RF12 Universal ISM Band FSK Transceiver

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RF12 PACKAGE PIN DEFINITIONS Pin type key: D=digital, A=analog, S=supply, I=input, O=output, IO=input/output Pin Name Type Function 1 SDI DI Data input of the serial control interface (SPI compatible) 2 SCK DI Clock input of the serial control interface 3 nSEL DI Chip select input of the serial control interface (active low) 4 SDO DO Serial data output with bus hold 5 nIRQ DO Interrupt request output (active low) FSK DI Transmit FSK data input 6 DATA DO Received data output (FIFO not used) nFFS DI FIFO select input (active low) In FIFO mode, when bit ef is set in Configuration Setting Command DLCK DO Received data clock output (Digital filter used, FIFO not used) 7 CFIL AIO External data filter capacitor connection (Analog filter used) FFIT DO FIFO interrupt (active high) Number of the bits in the RX FIFO that reach the preprogrammed limit In FIFO mode, when bit ef is set in Configuration Setting Command Tel: +86-755-86096587 Fax: +86-755-86096602 E-mail: sales@hoperf.com http://www.hoperf.com
RF12 8 CLK DO Microcontroller clock output Crystal connection (the other terminal of crystal to VSS) or external reference XTL AIO 9 input REF AIO External reference input. Use 33 pF series coupling capacitor 10 nRES DIO Open drain reset output with internal pull-up and input buffer (active low) 11 VSS_D S Digital VSS(Connect to VSS) 12 VSS_A S Analog VSS(Connect to VSS) 13 VSS_RF S RF VSS(Connect to VSS) 14 RF2 AIO RF differential signal input/output 15 RF1 AIO RF differential signal input/output 16 VDD_RF S RF VDD(Connect to VDD) 17 VDD_A S Analog VDD(Connect to VDD) 18 VDD_D S Digital VDD(Connect to VDD) 19 ARSSI AO Analog RSSI output 20 nINT DI Interrupt input (active low) VDI DO Valid data indicator output Note: The actual mode of the multipurpose pins (pin 6 and 7) is determined by the TX/RX data I/O settings of the transceiver. Typical Application Typical application with FIFO usage Tel: +86-755-86096587 Fax: +86-755-86096602 E-mail: sales@hoperf.com http://www.hoperf.com
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Page 3 and 4: RF12 DETAILED FEATURE-LEVEL DESCRIP
Page 5: 1, Inexpensive, low accuracy crysta
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Page 11 and 12: C o Q o L out RF12 Output capacitan
Page 13 and 14: Timing Diagram RF12 Control Command
Page 15 and 16: Logic connections between power con
Page 17 and 18: RF12 Bits 7-5 (i2 to i0): Receiver
Page 19 and 20: RF12 Note: The transceiver is in re
Page 21 and 22: RF12 10. TX Configuration Control C
Page 23 and 24: RF12 1 0 0 2.5 1 0 1 3.33 1 1 0 5 1
Page 25 and 26: RX FIFO BUFFERED DATA READ RF12 In
Page 27 and 28: REFERENCE DESIGNS RF12 Schematic PC
Page 29 and 30: RF12 Tel: +86-755-86096587 Fax: +86
Page 31: RF12 HOPE MICROELECTRONICS CO.,LTD

RF12 Universal ISM Band FSK Transceiver

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