1
1
2
2
3
3
4
4
5
5
6
6
D
D
C
C
B
B
A
A
CP
CJS
2007-07-01
DML
2013-04-05
A-3
1 of 1
7361
MIDIAN ELECTRONICS, INC.
DATE:
DESIGN:
DWN BY:
REV:
APPR
COPYRIGHT ©
REV
SHEET
PROJECT NUMBER
DOCUMENT NAME
SCHEMATIC
2013
VPU-12A
47K
R8
47K
R1
SD1
D1
3.3V
3.3V
RA2
1
RA3
2
TOCK1
3
MCRL
4
V
SS
5
V
SS
6
RB0
7
RB1
8
RB2
9
RB3
10
RB4
11
RB5
12
RB6
13
RB7
14
VDD
15
VDD
16
OSC2
17
OSC1
18
RA0
19
RA1
20
16LF818
IC1
TP3
560p
C11
100K
R21
100K
R2
560p
C29
.1u
C13
-
+
2
3
1
LMV324
IC5:1
-
+
6
5
7
LMV324
IC5:2
-
+
9
10
8
LMV324
IC5:3
-
+
13
12
14
LMV324
IC5:4
4
VCC
VCC
11
GND
GND
LMV324
IC5:5
VAN
560p
C12
100K
R20
100K
R12
.1u
C14
VAN
A
11
A
11
X0
12
X0
12
X1
13
X1
13
X
14
X
14
4053
IC2:1
B
10
B
10
Y1
1
Y1
1
Y0
2
Y0
2
Y
15
Y
15
4053
IC2:2
C
9
C
9
Z
4
Z
4
Z0
5
Z0
5
Z1
3
Z1
3
E
\
6
E
\
6
VCC
16
VCC
16
VEE
7
VEE
7
GND
8
GND
8
4053
IC2:3
SD1
D2
BSS
Q2
560p
C3
18K
R13
12K
R14
.012u
C10
BSS
Q1
-
+
2
3
1
LMV358
IC3:1
-
+
6
5
7
LMV358
IC3:2
8
VCC
VCC
4
GND
GND
LMV358
IC3:3
10K1%
R15
47K
R10
36K
R11
.001u
C9
10K1%
R16
.01u
C6
.01u
C4
100p
C22
SD1
D3
SD1
D4
SD1
D6
SD1
D5
BSS
Q3
BSS
Q4
47K
R33
330R
R37
3.3V
TP1
MODE LED
*
R34
BSS
Q5
.1u
C28
220K
R35
*
R36
TP2
AUDIO EN
SH
D
N
7
V
+
4
C
LK
8
IN
2
OUT
5
C
OM
1
OS
6
V-
3
7427
IC4
.1u
C16
.1u
C15
VAN
.01u
C19
3.3V
.1u
C18
3.3V
47K
R23
3.3V
100K
R18
100K
R19
100K
R32
.01u
C25
4.7K
R30
220K
R31
.01u
C7
560p
C27
100K
R22
VAN
.1u
C1
VAN
560p
C26
100K
R17
.1u
C2
*
C30
5206
IN1
1
ENA
3
GND
2
R
ES
4
OUT
5
VR1
.1u
C8
.1u
C17
3.3V
3.3V
3.3V
TX OUT[GRN]
P1:1
+3.7V to +15V[RED]
P1:2
CLR/SCR/PROG OUT[BRN]
P1:3
GND
P1:4
PROG IN[BLUE]
P1:5
RX IN[ORG]
P1:6
RX/TX[YEL]
P1:7
FS A[GRN/WHT]
P1:8
TX IN[WHT]
P1:9
FS B[GRAY/WHT]
P1:10
FS C/MODE LED[GRAY]
P1:11
FS D/AUDIO EN[ORG/W]
P1:12
RX OUT[VIO]
P1:13
.01u
C21
3.3V
10 MHz.
Y1
1K
R3
OSC1
OSC2
OSC1
OSC2
22p
C23
22p
C24
.01u
C20
VIN
VIN
FREQUENCY SELECT
**
***
** = TO USE MODE LED REMOVE D4 AND INSTALL R34
*** = TO USE AUDIO EN REMOVE D3 AND INSTALL R36
* = NOT INSTALLED
