ZigBit™ 700/800/900 MHz Wireless Modules ....................................................................................................................
ZigBit™ 700/800/900 MHz Wireless Modules 1-2 8227C–MCU Wireless–06/09
Section 1 1.1 Summary............................................................................................................................ 1-1 1.2 Applications........................................................................................................................ 1-1 1.3 Key Features...................................................................................................................... 1-2 1.4 Benefits ..............................................................
Section 1 Introduction 1.1 Summary ZigBit ™ 900 is an ultra-compact, extended range, low-power, high-sensitivity 784/868/915 MHz IEEE 802.15.4/ZigBee® OEM module, based on the innovative Atmel’s mixed-signal hardware platform. It is designed for wireless sensing, control and data acquisition applications. ZigBit modules eliminate the need for costly and time-consuming RF development, and shortens time to market for a wide range of wireless applications.
Introduction 1.3 Key Features • • • • • • • • • • • • • 1.4 Ultra compact size (18.8 x 13.
Introduction 1.6 GPIO General Purpose Input/Output HVAC Heating, Ventilating and Air Conditioning HW Hardware I2C Inter-Integrated Circuit IEEE Institute of Electrical and Electrionics Engineers IRQ Interrupt Request ISM Industrial, Scientific and Medical radio band JTAG Digital interface for debugging of embedded device, also known as IEEE 1149.1 standard interface MAC Medium Access Control layer MCU Microcontroller Unit.
Introduction [4] Atmel 8-bit AVR Microcontroller with 64K/128K/256K Bytes In-System Programmable Flash. 2549F AVR 04/06 [5] Atmel AT86RF212 Low Power 800/900 MHz Transceiver for IEEE 802.15.4b, Zigbee, and ISM Applications. Preliminary specification [6] Ultra Small Surface Mount Coaxial Connectors - Low Profile 1.9mm or 2.4mm Mated Height. http://www.hirose.co.jp/cataloge_hp/e32119372.pdf [7] ZigBit 900 Development Kit. User's Guide. MeshNetics Doc. S-ZDK-451~03 TBD [8] IEEE Std 802.15.
Section 2 Zigbit™700/800/900 MHz Wireless Modules Overview 2.1 Overview ZigBit 900 is an extended-range low-power, a low-power, high-sensitivity IEEE 802.15.4/ ZigBee-compliant OEM module, which occupies less than a square inch. Based on a solid combination of Atmel’s latest MCU Wireless hardware platform [5], power amplifier and low-noise amplifier, the ZigBit 900 offers superior radio performance, ultra-low power consumption and exceptional ease of integration. Figure 2-1.
Zigbit™700/800/900 MHz Wireless Modules Overview ZigBit 900 modules come bundled with BitCloud, a 2nd generation embedded software stack from Atmel. BitCloud is fully compliant with ZigBee PRO and ZigBee standards for wireless sensing and control [8], [9], [10] and it provides an augmented set of APIs which, while maintaining 100% compliance with the standard, offer extended functionality designed with developer's convenience and ease-of-use in mind.
Section 3 Specifications 3.1 Electrical Characteristics 3.1.1 Absolute Maximum Ratings Table 3-1. Absolute Maximum Ratings(1)(2) Parameters Min Max Voltage on any pin, except RESET with respect to Ground -0.5V VCC + 0.5V DC Current per I/O Pin 40 mA DC Current DVCC and DGND pins 300 mA Input RF Level +5 dBm Notes: 1. Absolute Maximum Ratings are the values beyond which damage to the device may occur. Under no circumstances must the absolute maximum ratings given in this table be violated.
Specifications 3.1.3 RF Characteristics Table 3-3. RF Characteristics Parameters Condition Frequency Band Range Unit 779 to 787 868 to 868.
Specifications 3.1.5 Module Interfaces characteristics Table 3-5. Module Interfaces characteristics Parameters Condition UART Maximum Baud Rate ADC Resolution/ Conversion Time In the single conversion mode ADC Input Resistance ADC Input Voltage 2 I C Maximum Clock -10/ 5 mA, VCC=3V Real Time Oscillator Frequency 3.2 Unit 38.4 kbps 10/200 Bits/µs >1 ADC Reference Voltage (VREF) GPIO Output Voltage (High/Low) Range M 1.0 to VCC - 3 V 0 - VREF V 222 kHz 2.3/ 0.5 V 32.
Specifications 3.3 Pin Configuration Figure 3-2. ATZB-900-B0 Pinout Table 3-6.
Specifications Table 3-6. Pin descriptions (Continued) Connector Pin Pin Name Description I/O Default State after Power on 16 UART_CTS CTS output (Clear To send) for UART hardware flow control.
Specifications 5. It is strongly recommended to avoid assigning an alternate function for OSC32K_OUT pin because it is used by BitCloud. However, this signal can be used if another peripheral or host processor requires 32.768 kHz clock, otherwise this pin can be disconnected. 6. Normally, JTAG_TMS, JTAG_TDI, JTAG_TDO, JTAG_TCK pins are used for on-chip debugging and flash burning. They can be used for A/D conversion if JTAGEN fuse is disabled. 7.
Specifications Figure 3-3. 3.4 Typical Reference Schematic Mounting Information The below diagrams show the PCB layout recommended for ZigBit 900 module. Neither via-holes nor wires are allowed on the PCB upper layer in area occupied by the module. As a critical requirement, RF_GND pins should be grounded via several holes to be located right next to the pins thus minimizing inductance and preventing both mismatch and losses.
Specifications Figure 3-4. 3.5 ATZB-900-B0 PCB Recommended Layout, Top View Soldering Profile The J-STD-020C-compliant soldering profile is recommended, as given below. Table 3-7. Soldering Profile(1) Profile Feature Average ramp-up rate (217 °C to peak) 3 °C/s max. Preheat temperature 175 °C ± 25 °C 180 s max. Temperature maintained above 217 °C 60 s to 150 s Time within 5 °C of actual peak temperature 20 s to 40 s Peak temperature range 6 °C/s max. Ramp-down rate Note: 3.
Specifications Figure 3-5. FCC/CE compliant RF reference design with RP-SMA connector recommended for ATZB-900-B0 Multiple factors affect proper antenna match, hence, affecting the antenna pattern. The particular factors are the board material and thickness, shields, the material used for enclosure, the board neighborhood, and other components adjacent to antenna. 3.6.1 General recommendations Metal enclosure should not be used. Using low profile enclosure might also affect antenna tuning.
Section 4 Ordering Information 4.1 Ordering Information Part Number Description ATZB-900-B0R(1) 783/868/915 MHz IEEE802.15.4/ZigBee Wireless Module w/ Balanced RF Port Note: 1. Tape and Reel quantity: 200 Section 5 Agency Certifications 5.1 UNITED STATES (FCC) This equipment complies with Part 15 of the FCC rules and regulations. To fulfill FCC Certification requirements, an OEM manufacturer must comply with the following regulations: 1.
5.2. EUROPEAN UNION (ETSI) The ATZB 900 B0 Modules has been certified for use in European Union countries. If the ATZB 900 B0 Modules are incorporated into Headquarters International a product, the manufacturer must ensure compliance of the final product to the European harmonized EMC and low voltage/safety standards. A Declaration of Conformity must be issued for each of these standards and kept on file as described in Annex II of the Atmel Japan Atmel Europe Atmel Asia Atmel Corporation R&TTE Directive.
