15
No. Pin Name Function I/O PU Logic Description
1 P67/AN7 SMT I - A/D S-meter input
2 P66/AN6 SQL I - A/D Noise level input for squelch
3 P65/AN5 BAT I - A/D Battery voltage input
4 P64/AN4 TIN I - A/D CTCSS tone input/DSC code input
5 P63/SCLK22/AN3 BP1 I - A/D Band plan 1
6 P62/SCLK21/AN2 BP2 I - A/D Band plan 2
7 P61/SOUT2/AN1 DCSW O - Activ high DCS signal mute
8 P60/SIN2/AN0 RE2 I - Activ low Rotary encoder input
9 P57/ADT/DA2 TOUT O - D/A CTCSS tone output/DCS tone output
10 P56/DA1 DOUT O - D/A DTMF output
11 P55/CNTR1 SCL O - Pulse Serial clock for EEPROM
12 P54/CNTR0 TBST O - Pulse Tone burst output
13 P53/RTP1 BP4 I - - Band plan 4
14 P52/RTP0 MUTE I/O - Activ low Microphone mute/Security alarm SW
15 P51/PWM3 CLK O - Pulse Serial clock output for PLL,scramble
16 P50/PWM DATA I/O - Pulse
17 P47/SROY1 TSTB I/O - Activ low/Pulse
18 P46/SCLK1 STB O - Pulse Strobe for PLL IC
19 P45/TXD UTX O - Pulse UART data transmission output
20 P44/RXD RTX I - Pulse UART data reception output
21 P43/
/TOUT BEEP I/O - Pulse/Activ low Beep tone/Band plan 3
22 P42I/NT2 SEC I - Activ high Security voltage input
23 P41/INT1 RE1 I - Activ low Rotary encoder input
24 P40 DSQ I - Activ high Digital squelch input
25 P77 PTT I - Activ low PTT input
26 P7 SSTB O - Pulse/Activ low Strobe signal to scramble IC/Security mode
27 P75 W/N O - Activ low Wide Narrow SW
28 P74 T5 O - Activ low TX power ON/OFF output
29 P73 R5 O - Activ high RX power ON/OFF output
30 P72 SQC O - Activ low SQL ON/OFF
31 P71 C/S O - Activ low Digital scramble ON/OFF
32 P70/INTO BU I - Activ low Backup signal detection input
33 RESET RESET I - Activ low Reset input
34 Xcin Xcin - - - -
35 Xcout Xcout - - - -
36 Xin Xin - - - Main clock input
37 Xout Xout - - - Main clock output
38 Vss GND - - - CPU GND
39 P27 PSW I - Avtiv low Power switch input
40 P26 SDA O - Pulse Serial data for EEPROM
41 P25 C5C O - Activ high C5V power ON/OFF output
42 P24 AIR O - Activ high Air band SW / Tx middle power
43 P23 LOW O - Activ high Tx low power
44 P22 EXP O - Activ high Trunking data SW
45 P21 SW6 I Activ low Key sw6 (SQL)
46 P20 SW5 I Activ low Key sw5 (CALL)
47 P17 SW4 I Activ low Key sw4 (TSQ)
48 P16 SW3 I Activ low Key sw3 (MHz)
49 P15/SEG39 SW2 I Activ low Key sw2 (V/M)
50 P14/SEG38 SW1 I Activ low Key sw1 (FUNC)
51 P13/SEG37 DOWN I Activ low Mic down input
52 P12/SEG36 DUD I - - Digital unit detect
53 P11/SEG35 SCR I Active low Scramble IC ready signal/Packet PTT
54 P10/SEG34 UP I Active low Mic down input
55 P07/SEG33 S33 O - - LCD segment signal
Serial data output for PLL scramble/PLL unlock signal input
Trunking board detection / Strobe signal to trunking board
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