Computime CT-EM2506 ZigBee Module User Manual CT EM2506 V1 2

Computime Limited ZigBee Module CT EM2506 V1 2

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CT EM2506 User Manual

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CT-EM2506 ZigBee Ready RF Transceiver Modules Computime Ltd. All rights reserved Confidential Page 1 of 16 ZigBee- Ready SoC RF Transceiver Modules CT- EM2506 Series Specification

CT-EM2506 ZigBee Ready RF Transceiver Modules Computime Ltd. All rights reserved Confidential Page 2 of 16 Table of Content 1. General Description ..................................................................................................................3 2. Applications..............................................................................................................................3 3. Features.....................................................................................................................................3 4. Absolute Maximum Ratings .....................................................................................................4 5. Recommended Operating Conditions .......................................................................................4 6. Electrical Specifications............................................................................................................4 7. Introduction...............................................................................................................................6 8. Typical application block..........................................................................................................6 9. Pin Assignment .........................................................................................................................7 10. Pin Description......................................................................................................................7 11. Block Diagram......................................................................................................................9 12. Circuit Description................................................................................................................9 13. SIF Module Programming and Debug Interface.................................................................10 14. Power Management.............................................................................................................10 15. RF Frequency, Output Power Levels and Data Rates .........................................................11 16. Antenna Design Considerations..........................................................................................12 17. Product Approvals...............................................................................................................13 18 Mechanical Dimension .......................................................................................................15 19 Ordering Information..........................................................................................................16 20 Document Revision History................................................................................................16

CT-EM2506 ZigBee Ready RF Transceiver Modules Computime Ltd. All rights reserved Confidential Page 3 of 16 ZigBee- Ready SoC RF Transceiver Modules1. General Description The CT-EM2506 SoC RF Transceiver Modules is a compact surface mounted module specially designed for Ember’s ZigBee™ protocol stack for wireless networks, EmberZNet, based on IEEE 802.15.4 standard in the 2.4GHz world-wide ISM band. It provides 16 channels and compliant PHY and MAC layers. The complete module is only 25.4 x 32.4 x 4.1mm. They both integrate a 2.4GHz, IEEE 802.15.4-compliant transceiver with a 16-bit XAP2b microprocessor and a FEM. They consist of integrated Flash and RAM memory and peripherals. A number of peripherals such as GPIO, UART, SPI, I2C, ADC, and general purpose timers are integrated to support user-defined applications. 2. Applications Home automation & building control Home appliances & alarms Monitoring of remote systems Lighting controls Sensor data capturing 3. Features  Integrated PCB trace antenna  IEEE 802.15.4 compliant PHY and MAC layer  12MHz XAP2b 16-bit microcontroller core  128kB Flash and 5kB RAM, emulation EEPROM  17 GPIO , 4 channel 12 bit ADC  UART, SPI, I2C and debug interfaces  External 32.768 kHz real time clock or internal RC oscillator for timer  16 channels in the 2.4 GHz ISM band  On-chip regulator for 2.7-3.6V operation, three sleep low power modes  -15dBm------20dBm output power, SW controlled

CT-EM2506 ZigBee Ready RF Transceiver Modules Computime Ltd. All rights reserved Confidential Page 4 of 16 4. Absolute Maximum Ratings Parameter Test Conditions Min. Max. Unit Regulator voltage (VDD_PADS) - 0.3 3.6 V Voltage on any GPIO[16:0], SIF_CLK, SIF_MISO, SIF_MOSI, nSIF_LOAD, OSC32A, OSC32B, nRESET - 0.3 VDD_PADS+ 0.3 V Storage temperature - 40 + 140 °C Under no circumstances should the absolute maximum ratings given above be violated. Stress exceeding one or more of the limiting values may cause permanent damage to the device. 5. Recommended Operating Conditions Parameter Test Conditions Min. Typ. Max. Unit Regulator input voltage (VDD_PADS) 2.7 3.6 Core input voltage (VDD_24MHZ, VDD_VCO, VDD_RF, VDD_IF, VDD_PADSA, VDD_FLASH, VDD_PRE, VDD_SYNTH, VDD_CORE) 1.7 1.8 1.9 V Temperature range - 40 + 85 °C 6. Electrical Specifications T = 25℃, VCC = 3.0V, fo = 2450Mhz, if nothing else stated. Parameter Min. Typ. Max Unit Condition / Note Operating frequency 2400 2483.5 MHz Programmable in 5 MHz steps for IEEE 802.15.4 compliance Number of channels 16 For IEEE 802.15.4 compliance Channel spacing 5 MHz For IEEE 802.15.4 compliance Input/output impedance 50 Ohm Data rate 250 kbit/s DSSS chip rate 2 Mc/s Frequency stability +/-40 ppm Transmit power -15 20 dBm Programmable from software

CT-EM2506 ZigBee Ready RF Transceiver Modules Computime Ltd. All rights reserved Confidential Page 5 of 16 Parameter Min. Typ. Max Unit Condition / Note Sensitivity -98 dBm PER = 1% Boost Mode Adjacent channel rejection +/-5 MHz 35/35 dB IEEE 802.15.4 signal at - 82dBm Adjacent channel rejection +/-10 MHz 40/40 dB IEEE 802.15.4 signal at - 82dBm Co-channel rejection -6 dB IEEE 802.15.4 signal at - 82dBmSupply voltage 2.7 3.6 V 36 mA Max RX sensitivity (normal mode)Current consumption RX mode 38 mA Max RX sensitivity (boost mode) Current consumption TX Mode 190 mA 20dBm output Quiescent current 5.0 μA Flash memory 128 KB RAM memory 5 KB Simulated EEPROM memory 8 KB MCU clock frequency 12 MHz RC OSCILATOR frequency 10 KHZ MCU low frequency crystal 32.768 kHz

CT-EM2506 ZigBee Ready RF Transceiver Modules Computime Ltd. All rights reserved Confidential Page 6 of 16 7. Introduction The CT-EM2506 series of modules are specially designed for ZigBee application. They provide a fast jump start design for system integrators or electronic designers wishing to use ZigBee wireless technologies. The module contains qualified RF hardware and enough processor power to run the EmberZNet stack or other ZigBee network stack (depending on version), making it a powerful platform for building wireless networking products. ZigBee Coordinators (ZC), ZigBee Routers (ZR), and ZigBee End Devices (ZED) are all supported and are programmed onto the module together with a custom application. Minimal RF design experience is needed to use CT-EM2506 modules. 8. Typical application block Ember EM250 Temp. Sensor Hum. Sensor VDD_PADS=2.7-3.6V 4 General A/D Debug and programming interface SIF PIN MCU and/or Peripheral Equipment SIF PIN GPIO PIN FEM

CT-EM2506 ZigBee Ready RF Transceiver Modules Computime Ltd. All rights reserved Confidential Page 7 of 16 9. Pin Assignment TOP VIEW 10. Pin Description Pin# Signal Direction Description 1 CLK DI SIF Interface clock 2 MISO DO SIF Interface master in/slave out 3 MOSI DI SIF Interface master out/slave in 4 LOADB DI/DO SIF Interface load strobe 5 GPIO16 DI/DO General Purpose Digital I/O, Output B of Timer 1, Capture Input B of Timer 2, or Source D Interrupt 6 GPIO15 DI/DO General Purpose Digital I/O, Output A of Timer 1, Capture Input A of Timer 2, or Source C Interrupt 7 GPIO14 DI/DO General Purpose Digital I/O, Output B of Timer 2, Capture Input B of Timer 1, or Source B Interrupt 8 GPIO13 DI/DO General Purpose Digital I/O, Output A of Timer 2, or Capture Input A of Timer 1 9 GROUND GND Ground

CT-EM2506 ZigBee Ready RF Transceiver Modules Computime Ltd. All rights reserved Confidential Page 8 of 16 10 GROUND GND Ground 11 GROUND GND Ground 12 GROUND GND Ground 13 IDLE_EN I Enable the FEM in deep sleep mode , Active high, in other state, set it in low level 14 VBRD PI Power Supply Input 15 RSTB DI Reset, active low 16 GPIO11 DI/DO General Purpose Digital I/O, SC1 UART CTS, SC1 SPI master clock, or Capture Input A of Timer 2 17 GPIO12 DI/DO General Purpose Digital I/O, SC1 UART RTS, or Capture Input B of Timer 2 18 GPIO0 DI/DO General Purpose Digital I/O, SC2 SPI MOSI, or Capture Input A of Timer 1 19 GPIO1 DI/DO General Purpose Digital I/O, SC2 SPI MISO, SC2 I2C SDA, or Capture Input A of Timer 2 20 GPIO2 DI/DO General Purpose Digital I/O, SC2 SPI master clock, SC2 I2C SCL, or Capture Input B of Timer 2 21 GPIO3 DI/DO General Purpose Digital I/O, SC2 SPI slave select, or Capture Input B of Timer 1 22 GPIO4 DI/DO/AI General Purpose Digital I/O, ADC Input 0, or PTI frame signal 23 GPIO5 DI/DO/AI General Purpose Digital I/O, ADC Input 1, or PTI data signal 24 GPIO6 DI/DO/AI General Purpose Digital I/O, ADC Input 2, Timer 2 Clock Input, or Timer 1 Enable 25 GPIO7 DI/DO/AI General Purpose Digital I/O, ADC Input 3, Timer 2 Clock Input, External regulator open collector output 26 GPIO8 DI/DO/AO General Purpose Digital I/O, ADC Reference Output, Timer 1 Clock Input, Timer 2 Enable, or Source A Interrupt 27 GPIO9 DI/DO General Purpose Digital I/O, SC1 TXD, SC1 MO, SC1 I2C Data, or Capture Input A of Timer 1 28 GPIO10 DI/DO General Purpose Digital I/O, SC1 RXD, SC1 MI, SC1 I2C Clock, or Capture Input B of Timer 1

CT-EM2506 ZigBee Ready RF Transceiver Modules Computime Ltd. All rights reserved Confidential Page 9 of 16 11. Block Diagram 12. Circuit Description The module contains an IEEE 802.15.4 compliant SoC RF transceiver, internal memory, high speed oscillator, RC oscillator, an FEM . The module is intended to run the EmberZNet ZigBee software or other ZigBee network implementation, depending on the specific version. The application software together with the ZigBee protocol software stack can be programmed in Flash memory through the SIF module, using an evaluation board from Ember InSight Desktop. To support user-defined applications, a number of peripherals such as GPIO, UART, SPI, I2C, ADC, and general-purpose timers are integrated. Also, an integrated voltage regulator, power-on-reset circuitry, sleep timer, and low-power sleep modes are available. The deep sleep mode draws less than 5μA , allowing products to achieve long battery life. For further details on the SoC transceiver (Ember EM250), please consult the data sheet at http://www.ember.com Digital/Analog I/O UART interface SPI interface I2C interface 16 Bit MCU User Application ZigbeeTM Network IEEE 802.15.4 MAC IEEE 802.15.4 RF Transceiver 2.7 – 3.6V 2.7 – 3.6V RF Frond End

CT-EM2506 ZigBee Ready RF Transceiver Modules Computime Ltd. All rights reserved Confidential Page 10 of 16 13. SIF Module Programming and Debug Interface SIF is a synchronous serial interface developed by Cambridge Consultants Ltd. It is the primary programming and debug interface of the CT-EM2506. The SIF module allows external devices to read and write memory-mapped registers in real-time without changing the functionality or timing of the XAP2b core. The SIF interface provides the following:  IC production test (especially analog)  PCB production test  XAP2b code development  Product control and characterization The pins are:  SIF_LOADB  SIF_CLK  SIF_MOSI  SIF_MISO The maximum serial shift speed for the SIF interface is 48MHz. SIF interface accesses can be initiated even when the chip is in idle and deep sleep modes. An edge on SIF_LOADB wakes the chip to allow SIF cycles. 14. Power Management The CT-EM2506 supports three different power modes: processor ACTIVE, processor IDLE and DEEP SLEEP. The IDLE power mode stops code execution of the XAP2b until any interrupt occurs or an external SIF wakeup command is seen. All peripherals including the radio continue to operate normally. The DEEP SLEEP power mode powers off most of the module but leaves the critical chip functions, such as the GPIO pads and RAM powered by the High Voltage Supply (VDD_PADS). The module can be woken by configuring the sleep timer to generate an interrupt after a period of time, using an external interrupt, or with the SIF interface. Activity on a serial interface may also be configured to wake up the module, though actual reception of data is not re-enabled until the module has finished waking up. Depending on the speed of the serial data, it is possible to finish waking up in the middle of a byte. Care must be taken to reset the serial interface between bytes and discard any garbage data before the rest. Another condition for wakeup is general activity on GPIO pins.

CT-EM2506 ZigBee Ready RF Transceiver Modules Computime Ltd. All rights reserved Confidential Page 11 of 16 15. RF Frequency, Output Power Levels and Data Rates The following table shows the RF channels as defined by the IEEE 802.15.4 RF channel Frequency 11 2405MHz 12 2410MHz 13 2415MHz 14 2420MHz 15 2425MHz 16 2430MHz 17 2435MHz 18 2440MHz 19 2445MHz 20 2450MHz 21 2455MHz 22 2460MHz 23 2465MHz 24 2470MHz 25 2475MHz 26 2480MHz The output power level of EM250 can be configured in the range -32 to 3dBm and the gain of FEM is 17dB, So the module output can controlled in range -15 to 20dBm. The RF transceiver uses direct sequence spread spectrum (DSSS) with a raw data rate of 250 kbit/s. The modulation format is Offset – Quadrature Phase Shift Keying (O-QPSK). It is robust even under noisy environments when sharing the same frequency band with other applications. Note: The output power of EM250 should be configured lower than -19dBm for the channel 2480MHz to comply FCC. The use of RF frequencies and maximum allowed RF power should according to different national regulations. The CT-EM2506 is complying with the applicable regulations for the world wide 2.4GHz ISM band. [Subject to final approval: Specifically it complies with the European Union R&TTE directive meeting EN 300 328 and EN300 440 class 2. It also meets the FCC CFR47 Part15 regulations for use in the US and the ARIB T-66 for use in Japan.]

$CT-EM2506 ZigBee Ready RF Transceiver Modules Computime Ltd. All rights reserved Confidential Page 12 of 16 16. Antenna Design Considerations The CT-EM2506 module includes an integrated PCB trace antenna. An optional MMCX connector can be specified, enabling connection to a 50-ohm external antenna of the user’s choice.. The PCB antenna employs an F-Antenna topology that is compact and supports an omni-directional radiation pattern. To maximize antenna efficiency, an adequate ground plane must be provided on the host PCB. If positioned correctly, the ground plane on the host board under the module can contribute significantly to antenna performance. The position of the module on the host board and overall design of the product enclosure contribute to antenna performance. Poor design effects radiation patterns and can result in reflection, diffraction, and/or scattering of the transmitted signal. Here are some design guidelines to help ensure antenna performance: • Never place the ground plane or route copper traces directly underneath the antenna portion of the module. • Never place the antenna close to metallic objects. • In the overall design, ensure that wiring and other components are not placed near the antenna. • Do not place the antenna in a metallic or metallized plastic enclosure. • Keep plastic enclosures 1cm or more from the antenna in any direction. Test at 2440MHZ __ Vertical Polarization Gain (dBi) Avg : -14.8 --- Horizontal Polarization Gain (dBi) Avg : -3.4$

Computime CT-EM2506 ZigBee Module User Manual CT EM2506 V1 2

Computime Limited ZigBee Module CT EM2506 V1 2

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