Page 1 RFM67W RFM67W ISM TRANSMITTER MODULE V1.2 Features GENERAL DESCRIPTION APPLICATIONS z Remote Keyless Entry (RKE) The RFM67W is a transmitter z Remote Control / Security module which can operate in the Systems 315, 433, 868 and 915 MHz z Voice and Data RF licence free ISM bands. Communication Links The transmitter module has two RFM67W z Process and building / home modes of operation, a control conventional MCU controlled z Active RFID mode and a stand-alone z AMR / AMI Platforms mode which enables the RFM67W to download KEY PRODUCT FEATURES NOTE: configuration and messages from In order to better use RFM67W 2 z +17 dBm to -18 dBm an E PROM in response to a user modules, this specification also Programmable output power. input. involves a large number of the z Bit rates up to 600 kbits / sec. parameters and functions of its Stand-alone mode makes the z FSK, GFSK, MSK, GMSK and core chip RF67 s,including those RFM67W ideal for miniaturized or OOK modulation. IC pins which are not leaded low cost remote keyless entry z Stand-alone mode: No need out. All of these can help (RKE) applications. It also offers for a host MCU. customers gain a better the unique advantage of narrow- z Consistent RF performance understanding of the band and wide-band over a 1.8 to 3.7 V range. performance of RFM67W communication in a range of z Low phase noise (-95 dBc/Hz modules, and enhance the modulation formats. PLL at 50 kHz) with automated application skills. calibration and fully integrated The RFM67W offers high RF VCO and loop filter. output power and channelized z On chip RC timer for timer operation suited for the European /wake-up applications. (ETSI EN 300-220-1), North z Low battery detection. American (FCC part 15.231, z Module size:19.7X16mm 15.247 and 15.249) and z Low cost Japanese (ARIB T-67) regulatory standards. Page 1 Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: sales hoperf.com RFM67W ADVANCED COMMUNICATIONS & SENSING DATASHEET Table of contents Section Page 1. General Description ................................................................................................................................................. 4 1.1. Simplified Block Diagram ................................................................................................................................. 4 1.2. Pin Diagram ..................................................................................................................................................... 5 1.3. Pin Description..............................................................................................................................................6 2. Electrical Characteristics ......................................................................................................................................... 7 2.1. ESD Notice ...................................................................................................................................................... 7 2.2. Absolute Maximum Ratings ............................................................................................................................. 7 2.3. Operating Range.............................................................................................................................................. 7 2.4. Electrical Specifications.................................................................................................................................8 3. Timing Characteristics ............................................................................................................................................. 9 4. Working Modes of the RFM67W ..............................................................................................................................10 4.1. Operating Modes ........................................................................................................................................... 10 4.2. Application Modes.......................................................................................................................................... 10 4.2.1. Stand Alone Mode .................................................................................................................................. 10 4.2.2. MCU Mode .............................................................................................................................................. 11 5. Operation of the RFM67W .......................................................................................................................................12 5.1. Main Parameters............................................................................................................................................ 12 5.1.1. Center Frequency ................................................................................................................................... 12 5.1.2. Frequency Deviation ............................................................................................................................... 12 5.1.3. Bit Rate ................................................................................................................................................... 12 5.2. Synthesizer .................................................................................................................................................... 13 5.3. The Power Amplifier....................................................................................................................................... 14 6. Digital Control and Interface .................................................................................................................................. 15 6.1. Stand Alone Mode ......................................................................................................................................... 15 6.1.1. State Machine Description ...................................................................................................................... 15 6.1.2. Memory Organization of the E2PROM ................................................................................................... 15 6.1.3. Periodic mode ......................................................................................................................................... 17 6.1.4. Low Battery Indicator: Stand Alone Mode............................................................................................... 18 6.1.5. Low Battery Indicator: MCU Mode .......................................................................................................... 18 6.2. MCU Mode ..................................................................................................................................................... 18 6.2.1. SPI Operation ......................................................................................................................................... 18 6.2.2. Data and Data Clock Usage..................................................................................................................20 6.3. RFM67W Register Description....................................................................................................................21 7. RFM67W Application Circuits ...................................................................................................................................26 7.1. Typical Application Schematic...........................................................................................................................26 Page 2 Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: sales hoperf.com