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SCHEMATIC DIAGRAM
KEY / MCU / DISPLAY
NOTE:
1. RESISTORS ARE CARBON FILM 5% 1/8W
UNLESS OTHERWISE SPECIFIED.
2. CERAMIC CAPACITORS ARE 50V 10%
UNLESS OTHERWISE SPECIFIED.
SHEET: 1 OF 3
TITLE:
SIZE:
REV:
Revision
Sheet Size
FILE:
N09CSXX
Product Code:
Customer
NATNC426(A)
NAD
C426 MCU
GND
IR-IN
GND
F1
+3V3-SDBY
F2
+5V-D
STB
CLK
DIN
KEY-B
KEY-A
-VP
KEY2-PCB
+3V3-SDBY
F2
KEY-B
LED-G
KEY-A
-VP
LED-R
GND
GND
LED PCB
KEY1-PCB
F1
IR-IN
+5V-D
STB
CLK
DIN
FM 106.2 MHz
M201
BLEND
M204
MODE
M203
FM MUTE
M202
MEMORY
M205
FM/AM
M206
MODE
J1
J2
J3
J5
J6
J7
J8
J9
J1
0
J1
1
J1
2
J1
3
J1
4
J1
5
J1
6
J1
7
J1
8
J1
9
J2
0
J2
1
J2
3
J2
4
J2
5
J2
6
J2
7
J2
8
J2
9
J3
0
J3
1
J3
2
J3
3
J3
4
J3
5
J3
6
J3
7
J3
8
M209
VFD
C201
100u
C202
0.01u
1
2
3
4
5
6
7
8
U203
24C08
C219
0.1U
M210
SENSOR
REMOTE
D209A
GREEN
D209B
RED
M213
TRIGGER_IN
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
J202A
D981
1N4148
E
B
C
Q983
C114
R990
1K
R991
47K
T1
T2
R1
R2
C1+
C1-
C2+
C2-
GND
Vcc
V+
V-
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
U204
MAX232
R214
4K7
C216
100u
C217
104K
6
7
8
9
1
2
3
4
5
J201
DB9
R209
75R
R208
75R
C203
223
C205
104K
C204
100u
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
J202B
C212
100u
C213
0.1U
C210
100u
C211
0.1U
R213
4K7
R204
4K7
R203
4K7
R202
4K7
J2
2
1
P2.0
2
P2.1
3
P0.0
4
1.7
5
P1.6
6
P1.5
7
VSS
8
P3.1
9
P3.0
10
P1.4
11
P1.3
12
P1.2
13
P2.2
14
P2.3
28
P2.7
27
P2.6
26
P0.1
25
P0.2
24
P0.3
23
P0.4
22
P0.5
21
VDD
20
P0.6
19
P0.7
17
P1.1
18
P1.0
16
P2.5
15
P2.4
U201
P89LCP936
C223
100u
C222
104K
R215
470R
R216
470R
R219
680R
R220
820R
R221
1K8
R222
680R
49
LED2
50
LED1
51
GND
52
OSC
32
GR18
31
SG
17
30
SG
16
29
SG
15
28
SG
14
27
SG
13
26
SG12
25
SG11
24
SG10
23
SG9
22
SG8
21
SG7
20
SG6
19
SG5
18
SG4
17
SG3
33
VD
D
34
VE
E
35
GR10
36
GR9
37
GR8
38
GR7
39
GR6
40
GR5
41
GR4
42
GR3
43
GR2
44
GR1
45
VDD
46
LED5
47
LED4
48
LED3
16
SG2
15
SG1
14
VDD
13
K4
12
K3
11
K2
10
K1
9
STB
8
CLK
7
NC
6
DI
N
5
DOU
T
4
SW
4
3
SW
3
2
SW
2
1
SW
1
U202
PT6311
R225
10K
R227
56K
R999
5K1
R212
470R
R228
470R
L201
100uH
203
5V6
R235
4K7
R236
4K7
VR201
J201B
J201A
E
B
C
Q702
2SC1923
R704
1K
R705
10K
R701
1K5
C709
100u
C706
104K
C701
473J
R703
30K
R702
330R
1606
IR_IN
1
1A
2
1B
3
1Y
4
2A
5
2B
6
2Y
7
GND
14
VDD
13
4B
12
4A
11
4Y
10
3B
9
3A
8
3Y
U701
74HC86
D701
DAP202K
C702
10u
R706
15K
D903
3V3
C206
104K
C207
104K
C208
104K
C209
104K
D208
SR2100
R288
100R
D210
1N4148
R229
0R
J301B
M207
POWER ON
R252
820R
1
2
3
4
1
2
3
4
J203A
1
2
3
4
1
2
3
4
J203B
R211
120R
R250
4K7
R210
100R
IN
GND
OUT
U3
LM1117-3V3
E
C
B
Q201
DTC114
SG
18
SG
17
SG
16
SG
15
SG
14
SG
13
SG12
SG11
SG10
SG09
SG08
SG07
SG06
SG05
SG04
SG03
SG02
SG01
SG
17
SG
16
SG
15
SG
14
SG
13
SG
12
SG
11
SG
10
SG
09
SG
08
SG
07
SG
06
SG
05
SG
04
SG
03
SG
02
SG
01
+3V3-SDBY
POWER-ON
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
-VP
GND
+3V3-SDBY
+5V-D
RDS-CLK
RDS-DATA
AM-SMETER
FM-SMETER
FM-STEREO
FM-SD
DATA-OUT
GND
TUNER-MUTE
CE-PLL
CLK
DATA-IN
POWER-ON
CHGND
SG[01:18]
GND
DATA-OUT
