INDUSTRIAL BLUETOOTH™ OEM Serial Port Adapter™ cB-0902 Electrical & Mechanical Datasheet
OEM Serial Port Adapter™ cB-0902 Electrical & Mechanical Datasheet
Copyright © 2005 connectBlue AB. The contents of this document can be changed by connectBlue AB without prior notice and do not constitute any binding undertakings from connectBlue AB. connectBlue AB is not responsible under any circumstances for direct, indirect, unexpected damage or consequent damage that is caused by this document. All rights reserved. Release: 2005-11 Document version: 0.4 Draft 1 Document number: cBProduct-0503-01 Printed in Sweden.
Contents 1 Introduction 1.1 1.2 1.3 1.4 5 Related Documents ...........................................................................5 Product Variants ................................................................................6 cB-0902..............................................................................................7 Block Diagram cB-0902 .....................................................................8 2 Electrical Interface and Connectors 2.1 2.2 2.3 2.4 2.5 9 Pin Numbering .
1 Introduction 1.1 Related Documents There are some documents related to the Serial Port Adapter: - The Serial Port Adapter AT Commands document contains a description of the AT commands supported in the Serial Port Adapter. It also contains information on how to use the AT commands to create Bluetooth applications. - The OEM Serial Port Adapter Electrical & Mechanical Datasheet (this document) contains important information about the OEM Serial Port Adapter.
1.2 Product Variants This Electrical and Mechanical datasheet contains information about the 16 variants of OEM Serial Port Adapters based on the PCB cB-0902. This document makes references to the OEM Module ID, not the Product Name (see Table 1). Table 1: Product variants Class 1 +7dBm External antenna Class 1 +7dBm Internal antenna Product Name OEM Module ID / Bluetooth Type FCC Type No.
1.3 cB-0902 cB-0902 is a small size Bluetooth module based on the Phillips BGB203 system in package (SiP). The BGB203 has on chip SRAM and FLASH stacked in the same package. The modules are available in many variants with different antenna / connectors and output power combinations. See Picture 1 - Picture 3 for some of the available models. All models are described in Table 1. The cB-0902 has an RS232 interface and is fully compatible with the connectBlue 2:nd Generation Class 2 Serial Port Adapter.
1.4 Block Diagram cB-0902 Figure 1: Block diagram of cB-0902 Version 0.
2 Electrical Interface and Connectors This section describes the signals available on the module interface connectors. There are four ways to connect to the OEM Serial Port Adapter: • Via the 2x10-pin 2mm header connector J1 (see Picture 4). • Via the 2x20-pin 1mm pitch board-to-board (one piece part) connectors, J2 through J3. The J2 to J3 connectors on the OEM Serial Port Adapter exist on the module only as a mating PCB-layout pattern (see Picture 5). See Section 5.2 for more information.
2.1 Pin Numbering 2.1.1 J2 and J3 Figure 2: Bottom view of the PCB with the pinning of the J2 and J3 pads connector. 2.1.2 Flexfilm J7 Figure 3: Top view of the PCB with the pinning of the J7 connector. 2.1.3 Pinlist J1 and JST 6-pol J8 Figure 4: Top view of the PCB with the pinning of the J1 and J8 connector. Version 0.
2.2 Pin Description 2.2.1 J1 & J2 Connector Table 2: Signals on J1 and J2. J1&J2 Pin Name Pin Nr Signal Name Signal Level Type Description 1-2 VSS Ground Ground GND 3-4 VCC_3V3 Power 3.3V 3.0 – 6.0 VDC for CB-OEMSPA312 modules 3.3 – 6.
J1&J2 Pin Name Pin Nr Signal Name Signal Level Type Description 12 Function switch CMOS In Used for the “Connect on external signal” function, see the Serial Port Adapter AT command Specification for more information on the Function switch. Switch-0 See section A.2.3.3 for design examples. 13 GREEN/ Switch-1 Green LED output and CMOS Restore switch In/Out This signal is multiplexed: GREEN: Logic Green LED Signal (see Chapter 3, Table 13). Not valid until 500ms after startup.
2.2.2 J3 Connector Table 3: Signals on J3 J3 Pin Nr Pin Name Signal Name Signal Level Type 1-8 Description Reserved, do not connect. 9 SerialSelect-0 Serial Select 0 CMOS Out Control signal for external serial transceivers. See section A.2.2.4 for more info. 10 SerialSelect-1 Serial Select 1 CMOS Out Control signal for external serial transceivers. See section A.2.2.4 for more info. 11-18 19 Reserved, do not connect. RESET Hardware reset CMOS In Active low.
2.2.3 J7 Connector (Flexfilm) NOTE! The physical serial interface on J7 is RS232, which is different compared to the cBOEMSPA311i/x and cB-OEMSPA331i/x products. Table 4: Signals on J7 J7 Pin Nr Pin Name Signal Name Signal Level Type Description 1 RESET Hardware reset CMOS In Active low. Must be open drain collector. See section 2.4 for design examples. 2 DSR Data Set Ready CMOS In 3 VSS Ground Ground GND 4 VCC_3V3 Power 3.3V 3.0 – 6.0 VDC for CB-OEMSPA312 modules 3.3 – 6.
J7 Pin Nr Pin Name Signal Name Signal Level 7 GREEN/ Switch-1 Green LED output and CMOS Restore switch Type Description In/Out This signal is multiplexed: GREEN: Logic Green LED Signal (see Chapter 3, Table 13). Not valid until 500ms after startup. Switch-1: If the level on this pin is set to Low the units goes back to default serial settings. The “Restore Default” input is only active during the first 500ms after startup.
2.2.4 J8 Connector (JST 6-pol) NOTE! The physical serial interface on J8 is RS232, which is different compared to the cBOEMSPA311i/x and cB-OEMSPA331i/x products. Table 5: Signals on J8 J8 Pin Nr Pin Name Signal Name Signal Level Type Description 1 VSS Ground Ground GND 2 VCC_3V3 Power 3.3V 3.0 – 6.0 VDC for CB-OEMSPA312 modules 3.3 – 6.
2.3 Characteristics The cB-0902 board is designed to be fully interchangeable. If the host product has space for the board it is possible to choose freely between a cB-OEMSPA312i/x or cB-OEMSPA332i/x device without any change of the host product. If you design your power supply for cBOEMSPA332i/x the modules will be fully interchangeable. The cB-0902 module has a linear power supply, which means that the current is constant if the voltage supply is changed. See Table 9.
2.3.1.2 cB-OEMSPA332i/x products Table 8: Power supply Symbol Parameter Value Unit VCC_3V3 Power supply (Unregulated*) Min 3.3 VDC Max 6.0 VDC * The module is equipped with an internal linear voltage regulator. Table 9: Current consumption Symbol Mode ICC Not connected Stop mode not enabled.
2.3.2 Input/Output signals 2.3.2.1 cB-OEMSPA312i/x products Table 10: Input/output signals Symbol Parameter VIN Low Logic LOW level input voltage on all logic Min input pins except Switch-0 Max -0.4 V 0.80 V Logic LOW level input voltage Switch-0 Min -0.4 V Max 0.15 V Min 2.05 V Max 3.35 V VIN High Value Logic HIGH level input voltage Unit VOUT Low Logic LOW level output voltage Max 0.4 V VOUT High Logic HIGH level output voltage Min 2.
2.3.
2.4 Hardware Reset A hardware RESET input is available on the J3, J6 and J7 connectors (see section 2.1). An external reset source must be open drain collector, see section A.2.4 for design examples. The RESET pin is internally pulled-up with 120kΩ. 2.5 Power Control For more information about “Stop Mode” and other low power modes, see the Serial Port Adapter AT command Specification. Version 0.
3 Operating Status The module can be in different modes (see the Serial Port Adapter AT command Specification for more information about the modes) and the RED, GREEN and BLUE signals can be used to detect or indicating the status, see Table 13. The LED signals are active LOW.
4 Antennas There are 2 different antenna options available: • An internal surface mounted (SMD) antenna. • An external antenna should be connected to a U.FL connector. Many different external antennas are available. See section 5.1 for more information on antenna placement. This chapter gives an overview of the different antenna options. 4.1 Surface Mounted Antenna (Internal) The unit cannot be mounted in a metal-shielded enclosure with this antenna.
4.2 External antennas The external antennas are connected to the board through a U.FL connector. Some of the antennas are connected directly to the U.FL connector of the board and some are connected using an SMA connected through a short U.FL to SMA adapter cable. 4.2.1 Antenna Accessories Part Number cB-ACC-18 Name U.FL to SMA adapter cable Connector U.FL and SMA female Cable length 120 mm Cable loss Less than 0.5dB Comment The SMA connector may be mounted in a panel.
Part Number cB-ACC-27 Name WCR-2400-IP04 Manufacture Centurion Type ½ wave dipole Polarization Vertical Gain +2.0dBi Size 108 mm (Straight) Connector U.FL connector Comment To be mounted on the U.FL connector on the PCB. Approval Approved for use in the US and Canada Part Number cB-ACC-17 Name Reel planTec Bluetooth m70 Manufacture Reel Size (∅xH) 75x20 mm Gain +1dBi Mounting M16x13.
Part Number cB-ACC-23 Name Mobile Mark Stub Manufacture Mobile Mark Communications Antennas Type ¼ wave dipole Polarization Vertical Gain 0dBi Connector SMA male Comment To be mounted on the U.FL to SMA adapter cable Approval Not approved for use in the US and Canada. Part Number cB-ACC-21 Name Rugged SMA Manufacture Radiall/Larsen Type ½ wave dipole Polarization Vertical Gain 2dBi Connector SMA male Comment To be mounted on the U.
5 Mounting Information 5.1 Board Outlines 5.1.1 cB-0902 Figure 5: cB-0902 dimensions [mm]. The J2 pads are longer to fit both the single and double row connectors (see section 5.2). Version 0.
5.1.2 Mounting Holes There are 2 x 2.3mm mounting holes on cB-0902. The reasons for the 2.3mm holes are that the threaded M2 holes on the single and double row connectors (see section 5.2.1) are not aligned. The outer tangents of the 2.3mm holes align the module if the single row connectors are used and the inner if double row connectors are used (see Figure 6). Choose the outer tangent (CC distance 27.24mm) if the module is aligned and mounted with some other technique based on M2 screws (e.g.
5.2 Using the J2/J3 Board-to-Board Connectors The board-to-board connector should be a 1mm pitch one-piece part connector. The recommended manufacture is Samtec with many connector options available; see section 5.2.1.1 and 5.2.1.2. Chapter 2 contains more information about the connector and the electrical interface. 5.2.1 Suitable One-Piece Part Connectors 5.2.1.1 Single row connectors These connectors are a single row connector and can be used if only J2 is needed.
Figure 7: Host PCB layout [mm] for single row connector. Version 0.
5.2.1.2 Double row connectors This connector is a double row connector and can be used if both J2 and J3 are needed. This connector has a height of 3.0mm and this has to be considered if components are to be mounted on the motherboard under the OEM Serial Port Adapter board. The connector is also available with a height of 6.0mm and 10.0mm (The FSI-120 serie from Samtec). There are alignment pins on the bottom side of the connector.
Figure 8: Host PCB layout [mm] for double row connector. Version 0.
5.3 Using Press-Fit Nuts for Mounting the Module A press-fit nut is pressed into the PCB from the bottom side with a special press tool. M2 sized press-fit nuts are suitable for the modules (see Figure 7 and Figure 8) and are manufactured by PEM Fastening Systems (www.pemnet.com), part no KFS2-M2 (see Figure 9). Be careful with the distance between the nuts regarding alignment, see section 5.1.2. Figure 9: KFS2-M2 press-fit nut.
6 Bluetooth Information (In progress) 6.1 General information In the tables below you can find information about Bluetooth properties. The cB-0902 module is available in two output power versions both Bluetooth Class 1. The output power of the cB-OEMSPA312i/x device is max +7dBm (5mW) and the output power of the cBOEMSPA332i/x device is max +16.9dBm (49mW).
6.2 Bluetooth Qualification information All products based on the PCB cB-0902-02 have been qualified according to the Bluetooth specification 2.0. Table 17 - Bluetooth Qualification information Module Bluetooth specification QPLN reference Qualification date cB-OEMSPA312i /x 2.
7 Regulatory Information 7.1 Declaration of Conformity We, connectBlue AB, of Norra Vallgatan 64 3V SE-211 22 Malmö, Sweden declare under our sole responsibility that our products: cB-OEMSPA312i/x (cB-0069, cB-0070, cB-0071, cB-0072, cB-0073, cB-0074, cB-0075, cB-0076), OEM Module Adapter III (cB-0068). to which this declaration relates, conforms to the following product specifications: R&TTE Directive 1999/5/EC EN 300 328 V1.6.1 (2004-11) EMC Directive: 89/336/EEC EN 301 489-1 V1.4.
7.2 FCC, IC and Safety Compliance See Table 1 for information about the different product variants. 7.2.1 Compliance for cB-0902-0201 7.2.1.1 FCC Statement for cB-0902-0201 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.
7.2.1.3 Safety The unit must be supplied by a limited power source in according to EN 60950-1. 7.2.1.4 Labeling Requirements for End Product For an end product using the product cB-0902-0201 there must be a label containing, at least, the following information: This device contains FCC ID: PVH090202S IC: 5325A-090202S The label must be affixed on an exterior surface of the end product such that it will be visible upon inspection in compliance with the modular approval guidelines developed by the FCC.
7.3 UL listing information If a customer intends to UL list a product including any of the Bluetooth modules based on the PCB cB-0902-02 this information is useful: The printed circuit board if produced according to the following specification: • UL recognized ZPMV2 min. 105 °C flame class V-0 or better. 7.
Appendix A - Application Notes Usually only a subset of the available functionality is of interest to the designer. In addition, depending on the host system, the electrical interface can be designed in many ways. The designer can use the step-by-step guide in this chapter as an aid in the design process. A.1 Step-by-Step Guide Table 18: Step-by-step guide with Yes and No answers.
Question Yes Do you want to manually reset the module? See section A.2.4 for electrical design. Use a double row connector. See section 5.2.1.2. Version 0.
A.2 Design Examples This section contains design examples for all interfaces on J1, J2, J3, J7 and J8. The connector type that suits a specific application depends on the needed signal and the preferred interface type (wires, flexfilm, board-to-board or SMD). A.2.1 Logic Levels A 3.0/3.3V host system can be connected directly to the logic level pins (BLUE, UART-TxD / UART-RxD etc). A serial 100Ω resistor shall be used (see Figure 10) for protection, see Table 11 for logic levels characteristics.
A.2.2 Serial Interface The serial interface can operate in RS232 or Logic level mode, see section A.2.3.2. The Logic level mode could be used if the module is connected to an external CPU or if the physical interface should be another then the internal RS232 likes RS422 (see section A.2.2.3). The signal excluding the RxD and TxD signals available on the serial interface are: CTS (Clear To Send) and RTS (Request To Send) are used for hardware flow control.
A.2.2.2 External RS232 driver The modules are fully compatible with the EIA-232 standard and can be connected to all RS232 transceivers. Speed and current consumption depends on the host system RS232 transceiver. See Figure 15 for a complete example. Not used functionality can be left unconnected; see Section A.2.2. Figure 15: A complete RS232 interface. Version 0.
A.2.2.3 External RS422 transceiver An external RS422 driver could be used in a point-to-point (full duplex) application (see Figure 16). The Logic level mode needs to be enabled when using an external transceiver. See section A.2.3.2 for information on how to select Logic level mode. Note! It is very important to set the module in logic level mode properly when interfacing with logic levels; collision with the internal RS232 transceiver could damage the module. Figure 16: A complete RS422 interface.
A.2.2.4 External RS422/RS485 transceiver A complete RS422/RS485 transceiver design connected to a bus system need to control the enable signals of the transceiver. The SerialSelect signals are used for this purpose (see Table 19). The Logic level mode needs to be enabled when using an external transceiver. See section A.2.3.2 for information on how to select Logic level mode.
A.2.3 LED and Switch Design A.2.3.1 BLUE Signal The BLUE logic LED signal is not multiplexed with any other functionality, which makes the design more straightforward (for more information see Figure 18). There are two important notes: - A blue LED requires about 3.5V forward voltage drop (cannot be used in a 3.3V system). - The BLUE signal can be used to detect if the module is connected or not. The BLUE signal flashes when the module is sending and receiving data (see Chapter 3, Table 13).
A.2.3.2 RED/Mode Signal The RED/Mode signal is a multiplexed signal: - RED - Logic red LED signal (see Chapter 3, Table 13). Becomes valid 500ms after start up. - Mode - The module reads the status of the signal during startup to decide if the serial interface shall be RS232 (HIGH) or logic UART (LOW) levels. The input signal must be stable for the first 500ms after startup (after reset/power on reset). The signal is internally pulled-up (50kΩ) for RS232 as default.
Figure 24: The mode pin is pulled-down (10kΩ) in UART mode. GREEN/Switch-1 signal The GREEN/Switch-1 signal is a multiplexed signal: - GREEN - Logic green LED signal (see Chapter 3, Table 13). Becomes valid 500ms after start up. - Switch-1 - The module reads the status of the signal at startup to decide if the serial interface settings shall be restored (LOW) (see the Serial Port Adapter User Manual for more details).
Figure 27: No restore switch used but a green LED in a 3.3V host system. The status of the signal can also be used as input to a host controller. Figure 28: No restore switch used but a green LED in a 5V host system. The status of the signal can also be used as input to a host controller. A serial resistor to the restore switch must be used to prevent a short circuit when the GREEN/Switch-1 pin is in output HIGH state and the switch is pressed (see Figure 29).
A.2.4 Reset The RESET pin can be connected to an external reset source, see Figure 33 for a switch example. If the reset signal is connected to an output signal it must be an open drain collector, see Figure 34. Notice the capacitive load on the RESET pin in Table 11, section 2.3. The RESET pin can be left unconnected if not used. Figure 33: A reset switch. Figure 34: Design of an open collector reset from an active high output. Version 0.
A.2.5 A Complete 5V Host System Interface This is a complete 5V host system interface example with an RGB LED and two switches (except the serial interface, see section A.2.2 for information). The design is based on the LM339 Quad OP-amp instead of logic gates. Figure 35: A complete 5V host interface with operational amplifier Version 0.
