1
1
2
2
3
3
4
4
5
5
6
6
D
D
C
C
B
B
A
A
CP
CJS
1997-11-01
DML
2013-02-05
D-2
1 of 1
7287
MIDIAN ELECTRONICS, INC.
DATE:
DESIGN:
DWN BY:
REV:
APPR
COPYRIGHT ©
REV
SHEET
PROJECT NUMBER
DOCUMENT NAME
SCHEMATIC
2012
AE-1
1
P3:1
2
P3:2
3
P3:3
4
P3:4
5
P3:5
6
P3:6
7
P3:7
8
P3:8
1
P2:1
2
P2:2
3
P2:3
4
P2:4
5
P2:5
6
P2:6
7
P2:7
8
P2:8
9
P2:9
1
0
P2:10
11
P2:11
12
P2:12
13
P2:13
10K
R37
10K
R38
10K
R39
10K
R40
10K
R42
10K
R43
10K
R44
OSC2
36
T
C
M
P
3
3
V
D
D
3
8
V
P
P
4
3
S
S
3
2
B3
11
D7
34
OSC1
37
B
0
8
B1
9
A5
2
A6
1
A7
44
A4
3
A3
4
A2
5
A1
6
A0
7
C4
21
C5
20
C3
23
C0
26
C1
25
C2
24
C6
19
C7
18
B4
12
B7
15
B6
14
GND
17
RES
41
B2
10
TCAP
35
IRQ
42
B5
13
SCK
31
MOSI
30
MISO
29
RDI
27
TDO
28
NC1
16
NC2
22
N
C
3
3
9
N
C
4
4
0
MC705C8ACFB
U1
*
JU1
10K
R1
+5V
.1u
C5
+5V
2
1
A6
D1:1
3
1
A6
D1:2
2
1
A6
D3:1
3
1
A6
D3:2
10K
R6
+5V
+5V
+5V
10K
R5
+5V
B25
Q1
2
1
A6
D2:1
3
1
A6
D2:2
560p
C1
20K
R4
*
R34
100K
R3
4.7K
R2
+5V
+5V
10K
R8
+5V
MIC5206
IN1
1
ENA
3
G
N
D
2
R
E
S
4
OUT
5
VR1
.47u
C3
.47u
C4
.001u
C2
VIN
+5V
CS
1
SCLK
2
SI
3
SO
4
V
C
C
8
NC1
7
NC2
6
G
N
D
5
CAT93C366
U2
+5V
100K
R41
100K
R7
4.7K
R36
4.7K
R35
B25
Q4
560p
C13
100p
C11
100p
C12
BSS
Q5
D25
Q3
4.7K
R32
82R
R33
VIN
4.7M
R9
4.00MHz.
Y1
22p
C14
22p
C15
10K
R11
10K
R13
10K
R15
10K
R17
10K
R19
10K
R21
10K
R23
20K
R10
20K
R12
20K
R14
20K
R16
20K
R18
20K
R20
20K
R22
20K
R24
20K
R25
47K
R29
22K
R26
22K
R27
.01u
C8
100K
R28
VIN
D25
Q2
VIN
560p
C9
11
33
22
10K
R30
22K
R31
.47u
C10
[GRN]
TX TONE OUT
COR/COS IN
ALERT/SPKR OUT
NOT USED
PTT OUT
PROG EN
PROG IN
INPUT 8
P1:1
VIN/+5V TO +15V[RED]
P1:2
[BRN]
P1:3
GND[BLK]
P1:4
[BLUE]
P1:5
N/C
P1:6
N/C
P1:7
[GRN/W]
P1:8
[WHT]
P1:9
N/C
P1:10
[GRY]
P1:11
[ORG/W]
P1:12
[VIO]
P1:13
SEE NOTE
NOTE:
*=NOT INSTALLED
REMOVE R29 TO MUTE SIDE TONE
