CYRF7936-40LTXC Cypress Semiconductor Corp, CYRF7936-40LTXC Datasheet

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CYRF7936-40LTXC

Manufacturer Part Number
CYRF7936-40LTXC
Description
IC TXRX CYFI 2.4GHZ 40VQFN
Manufacturer
Cypress Semiconductor Corp
Datasheet

Specifications of CYRF7936-40LTXC

Frequency
2.4GHz
Data Rate - Maximum
1Mbps
Modulation Or Protocol
DSSS, GFSK
Applications
Home/Building Automation, Industrial Control and Monitoring
Power - Output
4dBm
Sensitivity
-97dBm
Voltage - Supply
1.8 V ~ 3.6 V
Current - Receiving
21mA
Current - Transmitting
21mA
Data Interface
PCB, Surface Mount
Antenna Connector
PCB, Surface Mount
Operating Temperature
0°C ~ 70°C
Package / Case
40-VQFN Exposed Pad, 40-HVQFN, 40-SQFN, 40-DHVQFN
Receiving Current
21.2mA
Transmitting Current
26.2mA
Data Rate
1Mbps
Frequency Range
2.4GHz To 2.497GHz
Modulation Type
GFSK
Rf Ic Case Style
QFN
No. Of Pins
40
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Memory Size
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
Logic Block Diagram
Cypress Semiconductor Corporation
Document Number: 001-48013 Rev *E
2.4-GHz direct sequence spread spectrum (DSSS) radio trans-
ceiver
Operates in the unlicensed worldwide industrial, scientific, and
medical (ISM) band (2.400 GHz to 2.483 GHz)
21-mA operating current (transmit at –5 dBm)
Transmit power up to +4 dBm
Receive sensitivity up to –97 dBm
Sleep current less than 1 µA
DSSS data rates up to 250 kbps, Gaussian frequency-shift
keying (GFSK) data rate of 1 Mbps
Low external component count
Auto transaction sequencer (ATS) - no MCU intervention
Framing, length, CRC16, and auto acknowledge (ACK)
Power management unit (PMU) for MCU
Fast startup and fast channel changes
Separate 16 byte transmit and receive FIFOs
Dynamic data rate reception
Receive signal strength indication (RSSI)
Serial peripheral interface (SPI) control while in sleep mode
4-MHz SPI microcontroller interface
Battery voltage monitoring circuitry
Supports coin-cell operated applications
MISO
MOSI
SCK
SS#
V
RST
IRQ
L/D
V
BAT
IO
V
REG
PMU
SPI
V
DD
XTAL
CyFi Radio Modem
Sequencer
Interface
Xtal Osc
Data
and
XOUT
198 Champion Court
RSSI
Baseband
& Framer
DSSS
Synthesizer
Applications
Applications Support
The CYRF7936 CyFi™ transceiver is a radio IC designed for low
power embedded wireless applications. It can be used only with
Cypress’s PSoC programmable system-on-chip. Combined with
the PSoC and a CyFi network protocol stack, CYRF7936 can be
used to implement a complete CyFi wireless system.
See
designs, and application notes.
GND
V
Operating voltage from 1.8 V to 3.6 V
Operating temperature from 0 °C to 70 °C
Space saving 40-pin QFN 6 × 6 mm package
Wireless sensor networks
Wireless actuator control
Home automation
White goods
Commercial building automation
Automatic meter readers
Precision agriculture
Remote controls
Consumer electronics
Personal health and fitness
Toys
CC
Demodulator
2.4-GHz CyFi™ Transceiver
www.cypress.com
Modulator
GFSK
GFSK
PACTL
San Jose
,
CA 95134-1709
for development tools, reference
Revised September 21, 2010
CYRF7936
RF
RF
RF
408-943-2600
P
N
BIAS
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CYRF7936-40LTXC Summary of contents

Page 1

... Personal health and fitness ■ Toys Applications Support The CYRF7936 CyFi™ transceiver is a radio IC designed for low power embedded wireless applications. It can be used only with Cypress’s PSoC programmable system-on-chip. Combined with the PSoC and a CyFi network protocol stack, CYRF7936 can be used to implement a complete CyFi wireless system ...

Page 2

... Operating Conditions .......................................................... 13 DC Characteristics .............................................................. 13 AC Characteristics .............................................................. 14 RF Characteristics ............................................................... 15 Typical Operating Characteristics ..................................... 17 Ordering Information ........................................................... 19 Ordering Code Definition ................................................ 19 Package Description ........................................................... 20 Document Conventions ...................................................... 21 Acronyms ....................................................................... 21 Units of Measure ............................................................ 21 Document History Page ...................................................... 22 Sales, Solutions, and Legal Information ........................... 22 Worldwide Sales and Design Support ............................ 22 Products ......................................................................... 22 PSoC Solutions .............................................................. 22 CYRF7936 Page [+] Feedback ...

Page 3

... Pinouts XTAL Table 1. Pin Description - CYRF7936 40-Pin QFN Pin Number Name Type 1 XTAL 14, 15 17, 18, 20, 21, 22, 23, 31, 32, 36 Pwr Pwr BAT(0- BIAS GND GND RESV SCK I 26 IRQ I/O 27 MOSI I/O 28 MISO I/O 29 XOUT I/O 30 PACTL I Pwr IO 34 ...

Page 4

... It changes to lower data rates at longer distances or in high interference environments or both. In addition, the CYRF7936 IC has a power management unit (PMU), which allows direct connection of the device to any battery voltage in the range 1 3.6 V. The PMU conditions the battery voltage to provide the supply voltages required by the device, and may supply external devices ...

Page 5

... Similarly, when receiving packets in transaction mode, firmware must retrieve the fully received packet in response to an interrupt request indicating reception of a packet. Data Rates The CYRF7936 IC supports the following data rates by combining the PN code lengths and data transmission modes described in the previous sections: ■ ...

Page 6

... Registers may therefore be read from or written to when the device is in sleep mode, and the 12 MHz oscillator disabled. The SPI interface and the IRQ and RST pins have a separate voltage reference pin (V interface supporting directly to MCUs operating at voltages below the CYRF7936 IC supply voltage. CYRF7936 Figure 6 on page 7. Figure 4 ...

Page 7

... MOSI INC MISO Document Number: 001-48013 Rev *E [5:0] Address Figure 4. SPI Single Read Sequence data to mcu data to mcu Figure 6. SPI Single Write Sequence data from mcu data from mcu CYRF7936 Byte 1+N [7:0] Data data to mcu 1 data from mcu 1 Page [+] Feedback ...

Page 8

... The IRQ pin can be programmed to be either active HIGH or active LOW; it can be a CMOS or open drain output. The CYRF7936 IC features three sets of interrupts: transmit, receive, and system interrupts. These interrupts all share a single pin (IRQ), but can be independently enabled or disabled. ...

Page 9

... Application Examples Figure 8. Recommended Circuit for Systems where V Document Number: 001-48013 Rev *E CYRF7936 ≤ 2.4 V BAT Page [+] Feedback ...

Page 10

... 800-11651 800-10594 630-11356 610-13402 CYRF7936-40LFXC 800-13259 PDCR-9515 REV01 PCB 20 1 920-11206 LABEL1 21 1 920-51500 REV01 LABEL2 Document Number: 001-48013 Rev *E ≤ 2.4 V BAT Description 2.5 GHz H-STUB Wiggle Antenna for 32 MIL PCB CAP 15 PF 50V CERAMIC NPO 0402 Panasonic CAP 2 ...

Page 11

... Figure 9. Recommended Circuit for Systems where 0402 0402 0402 VDD 35 VCC3 16 VCC2 7 VCC1 3 VREG 40 VIO 33 VBAT0 38 VBAT1 6 VBAT2 8 0402 VDD 49 VCC 22 Document Number: 001-48013 Rev * 3.6 V (PMU Disabled) BAT E-PAD 41 GND1 12 VSS 50 VSS 19 0402 CYRF7936 GND 2 Page [+] Feedback ...

Page 12

... Kemet C0805C475K9PACTU Murata GRM21BR71A225KA01L Electronics North America LITEON LTST-C155KGJRKT ACON UAR72-4N5J10 Panasonic - ECG ELJ-RE22NGF2 Panasonic - ECG ELJ-RF1N8DF Panasonic - ECG ERJ-3GEYJ240V Panasonic - ECG ERJ-2GE0R00X Panasonic - ECG ERJ-2GEJ102X Panasonic - ECG EVQ-P7J01K Cypress CYRF7936 Rev A5 Semiconductor Cypress CY8C24794-24LFXI Semiconductor eCERA GF-1200008 XXXXXX Page [+] Feedback ...

Page 13

... V, BAT REG 0–50 °C, RX mode V = 1.8V 2.73V, 50 °C–70 °C, BAT REG RX mode to inputs through a series resistor limiting input current to 1 mA. AC timing not guaranteed. . BAT . IO CYRF7936 [9] ............................ >2000 V [9] ................................. 1100 V Min Typ Max 1.8 – 3.6 2.4 2.43 – 2.7 2.73 – ...

Page 14

... LOAD 18. SCK must start low at the time SS# goes LOW, otherwise the success of SPI transactions are not guaranteed. Document Number: 001-48013 Rev *E Description Figure 10. SPI Timing t SCK_CYC t t SCK_HI SCK_LO . IO CYRF7936 Min Typ Max Unit 238.1 – – ns 100 – – ns 100 – ...

Page 15

... MHz 100 kHz ResBW 100 kHz ResBW 100 kHz ResBW Seven steps, monotonic PN code pattern 10101010 PN code pattern 11110000 >0 dBm –6 dBc, 100 kHz ResBW CYRF7936 Min Typ Max Unit 2.400 – 2.497 GHz –97 – dBm –93 – ...

Page 16

... Slow channels – Medium channels – Fast channels – GFSK – 250 kbps – 125 kbps – <125 kbps – <60 ppm crystal-to-crystal – CYRF7936 Typ Max Unit –38 – dBm –34 – dBm –47 – dBm –43 – dBm –48 – ...

Page 17

... Typical Operating Characteristics The typical operating characteristics of CYRF7936 follow Transmit Power vs. Temperature (Vcc = 2.7v) 6 PA7 4 2 PA6 PA5 -6 -8 -10 PA4 -12 - Temp (deg C) Typical RSSI Count vs Input Power 32 24 LNA ON 16 LNA OFF ATT ON LNA OFF 8 0 -120 -100 -80 -60 -40 -20 Input Power (dBm) RSSI vs ...

Page 18

... TEMPERATURE (C) ICC TX @ PA3 19 3.3V 18.5 3.0V 2.7V 18 2.4V 17.5 17 16 TEMPERATURE (C) CYRF7936 ICC RX SYNTH 9.2 9.1 3.3V 9 3.0V 8.9 2.7V 8.8 2.4V 8.7 8.6 8.5 8.4 8.3 8.2 8.1 8 7.9 7 TEMPERATURE (C) ICC TX @ PA1 17.5 3. ...

Page 19

... Parameter R1 1071 R2 937 R 500 3.00 CC Ordering Information Part Number Radio Package Name CYRF7936-40LTXC Transceiver Ordering Code Definition 7936 40-LTX Temperature range: = Commercial 40-pin QFN package X = Pb-free Part Number Marketing Code Company ID Cypress Document Number: 001-48013 Rev *E (continued) ICC TX @ PA6 30 29.5 3 ...

Page 20

... Package Description The recommended dimension of the PCB pad size for the E-pad underneath the QFN is 3.5 mm × 3.5 mm (width × length). Document Number: 001-48013 Rev *E Figure 12. 40-Pin Sawn QFN (6 × 6 × 0.90 mm) CYRF7936 001-44328 *D Page [+] Feedback ...

Page 21

... MHz megahertz MΩ megaohm μA microampere μs microsecond μV microvolts μVrms microvolts root-mean-square μW microwatts mA milliampere ms millisecond mV millivolts nA nanoampere ns nanosecond nV nanovolts Ω ohm pp peak-to-peak ppm parts per million ps picosecond sps samples per second V volts CYRF7936 Page [+] Feedback ...

Page 22

... Document History Page Description Title: CYRF7936 2.4-GHz CyFi™ Transceiver Document Number: 001-48013 Orig. of Rev. ECN No. Change ** 2557501 KKU/AESA *A 2615458 KKU/AESA *B 2672793 DPT/PYRS *C 2902376 TGE *D 2927979 TGE/AESA *E 3028381 TGE Sales, Solutions, and Legal Information Worldwide Sales and Design Support Cypress maintains a worldwide network of offices, solution centers, manufacturer’s representatives, and distributors. To find the office ...

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