Rainbow Electronics RFM12 User Manual
Rfm12, Universal ism band fsk transceiver module, General introduction
RFM12
UNIVERSAL ISM BAND FSK TRANSCEIVER MODULE
RFM12
RFM12
（the purpose of this spec covers mainly for the
physical characteristic of the module, for register
configure and its related command info please refer
General Introduction
RFM12 is a low costing ISM band transceiver
module implemented with unique PLL. It works
signal ranges from 315/433/868/915MHZ bands,
comply with FCC, ETSI regulation. The SPI
interface is used to communicate with
microcontroller for parameter setting.
Features:
• Low costing, high performance and price ratio
• Tuning free during production
• PLL and zero IF technology
• Fast PLL lock time
• High resolution PLL with 2.5 KHz step
• High data rate (up to 115.2 kbps with internal demodulator，with external RC filter highest data rate is
256 kbps)
• Differential antenna input
• Automatic antenna tuning
• Programmable TX frequency deviation (from 15 to 240 KHz)
• Programmable receiver bandwidth (from 67 to 400 kHz)
• Analog and digital signal strength indicator (ARSSI/DRSSI)
• AFC
• DQD
• Internal data filtering and clock recovery
• RX synchron pattern recognition
• SPI interface
• Clock and reset signal output for external MCU use
• 16 bit RX Data FIFO
• Two 8 bit TX data registers
• 10MHz crystal for PLL timing
• Wakeup timer
• 2.2V - 5.4V power supply
• Low power consumption
• Standby current less than 0.3uA
Tel: +86-755-82973806 Fax: +86-755-82973550 E-mail: [email protected]
http://www.hoperf.com