Features
 World wide band: 18 MHz ~ 660 MHz,
840 MHz ~1300 MHz
 12.5/25/6.25/20 kHz channel spacing
 On chip 7 dBm RF PA
 2.6 V to 3.6 V power supply
 CTCSS tone receiver with tail CTCSS
frequency detector
 23/24 bit programmable DCS code
 Standard DTMF and programmable
in-band dual tone
 SELCALL and programmable in-band
single tone
 FSK data modem
 Frequency inversion scrambler
 Voice activated switch (VOX)
 RF Signal strength measurement
 TX Audio signal strength indication
and RX audio signal strength
indication
 3-wires interface with MCU with
maximum 8 Mbps clock rate
 QFN 4x4 32-Pin package