[phucthinhel]

Đây là module RF12B

Features

• Fully integrated (low BOM, easy design-in)
• No alignment required in production
• Fast-settling, programmable, high-resolution PLL synthesizer
• Fast frequency-hopping capability
• High bit rate (up to 115.2 kbps in digital mode)
• Direct differential antenna input/output
• Integrated power amplifier
• Programmable TX frequency deviation (15 to 240 kHz)
• Programmable RX baseband bandwidth (67 to 400 kHz)
• Analog and digital RSSI outputs
• Automatic frequency control (AFC)
• Data quality detection (DQD)
• Internal data filtering and clock recovery
• RX synchron pattern recognition
• SPI compatible serial control interface
• Clock and reset signals for microcontroller
• 16 bit RX Data FIFO
• Two 8 bit TX data registers
• Low power duty cycle mode
• Standard 10 MHz crystal reference
• Wake-up timer
• 2.2 to 3.8 V supply voltage
• Low power consumption
• Low standby current (0.3µA)
• Supports very short packets (down to 3 bytes)
• Excellent temperature stability of the RF parameters

RFM12B programming guide
http://rapidshare.com/files/272363704/guide_RFM12B.PDF