FCC ID: B46CH4390 RF MODULE FOR THE RETREIVEAL OF SENSOR DATA

es CH4390 Wireless Sensor Module DESCRIPTION FEATURES The Cermetek CH4390 is a RF module designed for Small Size: 50 mm by 20 mm by 5 mm high the wireless retrieval of sensor data using the . Cermetek patented SensorOnAir technology. The e SensorOnAir allows sensors to be connected to CH4390 includes 5 dedicated analog inputs and 12 the Endpoint or Router node and be read programmable I/O pins. remotely from the Network Coordinator. The CH4390 uses a proprietary mesh networking e 5 Dedicated, 12-bit Analog Inputs protocol. It supports point-to-point, star and tree networks. Any CH4390 can be configured as a Network Coordinator, Router or Endpoint. e Control & configuration via ASCII text commands Configuration is accomplished through simple Text issued through the serial interface ds entered into the serial port. commands entered into the serial po Serial data rates from 1200 to 115,200 bps The CH4390 includes FCC Part 15 certification. No Low P ion: 3.3 Volts, ?

license is required for customers who design this Low Power operation; 3.3 Volts, 2? mw e 12 Programmable I/O lines module into their systems. e Output Power 27 dBm (500 mW) Receive Sensitivity -100 dBm MODELS e Maximum Range 10 Miles CH4390 900 MHz; Frequency Hopping Module; e RoHS compliant Operating Temp 0C to 70C CH4390 ET900 MHz; Frequency Hopping Medule;

Operating Temp -40C to 85C Figure 1: Functional Block Diagram of CH4390 RF Front End a

& Power Amp ea TRANSCEIVER COMMUNICATIONS JTAG CONTROLLER PORT Digitalvo Analog USBIF Inputs User 4 Warn) Ciera dest. SSS aS 2011 Cermetek Microelectronics, Inc. Page 1 Document No. 607-0033 Revision A (06/11) Cermetek Microelectronics, Inc CH4390 Wireless Sensor Module CH4390 DESIGN NOTES The following design notes are intended to assist the developer in achieving maximum utility from the CH4390. Power Supply: The CH4390 module utilizes sensitive high frequency electronics. The CH4390 divides the 900 MHz Frequency band (902 to 928 MHz) into 64 distinct channels to spread the power over the entire frequency band. This frequency hopping scheme allows higher transmitted power than would be possible with a single carrier frequency. Even with this higher signal power received signal strength can still be very low making demodulation difficult. Steps must be taken by the user to guarantee that power supply noise on all supply lines, including ground, does not exceed 50 mV peak to peak. Dedicated power and ground planes are essential for good results. Failure to provide such operating conditions could cause the CH4390 to malfunction or to function erratically. The CH4390 requires a single +3.3V + 0.3 volt supply. It is recommended that by-pass capacitors be placed on the power supply as close to the modem's supply input as practical. Cermetek recommends a 10 pF Tantalum capacitor in parallel with a 0.01 pF ceramic capacitor. Non-Volatile RAM (NVRAM): The CH4390 incorporates NVRAM to store the configuration profile. The AT&W command will store the active settings of The Bx, Kx, Mx, Nx, Px, Ux, and AT&D commands. FCC Part 15 Certification: The CH4390 includes FCC Part 15 certification (pending). This permits operation in the United States with no license. Sensor Inputs/Control Outputs: The CH4390 employs five dedicated Analog Inputs and 12 programmable Digital Inputs/Outputs. The Analog Inputs, ADO, AD1, AD2, AD3, and AD4, have 12 bit resolution. These inputs are referenced to the Vref input to the CH4390. The Digital Input/Output lines are defined as inputs or outputs by the user with the AT&D command. These input and output lines can be used when the CH4390 is configured as an Endpoint or a Router. SensorOnAir: This patented technique allows the reading of remote sensor values or setting remote outputs with a single command. NO other intelligence or intervention is required at the sensor node. The command AT#PmUnR is used to read the remote sensor values at the Endpoint or Router defined by PCN m (Parent Channel Number) and Unit ID n. When this command is issued the Endpoint returns the values of all of the sensors as a string of hexadecimal codes, see below. The -R prefix indicates that the sensor readings are to follow. R 0067 09,36, 09,54, 09,94, 09,63, 09,A3, OA, P3

| | | | | | id UID ADCO ADC1 ADC2 ADC3 ADC4 P1 P3 The command AT#PmUnSxxxx is used to set the level of signals at the Endpoint defined by PCN m

(Parent Channel Number) and Unit ID n which have been defined as outputs. The variable xxxx is the decimal sum of the output settings per the chart below. An output will remain low until set high. 1/0 Signa Decimal Value when set high

| P30

| P34

| P32

| P33

| P34

| P35

| P36

| PAO |

| P12 |

| P13 |

eS SSS SD 2011 Cermetek Microelectronics, Inc. Page 2 Document No. 607-0033 Revision A (06/11) Cermetek lectronics, Inc CH4390 CONFIGURATION COMMANDS Control and configuration of the CH4390 is accomplished through commands issued through the module's serial interface. Below is a list of the available commands. COMMANDS:

A/ - Repeat Last Command: The A/ command causes the CH4390 to re-execute the last command issued. Bx - Serial Port Baud Rate: The B command sets the data rate at which the serial interface will accept commands and send responses. The default value is 19,200 bps, x=4. x=0 1200 bps x=1 2400 bps x=2 4800 bps x=3 9600 bps x=4 s- 19,200 bps

= 38,400 bps x=6 57,600 bps x=7 115,200 bps ix Module Identifier: This command provides information on the connected the module x=0 Mode! Number x=1 Firmware Revision x=2 Manufacturer X=3 Current value of VCC Mx - Node Type: This command defines modules node function. x=0 Reserved x=1 Endpoint (Sensor Node) x=2 Router (Relay Node) X=3 Network Coordinator (Hub) Nx - Set Network ID: This commands set the modules Network ID. The Network ID's of two modules must be the same for them to communicate. x= Network ID 0

=1 Network ID 1 x= Network ID 2 x= Network ID 3 2011 Cemmetek Microelectronics, Inc. Page 3 CH4390 Wireless Sensor Module Ux - Set Unit ID: this command sets the node address of the module. Each node in a network must have a unique Unit ID. X= 1 to 65000 Px Set Parent Channel Number: This command sets the Parent Channel Number (PCN) of the node. The PCN of the Router or Network Coordinator must be the same as the Child the Channel Number (CCN) the lower level Router or Endpoint nodes with which it communicates. Other sub-networks may not use the same PCN. X= 1 to 63 Kx Set Child Channel Number: This command sets the Child Channel Number (CCN) of the node. The CCN of the Router or Endpoint must be the same as the Parent Channel Number (PCN) of the higher level Router or Network Coordinator nodes with which it communicates. Other sub-networks may not use the same CCN. X= 1 to 63 AT&Dnnnn Program Digital 0: This command defines the 12 Digital I/O as either inputs or outputs. The nnnn represents the decimal sum of a 12 bit binary sequence, see below. Setting a bit to 1 defines the I/O as an output. Decimal Value as Output

| WO Signal_|

| P30

|p P34

| P32

| P33 |

| P34

| P35

| P36

| P37 |

| P10 p PA

| P12 |

| P13 n=0000 All I/O lines to act as inputs n=4095 All I/O lines to act as outputs Document No. 607-0033 Revision A (06/11) Cermetek Microelectronics, Inc AT&l Read Local I/O Value: This command causes the CH4390 to report the current value of all of the Digital I/O lines. The values will be reported as the sum of the decimal values as described below. 10 Signal | Decimal Value when Input high

[P30 | a |

[p32 [ 4 |

ET gs -

gs |;

[P35 hd] tC; SCC

| P36) 6|rtiC;C C4

[P37 |) t i2B*!C

| Pio) UvTlCCtC~i(O;C2OOCdS Y Pits [| ID Cid P P12 1024

| P13 2048 AT&On Set Local I/O Value: This command sets the condition of the Digital I/O lines defined as outputs. The values are issued as a single decimal number as shown below. VO Signal Decimal Value as Output es Pr ccm ee ee es en |

PD

[lm sd P37 {| 128s

| t OCS Pit [| 512, 1024 2048 n=0 Set All 1/0 lines low n=4096 Set All I/O lines high AT&V -- Display Current Settings: This command causes the CH4390 to respond with a listing of its current configuration. AT&W - Save Current Settings: The &W command causes the CH4390 to save the current configuration in NVRAM. CH4390 Wireless Sensor Module AT#B Broadcast: The #B command causes the CH4390 to broadcast a test pattern. The CH4390 will discontinue broadcasting if any character is presented on TXD AT#C Receive Broadcast This command allows the CH4390 to receive a broadcasted message. The message and the RSSI (received signal strength indicator will be presented the /RXD line of the serial interface. AT#PmUnR Read Remote Sensor: This command causes the Network Coordinator to Read the values of all Digital I/O and Analog inputs from the remote node on PCN m with Unit ID n. The results are shown in Hexadecimal form as shown below. OK (command was received by the local module)

.R 0067: 09, 36, 09, 54, 09, 94, 09, 63, 09, A3, OA

Unit ID _|

ADCO |

ADC1 ADC2

ADC3 |

P1.0 to P1.3 |

P3.0 to P3.7 AT#PmUnSx Set Remote Output:This command sets the values of the remote Digital outputs. The values will be reported as a single decimal number as described for the AT&Dn command. n=0 All /O lines set low n=4096 All I/O lines set high Table 1: CH4390 Modem Responses Verbose Result Code CR><LF>ERROR<CR><LF>

Description

<CR><LF>OK<CR><LF> Command executed successfully Command could not be executed Te 2011 Cermetek Microelectronics, inc. Page 4 Document No. 607-0033 Revision A (06/11) Cermetek Microelectronics, Inc 4390 Wireless Sensor Module Figure 2: CH4390 Mechanical Specifications polomeY \

I Table 2: CH4390 Mechanical Specifications DIMENSION] TYP [~S*ESCRIPTION

[A | 800 [Nediiolenghinmilintees 2011 Cermetek Microelectronics, inc. Page 5 Document No. 607-0033 Revision A (06/11) Cermetek Microelectronics, Inc CH4390 Wireless Sensor Module CH4390 SURFACE MOUNT SOLDERING INSTRUCTIONS The CH4390 is subject to damage if over-exposed to heat during solder reflow operations. Following the soldering instructions below will ensure that the process of soldering the module to the board does not damage the modem. Absolute Maximum Temperature: 250 C Maximum Time at 235 C: 15 Seconds Maximum Time in reflow zone (217 C): 90 Seconds Maximum Preheat Dwell Time: 180 Seconds Figure 3: Maximum Recommended Solder Temperature Profile 295C fe eg ee -

Q17C med ee ee es Mme oe min ete ceues Vo. -

: : 15sec :

weer eco ene 180 sec max---------- '

r "le ~-80 sec max-- +}

ee 2011 Cermetek Microelectronics, Inc. Page 6 Document No. 607-0033 Revision A (06/11) Cermetek Microelectronics, Inc CH4390 Wireless Sensor Module Figure 4: CH4390 Solder Pad Configuration CH4390 Bottom View CH4390 PAD DESCRIPTIONS PAD SIGNAL DESCRIPTION 1-9 Ground These pads provide connections to ground on the CH4390. A solid ground is essential for optimum performance. 10 vcc This pad provides 3.3 Volt power to the CH4390. Cermetek recommends a 10 wF Tantalum filter capacitor be placed in parallel with a 0.01 uF ceramic capacitor between VCC and ground. The bypass capacitors should be placed as close to the VCC pin on the module as possible 11 TDO reserved 12 TCLK reserved 13. TMS reserved 14 TCK reserved 15 TEST reserved 16 /RESET This active low signal permits the host system to force the CH4390 to execute a hardware Reset. 17 VREF reserved 18 ADC4 This is one of five analog inputs to the CH4390. Each analog input connects to a 12-bit Analog-

to-Digital converter, 4096 steps. Full scale input is 2.5 Volts. 19 ADC3 This is one of five analog inputs to the CH4390. Each analog input connects to a 12-bit Analog-

to-Digital converter, 4096 steps. Full scale input is 2.5 Volts. 20 ADC2 This is one of five analog inputs to the CH4390. Each analog input connects to a 12-bit Analog-

to-Digital converter, 4096 steps. Full scale input is 2.5 Volts. 21 ADC! This is one of five analog inputs to the CH4390. Each analog input connects to a 12-bit Analog-

to-Digital converter, 4096 steps. Full scale input is 2.5 Volts. 22 ADCO This is one of five analog inputs to the CH4390. Each analog input connects to a 12-bit Analog-

to-Digital converter, 4096 steps. Full scale input is 2.5 Volts. SS SS 2011 Cemmetek Microelectronics, Inc. Page 7 Document No. 607-0033 Revision A (06/11) Cermetek Microelectronics, Inc CH4390 Wireless Sensor Module PAD SIGNAL DESCRIPTION 23 JRTS 24 /RXD 25 /TXD 26 ICTS 27 P13 28 P12 29 P14 30. P1.0 31. P37 32 P36 33. P35 34. P34 35 P33 36 P32 37. P34 38 = P3.0 39-49 Ground This active low input signal presents Request To Send from the serial port to the CH4390 for flow control. The host system activates Request to Send when it has data to transmit. /RTS is a 5 volt tolerant input. The CH4390 presents data and command responses to the host system on the /RXD, Received Data, output. The host system presents commands to the CH43890 on the /TXD, Transmitted Data, input. /TXD is a 5 volt tolerant input. The CH4390 uses this active low output signal to activate Clear To Send on the serial port for flow control. The CH4390 activates Clear to Send when it has data to pass on the Received Data line. This is one of twelve programmable digital input/output signals to the CH4390. It is set has an input or output using the AT&D command. This is one of twelve programmable digital input/output signals to the CH4390. It is set has an input or output using the AT&D command. This is one of twelve programmable digital input/output signals to the CH4390. It is set has an input or output using the AT&D command. This is one of twelve programmable digital input/output signals to the CH4390. It is set has an input or output using the AT&D command. This is one of twelve programmable digital input/output signals to the CH4390. It is set has an input or output using the AT&D command. This is one of twelve programmable digital input/output signals to the CH4390. It is set has an input or output using the AT&D command. This is one of twelve programmable digital input/output signals to the CH4390. It is set has an input or output using the AT&D command. This is one of twelve programmable digital input/output signals to the CH4390. it is set has an input or output using the AT&D command. This is one of twelve programmable digital input/output signals to the CH4390. It is set has an input or output using the AT&D command. This is one of twelve programmable digital input/output signals to the CH4390. It is set has an input or output using the AT&D command. This is one of twelve programmable digital input/output signals to the CH4390. It is set has an input or output using the AT&D command. This is one of twelve programmable digital input/output signals to the CH4390. It is set has an input or output using the AT&D command. These pads provide connections to ground on the CH4390. A solid ground is essential for optimum performance. 2011 Cermetek Microelectronics, Inc. Page 8 Document No. 607-0033 Revision A (06/11) Cermetek Microelectronics, Inc CH4390 Wireless Sensor Module Table 3: CH4390 Electrical Specifications Vv 3.7 Volts If VCC exceeds the maximum rating, the CH4390 transmitter will shut down. mA cc

[ma [During Transmission OH OL IH IL Output Level Receive Sensitivity V Storage Temperature vcc Vin Operating Temperature Model Numbers Cermetek offers two variations of the CH4390. The variants differ only in their operating temperature range. Table 5 below lists the available CH4390 models. Table 5: CH4390 Model Numbers

| CH4390 | 900 MHz Frequency Hopping Transceiver NVRAM; Operating Temp 0C to 70C CH4390ET | 900 MHz Frequency Hopping Transceiver; NVRAM; Operating Temp -40C to 85C cr a SSS SSS SSD 2011 Cermetek Microelectronics, Inc. Page 9 Document No. 607-0033 Revision A (06/11) Cermete oelectronics, Inc CH4390 Wireless Sensor Module CH4390 Typical Connection Diagram ANTENNA CONNECTOR

(i FL-R-SMTO1) 3.3V DIGITAL INPUTS-

OUTPUTS ANALOG WHPUTS Notes:

1) The designated Antenna, Temple-Star C-522, must be used or the Modular certification of the CH4390 will be invalidated. 2) Capacitors C1 (0.01 pFd) and C2 (10 pFd) must be mounted as close to Pin 10 of the module as possible. 3) tis important that all ground pins be connected to a solid ground to prevent noise accumulation. re SS 2011 Cermetek Microelectronics, Inc. Page 10 Decument No. 607-0033 Revision A (06/11) Cermetek Microelectronics, Inc CH4380 Wireless Sensor Module 4) FCC PART 15 REGULATIONS The CH4390 has earned modular approval as described in FCC Part 15 rules. This certification means that no further transmitter certification is needed for systems using the CH4390. However, there are some restrictions on the use of a transmitter with modular approval. 1) Modular approval applies only to the transmitter. The final system may require verification of unintentional radiation. 2) When designing the CH4390 into a system, the designer must follow the application circuit in this data sheet and use a listed Antenna. Cermetek must approve for any changes or modifications to the application circuit. Failure to receive approval for modifications. from Cermetek could void certification of the nd product. 3) Any modification to the CH4390 after it leaves the factory is in violation of FCC Rules. 4) FCC rules require systems using the CH4390 to permanently affix an appropriate label on the outside of the finished equipment. The !abel must be clearly visible and include the information below. Contains Transmitter Module FCC ID: B46-CH4390 WARNING:

This device complies with part 15 of the FCC Rules. Its operation is subject to the following conditions:

(1) This device may not cause harmful interference.

(2) This device must accept any received interference including interference that may cause undesired operation. Warning: RF Exposure The CH4390 is approved for mobile and base station applications. A minimum of 20 centimeters should be maintained between the antenna and the equipment operator. To ensure compliance, operation at distances closer than those defined is not recommended. The Warming message below must be included in the User's Manual for the end product. To comply with FCC RF exposure requirements for mobile transmitting devices, this transmitter should only be used or installed at locations where there is at least a 20 cm separation distance between the antenna and all persons. Cermetek reserves the right to make changes in specifications at any time and without notice. The information furnished by Cermetek in this publication is believed to be accurate and reliable. However, Cermetek assumes no responsibility for its use, or for any infringements of patents or other rights of third parties resulting from its use. No license is granted under any patents or patent rights of Cermetek. Cermetek provides the user with a FCC (USA) Approved module. However, Cermetek does not have influence over nor knowledge of the specific user application environment. Therefore, for FCC Approved or Approvable devices, the user assumes all risk for maintaining compliance to registration. i Printed in U.S.A 374 TURQUOISE STREET | MILPITAS, CA 95035 | LOCAL: 408-942-2200 | FAX: 408-942-1346 CERMETEK WEB SITE: http://www.cermetek.com | EMAIL: sales@cermetek.com 2011 Cermetek Microelectronics, Inc. Page 11 Document No. 607-0033 Revision A (06/11)