CYRF7936 2.4 GHz CyFi Transceiver Operating voltage from 1.8 V to 3.6 V Features Operating temperature from 0 C to 70 C 2.4-GHz direct sequence spread spectrum (DSSS) radio transceiver Space saving 40-pin QFN 6 6 mm package Operates in the unlicensed worldwide industrial, scientific, and Applications medical (ISM) band (2.400 GHz to 2.483 GHz) Wireless sensor networks 21-mA operating current (transmit at 5 dBm) Wireless actuator control Transmit power up to +4 dBm Home automation Receive sensitivity up to 97 dBm White goods Sleep current less than 1 A Commercial building automation DSSS data rates up to 250 kbps, Gaussian frequency-shift keying (GFSK) data rate of 1 Mbps Automatic meter readers Low external component count Precision agriculture Auto transaction sequencer (ATS) - no MCU intervention Remote controls Framing, length, CRC16, and auto acknowledge (ACK) Consumer electronics Power management unit (PMU) for MCU Personal health and fitness Fast startup and fast channel changes Toys Separate 16 byte transmit and receive FIFOs Applications Support Dynamic data rate reception The CYRF7936 CyFi transceiver is a radio IC designed for low Receive signal strength indication (RSSI) power embedded wireless applications. It can be used only with Cypresss PSoC programmable system-on-chip. Combined with Serial peripheral interface (SPI) control while in sleep mode the PSoC and a CyFi network protocol stack, CYRF7936 can be 4-MHz SPI microcontroller interface used to implement a complete CyFi wireless system. Battery voltage monitoring circuitry See www.cypress.com for development tools, reference designs, and application notes. Supports coin-cell operated applications Logic Block Diagram V PACTL V CC V DD REG L/D PMU CyFi Radio Modem V BAT RF GFSK P V IO Modulator Data RF N DSSS Interface IRQ Baseband RF BIAS SS and & Framer SCK Sequencer MISO GFSK MOSI SPI Demodulator RSSI Xtal Osc Synthesizer RST XOUT XTAL GND Cypress Semiconductor Corporation 198 Champion Court San Jose, CA 95134-1709 408-943-2600 Document Number: 001-48013 Rev. *I Revised May 19, 2017 Not recommended for new designsCYRF7936 Contents Pinouts ..............................................................................3 Absolute Maximum Ratings .......................................... 13 Pin Description .................................................................3 Operating Conditions ..................................................... 13 Functional Overview ........................................................4 DC Characteristics ......................................................... 13 Data Transmission Modes ...........................................4 AC Characteristics ......................................................... 14 Packet Framing ...........................................................4 RF Characteristics .......................................................... 15 Packet Buffers .............................................................5 Typical Operating Characteristics ................................ 17 Auto Transaction Sequencer (ATS) ............................5 Ordering Information ...................................................... 19 Data Rates ..................................................................5 Ordering Code Definitions ......................................... 19 Functional Block Overview ..............................................6 Package Description ...................................................... 20 2.4-GHz CyFi Radio Modem .......................................6 Acronyms ........................................................................21 Frequency Synthesizer ................................................6 Document Conventions ................................................. 21 Baseband and Framer .................................................6 Units of Measure ....................................................... 21 Packet Buffers and Radio Configuration Registers .....6 Document History Page ................................................. 22 SPI Interface ................................................................6 Sales, Solutions, and Legal Information ...................... 23 Interrupts .....................................................................8 Worldwide Sales and Design Support ....................... 23 Clocks ..........................................................................8 Products ....................................................................23 Power Management ....................................................8 PSoC Solutions ...................................................... 23 Receiver Front End .....................................................8 Cypress Developer Community ................................. 23 Receive Spurious Response .......................................9 Technical Support ..................................................... 23 Application Examples ......................................................9 Document Number: 001-48013 Rev. *I Page 2 of 23 Not recommended for new designs