8
No. Terminal Signal I/O Description
1 P67/AN7 BP1 I Band plan 1
2 P66/AN6 BCHK I Battery detection input
3 P65/AN5 PCNT 0 Battery detection SW output
4 P64/AN4 SMT I S-meter input
5 P63/SCLK22/AN3 SQL I Noise level input for squelch
6 P62/SCLK21/AN2 TIN I CTCSS Tone input
7 P61/SOUT2/AN1 TLC O TX LED SW output
8 P60/SIN2/AN0 BAT I Battery charge voltage input
9 P57/ADT/DA2 TUNC/TONE O RX Tuning/Tone out
10 P56/DA1 PO O Power control output
11 P55/CNTR1 C3C O C3V power ON/OFF output
12 P54/CNTR0 TBST O Tone burst output
13 P53/RTP1 PT3 I PTT input
14 P52/RTP0 CLK O Serial clock output
15 P51/PWM1 DATA/UL I/O Serial data output/Unlock input
16 P50/PWM0 STB1 O Strobe for PLL
17 P47/SRDY1 STB2 O Strobe for electronic volume
18 P46/SCLK1 EAR O Earphone antenna SW output
19 P45/TXD CTX O Clone data transmission output
20 P44/RXD CRX I Clone data reception input
21 P43/φ/TOUT BEEP/BP3 I/O Beep tone output/Band plan 3
22 P42/INT2 DET I DC-JACK detection input
23 P41/INT1 RE2 I Rotary encoder input 2
24 P40 RESW I Rotary encoder push SW input
25 P77 RE1 I Rotary encoder input 1
26 P76 P3C O PLL power ON/OFF output
27 P75 PLC O Low VHF VCO ON/OFF output
28 P74 PUC O UHF VCO ON/OFF output
29 P73 PVC O VHF VCO ON/OFF output
30 P72 SDA I/O Serial data I/O for EEPROM
31 P71 SCL O Serial clock output for EEPROM
32 P70/INT0 BU I Back up signal detection input
33 RESET RESET I Reset input
34 XCIN NC
−−
35 XCOUT NC −−
36 XIN XIN I Clock input
37 XOUT XOUT O Clock output
38 VSS VSS
−CPU GND
39 P27 V/M I V/M key input
40 P26 BAND I BAND key input
41 P25 SCAN I SCAN key input
42 P24 POWER I POWER key input
43 P23 FUNC I FUNC key input
44 P22 MONI I MONI key input
45 P21 BUG O Bugging SW output
46 P20 CHG O Charge SW output
47 P17 R3C O RX power ON/OFF output
48 P16 BARC O Bar antenna SW output
49 P15/SEG39 BD1C O BND1 power SW output
50 P14/SEG38 BD2C O BND2 power SW output
