Radio Shack HTX-400 Service Manual page 18

No. PIN NAME
38 VASS
39 VAREF
40 VDD
41 P70(SEG31)
42 P71(SEG30)
43 P72(SEG29)
44 P73(SEG28)
45 P74(SEG27)
46 P75(SEG26)
47 P76(SEG25)
48 P77(SEG24)
49 SEG23(P60)
50 SEG22(P61)
51 SEG21(P62)
52 SEG20(P63)
53 SEG19(P64)
54 SEG18(P65)
55 SEG17(P66)
56 SEG16(P67)
57 SEG15(P90)
58 SEG14(P91)
59 SEG13(P92)
60 SEG12(P93)
61 SEG11
62 SEG10
63 SEG9
64 SEG8
65 SEG7
66 SEG6
67 SEG5
68 SEG4
69 SEG3
70 SEG2
71 SEG1
72 SEG0
73 COM3
74 COM2
REMARKS
AD REFERENCE LOW VOLTAGE
AD REFERENCE HIGH VOLTAGE
VDD
OPEN DRAIN AUDIO PROTECT
OPEN DRAIN PTT KEY
OPEN DRAIN OPTION VIBRATOR
OPEN DRAIN SIGNAL MUTE
OPEN DRAIN CLOCK SHIFT
OPEN DRAIN MODEL SELECTOR
OPEN DRAIN OPTION H/L
OPEN DRAIN EEPROM CONTROL
LCD SEGMENT OUTPUT
LCD SEGMENT OUTPUT
LCD SEGMENT OUTPUT
LCD SEGMENT OUTPUT
LCD SEGMENT OUTPUT
LCD SEGMENT OUTPUT
LCD SEGMENT OUTPUT
LCD SEGMENT OUTPUT
LCD SEGMENT OUTPUT
LCD SEGMENT OUTPUT
LCD SEGMENT OUTPUT
LCD SEGMENT OUTPUT
LCD SEGMENT OUTPUT
LCD SEGMENT OUTPUT
LCD SEGMENT OUTPUT
LCD SEGMENT OUTPUT
LCD SEGMENT OUTPUT
LCD SEGMENT OUTPUT
LCD SEGMENT OUTPUT
LCD SEGMENT OUTPUT
LCD SEGMENT OUTPUT
LCD SEGMENT OUTPUT
LCD SEGMENT OUTPUT
LCD SEGMENT OUTPUT
LCD COMMON OUTPUT
LCD COMMON OUTPUT
17
DESCRIPTION
(IN)
(IN)
(IN)
(OUT)
(IN)
(IN)
(IN)
(OUT)
ACTIVE
PUSH:"H"