 Enclosed Mechanical Drawings ......................................................................................29
2.6.2 P900 Enclosed Mounting Bracket (Optional) ............................................................................30
2.6.3 P900 Enclosed Connectors & Indicators ..................................................................................31
3.0 Mesh Configuration 33
3.1 Configuration/Unit Modes .................................................................................................. 33
3.1.1 Command Mode .....................................................................................................................33
3.1.2 Data mode ..............................................................................................................................34
3.2 Mesh Network ..................................................................................................................... 35
3.2.1 Operating Modes / Unit Types .................................................................................................35
3.2.2 Configuration Using Factory Defaults.......................................................................................39
AT&F1 - Primary Coordinator ..................................................................................................40
AT&F2 - Mesh Remote ...........................................................................................................41
AT&F3 - Secondary Coordinator..............................................................................................42
Standby Coordinator ...............................................................................................................43
3.2.3 Unit Addressing ......................................................................................................................44
3.2.4 Collision Mitigation ..................................................................................................................45
3.2.4.1 Channel Access Mode .............................................................................................45
3.2.4.2 Carrier Sense ..........................................................................................................46
3.2.4.3 TX Profile & Ranking ...............................................................................................48
3.2.5 Retransmissions .....................................................................................................................49
3.2.6 Network Synchronization.........................................................................................................49
3.2.7 Routing...................................................................................................................................50
3.2.8 Hop Pattern ............................................................................................................................55
© Microhard Systems Inc. Confidential 6
Table of Contents (continued)
4.0 Point to Point Configuration 57
4.1 Configuration/Unit Modes .................................................................................................. 57
4.1.1 Command Mode .....................................................................................................................57
4.1.2 Data mode ..............................................................................................................................58
4.2 Point to Point Network ....................................................................................................... 59
4.2.1 Operating Modes / Unit Types .................................................................................................59
4.2.2 Configuration Using Factory Defaults.......................................................................................61
AT&F10 - PP Master ...............................................................................................................62
AT&F11 - PP Slave/Remote ....................................................................................................63
AT&F12 - PP Repeater ...........................................................................................................64
4.2.5 Retransmissions .....................................................................................................................65
4.2.6 Network Synchronization.........................................................................................................65
4.2.7 Hop Pattern ............................................................................................................................66
5.0 Point to Multipoint Configuration 68
5.1 Configuration/Unit Modes .................................................................................................. 68
5.1.1 Command Mode .....................................................................................................................68
5.1.2 Data mode ..............................................................................................................................69
5.2 Point to Multipoint Network ............................................................................................... 70
5.2.1 Operating Modes / Unit Types .................................................................................................70
5.2.2 Configuration Using Factory Defaults.......................................................................................73
AT&F7 - PMP Master ..............................................................................................................74
AT&F8 - PMP Slave/Remote ...................................................................................................75
AT&F9 - PMP Repeater ..........................................................................................................76
5.2.3 Unit Addressing ......................................................................................................................77
5.2.4 Retransmissions .....................................................................................................................77
5.2.5 Network Synchronization.........................................................................................................77
5.2.6 Hop Pattern ............................................................................................................................78
6.0 Register/Command Reference 80
6.1 AT Commands................................................................................................................... 80
A Answer .................................................................................................................................80
g, G Spectrum Analyzer ................................................................................................................80
In Identification .........................................................................................................................80
login Enable login password ..........................................................................................................81
M Mesh Diagnostics Menu ........................................................................................................81
N Advanced Spectrum Analyzer ................................................................................................82
&Fn Load Factory Default Configuration ........................................................................................82
&V View Configuration ................................................................................................................82
&W Write Configuration to Memory ..............................................................................................82
6.2 Settings (S) Registers ....................................................................................................... 83
S0 Power-up Mode.....................................................................................................................83
S2 Escape Character .................................................................................................................83
S80 Transmit Profiles ...................................................................................................................83
S81 CS Threshold ........................................................................................................................83
S83 Records TTL .........................................................................................................................84
S85 Distance to Master (PP/PMP) ................................................................................................84
S86 Distance from Master (PP/PMP) ............................................................................................84
S87 Enable S105 as MAC (Mesh) ................................................................................................84
S101 Operating Mode (Mesh) .........................................................................................................85
S101 Operating Mode (PP/PMP) ....................................................................................................85
S102 Serial Baud Rate ...................................................................................................................85
S103 Wireless Link Rate ................................................................................................................85
S104 Network ID/Address ..............................................................................................................86
© Microhard Systems Inc. Confidential 7
Table of Contents (continued)
6.2 Settings (S) Registers (continued)
S105 Unit Address .........................................................................................................................86
S106 Hop Pattern ..........................................................................................................................86
S108 Output Power ........................................................................................................................86
S109 Hop Interval ..........................................................................................................................87
S110 Data Format ..........................................................................................................................87
S111 Packet Min Size ....................................................................................................................88
S112 Packet Max Size ...................................................................................................................88
S113 Packet Retransmissions ........................................................................................................88
S115 Repeat Interval......................................................................................................................88
S116 Character Timeout ................................................................................................................88
S118 Roaming (PP/PMP) ...............................................................................................................89
S123 Average RSSI (Mesh) ...........................................................................................................89
S123 RSSI from Master (dBm) (PP/PMP) .......................................................................................89
S124 RSSI from Slave (dBm) (PP/PMP) .........................................................................................89
S126 Attempt Before Re-Route (Mesh) ...........................................................................................89
S130 No Sync Data Intake .............................................................................................................89
S133 Network Type ........................................................................................................................90
S140 Destination Address ..............................................................................................................90
S141 Repeaters Y/N (PP/PMP) ......................................................................................................90
S142 Serial Channel Mode (RS232/485).........................................................................................90
S143 Sleep Mode ..........................................................................................................................90
S144 Sleep Time ...........................................................................................................................91
S145 Wake Time ...........................................................................................................................91
S146 Tx Done Timeout, 1/4 ............................................................................................................91
S151 Quick Sync Packets (Mesh) ...................................................................................................91
S153 Address Tag .........................................................................................................................91
S158 Forward Error Correction (FEC) Mode ...................................................................................92
S159 Encryption Mode (AES) .........................................................................................................92
S163 CRC Check on Diag Port .......................................................................................................93
S177 Binary Encryption Key ...........................................................................................................93
S180 Hop Zone ..............................................................................................................................93
S181 Secondary Hop Zone ............................................................................................................93
S183 DCD Pulse Period (PP/PMP) .................................................................................................93
S184 Data Time to Live (Mesh) ......................................................................................................94
S206 Secondary Hop Pattern .........................................................................................................94
S214 Number of Aloha Slots (Mesh) ...............................................................................................94
S215 Number of Mesh Slots (Mesh) ...............................................................................................94
S216 Mesh Duty Cycle (Mesh) .......................................................................................................94
S217 Protocol Type ........................................................................................................................95
S218 Input Framing ........................................................................................................................95
S219 Routing Request TTL (Mesh) .................................................................................................95
S220 Mesh Coordinator Rank (Mesh) .............................................................................................95
S221 Mesh TDMA Slot to Tx (Mesh) ...............................................................................................95
S222 Roaming Mode (Mesh) ..........................................................................................................95
S223 Routing (Mesh) .....................................................................................................................96
S224 Standby Trip Level (Mesh) .....................................................................................................96
S225 Compression Mode ...............................................................................................................96
S232 Max Buffer in Storage ............................................................................................................96
S234 Master Ch. Request Timeout (PMP) ......................................................................................97
S235 PP Routing TTL (PP) .............................................................................................................97
S236 Max Buffer Out Storage .........................................................................................................97
S244 Channel Access Mode...........................................................................................................97
S245 Cost of Hop in Mesh ..............................................................................................................97
S247 Country Code (Read Only) ....................................................................................................97
S248 Sync Timeout ........................................................................................................................98
© Microhard Systems Inc. Confidential 8
Table of Contents (continued)
S249 Packets per Hop Tx Limit (PP/PMP) ......................................................................................98
S250 Master Bandwidth % (PMP) ...................................................................................................98
S251 Master Hop Allocation Timeout (PMP) ...................................................................................98
S252 Slave Ch. Allocation Timeout (PMP) ......................................................................................98
6.3 Serial Interface Commands .............................................................................................. 99
&Cn Data Carrier Detect (DCD) .....................................................................................................99
&Dn Data Terminal Ready (DTR) ..................................................................................................99
&K Handshaking .........................................................................................................................99
&Sn Data Set Ready (DSR) ..........................................................................................................99
7.0 Installation 100
7.1 Path Calculation .............................................................................................................. 102
7.2 Installation of Antenna System Components ................................................................ 103
7.2.1 Antennas ............................................................................................................................ 103
7.2.2 Coaxial Cable ..................................................................................................................... 104
7.2.3 Surge Arrestors ................................................................................................................... 104
7.2.4 External Filter ...................................................................................................................... 104
Appendices
Appendix A: AT Command Quick Reference ..................................................................................... 105
Appendix B: Settings (S) Register Quick Reference .......................................................................... 106
Appendix C: AT Utility Firmware Upgrade Procedure........................................................................ 107
Appendix D: AT Command Firmware Upgrade .................................................................................. 108
Appendix E: Development Board Serial Interface .............................................................................. 109
Appendix F: Pico Reference Schematic............................................................................................. 110
Appendix G: Pico-MHX Adapter Board ............................................................................................... 111
Appendix H: Approved Antennas ....................................................................................................... 113
© Microhard Systems Inc. Confidential 9
1.0 Overview
The Pico Series P900 is capable of delivering high-performance wireless serial communications in robust and secure Mesh, Point to Point or Point to Multipoint topologies.
The Pico Series is available as a low cost OEM module, for the ultimate in design integration.
When properly configured and installed, long range communications at very high speeds can
be achieved.
Pico Series modules operate within the 902-928 MHz ISM frequency band, using frequency
hopping spread spectrum (FHSS) technology, providing reliable wireless asynchronous data
transfer between most equipment types which employ a serial interface.
The small size and superior performance of the Pico Series makes it ideal for many applications. Some typical uses for this modem:
SCADA
remote telemetry
traffic control
industrial controls
remote monitoring
fleet management
GPS
metering
1.1 Performance Features
Key performance features of the Pico Series include:
transmission within a public, license-exempt band of the radio spectrum1 - this
means that the modems may be used without access fees or recurring charges
(such as those incurred by cellular airtime)
transparent, low latency link rates up to 276 kbps
communicates with virtually all serial based devices
supports a robust true Mesh operation with auto-routing
wide temperature specification
maximum allowable transmit power (1 Watt)
32 bits of CRC, selectable retransmission and forward error correction
separate diagnostics port - transparent remote diagnostics and online network
control
ease of installation and configuration - the P900 utilizes a subset of standard AT-
style commands, similar to those used by traditional telephone line modems
3.3V logic level compatibility
1
902-928 MHz, which is license-free within North America; may need to be factory-configured dif-
ferently for some countries, contact Microhard Systems Inc. for details.
robotics
display signs
railway signaling
© Microhard Systems Inc. Confidential 10
1.0 Overview
1.2 Pico Series P900 Specifications
Electrical/General
Frequency: 902 - 928 MHz
Spreading Method: Frequency Hopping
Band Segments: Selectable via Freq. Zones
Error Detection: 32 bits of CRC, ARQ
Data Encryption: 128, 196 or 256-bit AES Encryption (Requires export
(Optional) permit outside US and Canada.)
Range: 40 miles (60km)
Output Power: 100mW to 1W (20-30dBm)
Sensitivity:
Serial Baud Rate: Up to 230.4 kbps asynchronous
Caution: Using a power
supply that does not
provide proper voltage or
current may damage the
modem.
Link Rate: Up to 276 kbps
Environmental
Operation Temperature: -40oF(-40oC) to 185oF(85oC)
Humidity: 5% to 95% non-condensing
Mechanical
Dimensions: Approx: 1.05” (26.5mm) X 1.3” (33mm) X 0.13”(3.5mm)
Weight: Approx: 5 grams
Connectors: Antenna: UFL
Data: 80 Pin/Pad SMT
Link Rate 10-6BER 10-3BER
57.6 kbps -111 dBm -114 dBm
115.2 kbps -110 dBm -113 dBm
172 kbps -108 dBm -111 dBm
230 kbps -107 dBm -110 dBm
276 kbps -106 dBm -109 dBm
© Microhard Systems Inc. Confidential 11
2.0 Hardware Description
The Pico Series P900 Modem modules are available as a low cost OEM module. This OEM
version supplies all the required raw signals to allow the unit to be tightly integrated into
applications to efficiently maximize space and power requirements. The Microhard
development board can provide a convenient evaluation platform to test and design with the
module. (Contact Microhard Systems for details)
Any P900 Series module may be configured as a Primary Coordinator, Secondary
Coordinator, Standby Coordinator or Remote in a Mesh Topology, or a Master, Repeater or
Remote in a PP or PMP Topology. This versatility is very convenient from a ’sparing’
perspective, as well for convenience in becoming familiar and proficient with using the
module: if you are familiar with one unit, you will be familiar with all units.
Image 2-1: Pico P900 Top View
Image 2-2: Pico P900 Bottom View
© Microhard Systems Inc. Confidential 12
33
26.5
3.68
2.31
33
3.5
0.80
1.27
1.18
22.35
28.70
30.01
2.16
19.85
1.50
3.41
2.0 Hardware Description
2.1 Mechanical Drawings
The P900 OEM Modules have an extremely small form factor as seen in Drawing 3-3 below.
(2)
(2)
(A)
Detail
(2)
© Microhard Systems Inc. Confidential 13
See Notes
(2)
Units: millimeters
Ground Plane
Bottom View
Drawing 2-1: P900 OEM Mechanical
(1)
(A)
Detail
1. Ground plane must be connected to GND for required heat dissipation.
2. Due to manufacturing methods additional PCB material may be
present on the corners that cannot be removed. Designs should
allow for a small tolerance of this additional material, ± 0.25mm
1.27
0.81
1.83
22.35
30.02
0.99
19.86
28.70
27.99
34.34
2.0 Hardware Description
2.1.1 Recommended Solder Mask (Pad Landing)
Units: millimeters
Drawing 2-2: P900 Recommended Solder Mask
Detail
(B)
Detail
(B)
© Microhard Systems Inc. Confidential 14
19.91
30.0734.39
28.04
2.18
1.88
2.55
1.27
1.03
0.86
3.50
3.38
4.12
1.00
2.0 Hardware Description
2.1.2 Recommended Solder Paste Pattern
(D)
Detail
Units: millimeters
(D)
Detail
Drawing 2-3: P900 Recommended Solder Paste
2.1.3 OEM Connectors
Antenna
All P900 OEM Modules use an UFL connector for the antenna connection.
Data
The interface to the P900 OEM module is a tight integration using 80 pad SMT connections.
Detail
(C)
Detail
(C)
© Microhard Systems Inc. Confidential 15
2.0 Hardware Description
2.1.4 SMT Temperature Profile
300
240
217
180.0
165
T
MAX
=255oC
2.42(oC/s)
60~100s
120.0
60.0
0.0
Drawing 2-4: Reflow Profile
Temperature Zone Time Parameter
Preheat zone:
(40oC - 165oC)
Soak Zone:
(165oC - 217oC)
Reflow zone:
(>217oC)
Cooling zone Cooling rate: 2oC/s ≤ Slope ≤ 5oC/s
Table 2-1: Reflow Parameters
- Heating rate:
60 - 100s -
120s Peak reflow:
0.5oC/s-2oC/s
255oC
120s
Zone Temperature (oC)
1 120
2 140
3 160
4 180
5 215
6 255
7 255
8 255
9 250
10 130
Chain Speed: 60cm/min
Table 2-2: Oven Temperature Profile
2.1.5 SMT Baking Instructions (MSL)
The P900 OEM modules must be baked before mounting, the following baking instruction should be followed for the best results:
a) Minimum of 8 to 12 hours at 125°C +/- 5°C for high-temperature device containers.
b) Unused modules should be stored at ≤ 10% RH
© Microhard Systems Inc. Confidential 16
2.0 Hardware Description
2.2 Pico OEM Pin Descriptions
GND
1
GND
DNC
DNC
DNC
DNC
DNC
USR1 - GPS/1PPS
USR2 - Alarm
USR3
I/O1
I/O2
I/O3
I/O4
USR AO0
USR AN0
USR AN1
GND
USBDP
USBDM
RSSI LED1
RSSI LED2
RSSI LED3
LED RX
LED TX
80 79 78 77 76 75 74 73 72 71 70 69 68
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Reserved
Reserved
GND
GND
GND
GND
GND
DNC
DNC
DNC
DNC
DNC
Pico Series
P900
(Top View)
GND
GND
GND
67 66 65
64
Vcc
63
Vcc
62
Vdd
61
Reserved
60
Reserved
59
Reserved
58
Reserved
57
Reserved
56
Reserved
55
Reserved
54
Reserved
53
Reserved
52
Reserved
51
CANRX
50
CANTX
49
Reserved
48
Reserved
47
Wakeup_usr
46
!CONFIG
45
!RESET
44
RSMode
43
Reserved
42
Vbat
41
40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25
GND
Inputs and outputs are
3.3V nominal (3.0V min
— 3.6V max) unless
otherwise specified.
The above drawing depicts a top view of the P900-OEM Module. The corner pads (1, 25, 41,
and 65) are printed directly on the bottom of the PCB for easy identification.
A full description of the connections and function of each pin is provided on the pages that
follow.
© Microhard Systems Inc. Confidential 17
Reserved
GND
GND
Serial RING
Serial RxD
Serial TxD
Serial DSR
Serial CTS
Serial DTR
Serial DCD
Serial RTS
Control RxD
USR SCK
Control TxD
Drawing 2-5: Pico P900 80-pin OEM Connection Info
GND
GND
2.0 Hardware Description
Caution: During power up
or reset, output pins from
the Pico are in an unknown
state. It is advised to use
pull up or pull down
resisters as appropriate.
Pin Name No. Description
GND 1,17,25-26,39-
DNC 2,3,4,5,6 Reserved for factory use only.
USR1 –
GPS/1PPS
USR2 - Alarm 8
USR3 9
I/O 1,2 10,11 Digital Outputs. 3.3 V Output @ 3mA maximum. O
I/O3,4 12,13 Future Use I/O
USR_ANO0 14
USR_AN0
USR_AN1
USBDP 18
USBDM 19
LED_1 (RSSI1) 20 Receive Signal Strength Indicator 1. Active high, cannot drive LED
LED_2 (RSSI2) 21 Receive Signal Strength Indicator 2. Active high, cannot drive LED
LED_3 (RSSI3)
LED_RX 23 Active high output indicates receive and synchronization status.
LED_TX 24 Active high output indicates module is transmitting data over the RF
Serial RING 27
Serial RxD 28 Receive Data. Logic level input into the modem. It is recommended
Serial TxD 29 Transmit Data. Logic level Output from the modem. It is
Serial DSR 30
Serial CTS 31
Serial DTR 32 Data Terminal Ready. Active low input. I
Serial DCD 33 Data Carrier Detect. Active low output. O
Serial RTS 34 Request To Send. Active low input. I
USR SCK 35
41,65-67,75-80
Ground reference for logic, radio, and I/O pins.
*Currently Not Supported. For Future Expansion*
7
*Reserved for future use.*
*Reserved for future use.*
*Currently Not Supported. For Future Expansion*
15
Analog Inputs. 0 to 3V input, 12 bit. I
16
*Currently Not Supported. For Future Expansion*
*Currently Not Supported. For Future Expansion*
directly. Requires current limiting resistor. 8mA maximum.
directly. Requires current limiting resistor. 8mA maximum.
22
Receive Signal Strength Indicator 3. Active high, cannot drive LED
directly. Requires current limiting resistor. 8mA maximum.
Active high, cannot drive LED directly. Requires current limiting
resistor. 8mA maximum.
channel. Active high, cannot drive LED directly. Requires current
limiting resistor. 8mA maximum.
Internally connected to GND through a 22kΩ resistor. In RS485
modes the RING line is set high and is normally used to enable the
receiver of the RS485 driver.
to wire this pin out through a zero ohm resister to a header and
jumper block for external access to the serial port for modem
recovery procedures.
recommended to wire this pin out through a zero ohm resister to a
header and jumper block for external access to the serial port for
modem recovery procedures.
Data Set Ready. Active low output. The DSR line may be used to
enable the transmitter of the RS485 driver chip.
Clear To Send. Active low output. The CTS line may be used to
enable the transmitter of the RS485 driver chip.
*Currently Not Supported. For Future Expansion*
Dir
I
O
O
O
O
O
O
O
O
O
I
O
O
O
I
© Microhard Systems Inc. Confidential 18
Table 2-3: Pico Series Pin Description
2.0 Hardware Description
Caution: During power up
or reset, output pins from
the Pico are in an unknown
state. It is advised to use
pull up or pull down
resisters as appropriate.
Pin Name No. Description
Reserved 36
Control RxD 37 Diagnostics receive data. Logic level input from a PC to the module. I
Control TxD 38 Diagnostics transmit data. Logic level output from module to a PC. O
Vbat 42 Input voltage sensing analog input line, up to 60VDC maximum. Used to
Reserved 43
RSMode 44
!RESET 45 Active low input will reset the module. I
!CONFIG 46 Active low input signal to put module into default serial interface (RS232) and
!Wakeup_usr 47 Active high input used to wake the model from sleep mode. I
Reserved 48
Reserved 49
CANTX 50
CANRX 51
Reserved 52-61
Vdd 62 Positive voltage supply voltage for the digital section of the module (3.3V). I
Vcc 63,64 Positive voltage supply voltage for the radio module (3.3V). The Vcc lines are
Reserved 68,69
DNC 70-74 Reserved for factory use only.
*Reserved for future use.*
measure the main supply voltage. User design must add a 10kΩ 1% 1/16W
resistor in series.
*Reserved for future use.*
Internally connected to GND through a 10kΩ resistor. *Reserved for future
use.*
default baud rate (9600/8/N/1) during power up. Pull high or leave floating.
*Reserved for future use.*
*Reserved for future use.*
*Currently Not Supported. For Future Expansion*
*Currently Not Supported. For Future Expansion*
*Reserved for future use.*
internally connected together.
*Reserved for future use.*
Table 2-3: Pico Series Pin Description (continued)
Dir
O
I
I
I
All serial communications signals are logic level (0 and 3.3V). DO NOT connect RS-232 level
(+12, -12VDC) signals to these lines without shifting the signals to logic levels.
© Microhard Systems Inc. Confidential 19
2.0 Hardware Description
2.3 Minimum Connection Requirements
3.3V
62 63 64
VCC
VDD
Antenna
UFL
Optional
RS-232
Driver
29 Serial TxD
28 Serial RxD
P900
GND Pins
1 17 25 26 39 40 41 65 66 67 78 79 80
© Microhard Systems Inc. Confidential 20
Drawing 2-6: P900 Minimum Connection Block Diagram
2.0 Hardware Description
2.4 Electrical Characteristics
2.4.1 Test Conditions
Unless otherwise specified, all voltages are referenced to Vss(GND).
2.4.1 Minimum and Maximum Values
Unless otherwise specified the minimum and maximum values are guaranteed in the worst
conditions of ambient temperature, supply voltage and frequencies.
Data based on characterization results, design simulation and/or technology characteristics
are indicated in the table footnotes and are not tested in production. Based on
characterization, the minimum and maximum values refer to sample tests and represent the
mean value plus or minus three times the standard deviation (mean±3Σ).
2.4.1.2 Typical Values
Unless otherwise specified, typical data are based on TA = 25 °C, VDD = 3.3 V. They are given
only as design guidelines and are not tested.
Typical ADC accuracy values are determined by characterization of a batch of samples from
a standard diffusion lot over the full temperature range, where 95% of the devices have an
error less than or equal to the value indicated (mean±2Σ).
2.4.1.3 Loading Capacitor
The loading conditions used for pin parameter measurement are shown in Figure 2-1.
2.4.1.4 Pin Input Voltage
The input voltage measurement on a pin of the Pico is described in Figure 2-2.
Figure 2-1 Pin Loading Conditions
© Microhard Systems Inc. Confidential 21
Pico pin
Figure 2-2 Pin Input Voltage
Pico pin
2.0 Hardware Description
2.4.2 Absolute Maximum Ratings
Stresses above the absolute maximum ratings listed in Table 2-2: Voltage Characteristics
and Table 2-3: Current Characteristics may cause permanent damage to the device. These
are stress ratings only and functional operation of the device at these conditions is not
implied. Exposure to maximum rating conditions for extended periods may affect device
reliability.
Symbol Ratings Min Max Unit
VCC/VDD External main supply voltage. 0 3.8
VIN Input voltage on any pin. -0.3 VDD+0.3
V
Table 2-4 Voltage Characteristics
Symbol Ratings Max Unit
I
Total current into Pico Series (source). 70
VDD
I
Total current out of Pico Series (sink). 70
VSS
I
Output current sunk by any I/O and control pin. 20
IO
Output Current sourced by any I/O and control pin. -8
Table 2-5 Current Characteristics
mA
2.4.3 Operating Conditions
2.4.3.1 Operating Conditions at Power-up / Power-down
The parameters given in Table 2-4: Operating Conditions at Power-up/ Power-down are
derived from tests performed under the ambient temperature ratings of the Pico Series.
Symbol Parameter Min Max Unit
VDD
VDD rise time rate. 0 ∞
VDD fall time rate. 20 ∞
Table 2-6 Operating Conditions at Power-up/Power-down
µs/V t
2.4.3.2 Operating Conditions Voltage Characteristics
The parameters given in Table 2-5: Operating Conditions Voltage Characteristics are
derived from tests performed under the ambient temperature ratings of the Pico Series.
Symbol Ratings Min Max Unit
VCC External radio supply voltage. 3.3
VDD External digital supply voltage. 3.0 3.6
1. The modem will not be able to transit at full power if V
© Microhard Systems Inc. Confidential 22
(1)
3.6
Table 2-7 Operating Conditions Voltage Characteristics
is less than 3.3VDC.
CC
V
2.0 Hardware Description
2.4.3.3 Operating Conditions Current Characteristics
The parameters given in Table 2-6: Operating Conditions Current Characteristics are
derived from tests performed under the ambient temperature ratings of the Pico Series. Test
conditions measured while Vcc = 3.3V, VDD = 3.3V, Frequency 915MHz and ambient
temperature of 25oC.
Symbol Ratings Min Typ Max Unit
I
Radio current 100% TX @ 1W 1250 1500
VCC(TX)
I
Radio current 100% TX @ 500mW 375 500
VCC(TX)
I
Radio current 100% TX @ 100mW 180 250
VCC(TX)
I
Radio current 100% RX @ 1W 75 100
VCC(RX)
I
VCC(RX-RUN)
I
VCC(IDLE)
I
VDD(RUN)
I
VDD(IDLE)
Radio RX running 40 75
Radio Idle current 2.5 3.5
Digital current 45 50
Digital idle current 5
mA
Table 2-8 Operating Conditions Current Characteristics
2.4.3.4 I/O Port Characteristics
General Input / Output Characteristics
The parameters given in Table 2-7: I/O Static Characteristics are derived from tests
performed under the ambient temperature ratings of the Pico Series. All I/Os are CMOS and
TTL compliant. I/O’s refer to all input and outputs of the Pico Series.
Symbol Parameter Conditions Min Typ Max Unit
VIL
VIH
VIL
VIH
V
I
RPU
RPD
CIO
1. Hysteresis voltage between Schmitt trigger switching levels. Based on characterization, not tested in production.
2. Pull-up and pull-down resistors can be used on input/output pins.
Input low level voltage
Input high level voltage 2 VDD+0.5
Input low level voltage
Input high level voltage 0.65 VDD VDD+0.5
IO Schmitt trigger voltage
hys
hysteresis
Input leakage current
lkg
Weak pull-up equivalent resistor
Weak pull-down equivalent resistor
I/O pin capacitance
(1)
(2)
Table 2-9 I/O Static Characteristics
VSS ≤ VIN≤ VDD
(2)
TTL ports
CMOS ports
VIN = VSS
VIN = VDD
-0.5 0.8
-0.5 0.35 VDD
200
±1
30 40 50
30 40 50
8
V
V
mV
µA
kΩ
pF
© Microhard Systems Inc. Confidential 23
2.0 Hardware Description
Output Driving Current
The GPIOs (general purpose input/outputs) can sink or source up to +/-8 mA, and sink
+20 mA (with a relaxed VOL).
In the user application, the number of I/O pins which can drive current must be limited to
respect the absolute maximum rating specified in Section 2.5.2:
● The sum of the currents sourced by all the I/Os on VDD cannot exceed the absolute maximum rating
I
(see Table 2-3).
VDD
The sum of the currents sunk by all the I/Os on VSS cannot exceed the absolute maximum rating I
(see Table 2-3).
Output Voltage Levels
Unless otherwise specified, the parameters given in Table 2-8 are derived from tests
performed under ambient temperature and VDD supply voltage ratings of the Pico Series. All I/Os are
CMOS and TTL compliant.
VSS
Symbol Parameter Conditions Min Max Unit
Output low level voltage for an I/O pin
(1)
V
OL
V
OH
V
OL
V
OH
V
OL
V
OH
1. The IIO current sunk by the device must always respect the absolute maximum rating specified in Table 2-3 and the sum of IIO (I/O ports and control
2. The IIO current sourced by the device must always respect the absolute maximum rating specified in Table 2-3 and the sum of IIO (I/O ports and
3. Based on characterization data, not tested in production.
when 8 pins are sunk at same time
Output high level voltage f or an I/O pin
(2)
when 8 pins are sourced at same time
Output low level voltage for an I/O pin
(1)
when 8 pins are sunk at same time
Output high level voltage f or an I/O pin
(2)
when 8 pins are sourced at same time
Output low level voltage for an I/O pin
(1)(3)
when 8 pins are sunk at same time
Output high level voltage f or an I/O pin
(2)(3)
when 8 pins are sourced at same time
pins) must not exceed I
control pins) must not exceed I
.
VSS
.
VDD
Table 2-10 Output Voltage Characteristics
TTL port
IIO = +8mA
CMOS port
IIO = +8mA
IIO = +20mA
0.4
V
VDD-0.4
0.4
V
2.4
1.3
V
VDD-1.3
Input / Output AC Characteristics
The values of input/output AC characteristics are given in Table 2-9.
Symbol Parameter Conditions Min Max Unit
t
Output high to low f all time
f(IO)out
t
Output low to high level rise time 125
r(IO)out
t
EXTlpw
Pulse width of external signals used as
interrupts.
CL = 50 pF
1 ms
125
ns
© Microhard Systems Inc. Confidential 24
Table 2-11 Input / Output AC Characteristics
2.0 Hardware Description
NRST Pin Characteristics
The NRST pin input driver uses CMOS technology. It is connected to a permanent pull-up
resistor, RPU (see Table 2-7).
Symbol Parameter Conditions Min Max Unit Typ
V
NRST Input low level voltage -0.5 0.7
IL(NRST)
V
IH(NRST)
V
hys(NRST)
RPU Weak pull-up equivalent resistor VIN=VSS 30 50 kΩ 40
VNF NRST Input pulse 300 ns
NRST Input high level voltage
NRST Schmitt trigger voltage hysteresis mV 200
Table 2-12 NRST Pin Characteristics
2 VDD+0.5
V
Pico Series
Figure 2-3 Recommended NRST Pin Protection
2.4.3.5 12-bit ADC Characteristics
The parameters given in Table 2-11: ADC Characteristics are derived from tests performed
under the ambient temperature and supply voltage ratings of the Pico Series.
Symbol Parameter Min Max Unit
V
Conversion voltage range 0 3.0 V
AIN
R
Symbol Parameter Test Conditions Typ Max Unit
ET
EO
EG
ED
EL
External input impedance
AIN
Total unadjusted error
Offset error
Gain error
Differential linearity error
Integral linearity error
Table 2-13 12-bit ADC Characteristics
Table 2-14 ADC Accuracy
0 1.2 kΩ
1.3 2
1 1.5
0.5 1.5
0.7 1
0.8 1.5
LSB TA = 25OC
© Microhard Systems Inc. Confidential 25
2.0 Hardware Description
ADC Accuracy Characteristics
[1LSB
= 3.0/4096]
IDEAL
Figure 2-4 ADC Accuracy Characteristics
© Microhard Systems Inc. Confidential 26
2.0 Hardware Description
2.5 P900 to Nano n920 Pin-Outs
The following table shows a pin-out comparison between the P900 and the n920. This table
may be useful for customers who current have the n920 who wish to migrate to the P900
platform.
Pin Name P900 Pin No. n920 Pin No. Description
USR1 7 35
USR2 8 37
USR3 9 39
USR_AN0 15 9
USBDP 18 25
USBDM 19 21
LED_1 (RSSI1) 20 30 Rec eive Signal Strength Indicator 1.
LED_2 (RSSI2) 21 28 Rec eive Signal Strength Indicator 2.
LED_3 (RSSI3)
For detailed pin
descriptions refer to
Section 2.3 Pin Description.
LED_RX 23 22 Active high output indicates receive and synchronization status.
LED_TX 24 24 Active high output indicates module is transmitting RF data.
Serial RING 27 38
Serial RxD 28 42 Receive Data. Logic level input into the modem.
Serial TxD 29 44 Transmit Data. Logic level Output from the modem.
Serial DSR 30 36 Data Set Ready. Active low output.
Serial CTS 31 32 Clear To Send. Active low output.
Serial DTR 32 40 Data Terminal Ready. Active low input.
Serial DCD 33 46 Data Carrier Detect. Active low output.
Serial RTS 34 34 Request To Send. Active low input.
USR SCK 35 50
Control RxD 37 20 Diagnostics receive data.
Control TxD 38 18 Diagnostics transmit data.
Vbat 42 17 Battery Voltage sensing analog input line.
RSMode 44 19
!RESET 45 15 Active low input will reset the module.
!CONFIG 46 13 A ctive low input signal to put module into default serial mode.
Wakeup_usr 47 11 Active high input used to wake the model from sleep mode.
!Bootpgm_mode 48 7
CANTX 50 12
CANRX 51 10
Vdd 62 Positive voltage supply voltage for the digital section of the module (3.3V).
Vcc 63,64 Positive voltage supply voltage for the radio module (3.3V).
Vcc2 75,76,77 N/A
*Currently Not Supported. For Future Expansion*
*Reserved for future use.*
*Reserved for future use.*
Analog Input 0. *Future Use.*
*Currently Not Supported. For Future Expansion*
*Currently Not Supported. For Future Expansion*
22 26
51,53,55,57,59
Receive Signal Strength Indicator 3.
*Reserved for future use.*
*Currently Not Supported. For Future Expansion*
*Reserved for future use.*
*Reserved for future use.*
*Currently Not Supported. For Future Expansion*
*Currently Not Supported. For Future Expansion*
*Reserved for future use.*
Table 2-15: P900 to Nano n920 Pin Description
© Microhard Systems Inc. Confidential 27
2.0 Hardware Description
2.6 P900 Enclosed
The Pico Enclosed provides a standalone P900 with standard interfaces for Data, Power and
Antennas. The P900 Enclosed is ideal for base stations or applications where complicated
integration of the OEM module is not required, but a modem with a small footprint is still
required. The P900 Enclosed can also be used to quickly evaluate the features and
performance of the P900 modems.
The P900 Enclosed provides quick access to several of the interfaces of the P900, such as:
Input Power (9-30VDC)
Power LED (Blue)
RS232/RS485 Data Interface
RSSI LED Indicators (Green)
TX/RX LED Indicators (Red/Green)
CONFIG Button
Antenna
USB Port (Diagnostic Port)
I/O pins (Future Development)
© Microhard Systems Inc. Confidential 28
Image 2-4: P900 Enclosed
65.40
78.48
49.00
12.00
46.00
26.00
49.00
2.0 Hardware Description
2.6.1 P900 Enclosed Dimensional Drawings
Drawing 2-7: P900 Top View
Drawing 2-8: P900 Enclosed End Views
© Microhard Systems Inc. Confidential 29
Drawing 2-9: P900 Enclosed Side View
Notes: The dimension unit is mm.
12.5
12.5
20.1
23.7
4.0
4.0
12.2
17.2
65.2
47.4
45.0
30.0
54.0
20.1
2.0 Hardware Description
2.6.2 P900 Enclosed Mounting Bracket (Order Option)
Drawing 2-10: P900 –ENC Mounting Bracket Front/Rear (Shown optional TS35 DIN Rail Mount)
© Microhard Systems Inc. Confidential 30
Drawing 2-11: P900 –ENC Mounting Bracket Top View
Notes: The dimension unit is mm.
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