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AR-M236/M276/M237/M277 CIRCUIT DIAGRAM (MCU PWB) 3 - 1
[3] CIRCUIT DIAGRAM AND PARTS LAYOUT
1. MCU PWB
PMCLK
BPWM
RY/BY
MIRCNT
/CPUSYNC
FW#
/LOOPINT
SPFPAPER#
OCCOVER
MHP
/INTR
SFTCNT
SPFCNT
/RESET
/SH
/CS2
/CS0
/CS3
/CS1
/OPUSRDY
/OPUCRDY
/OPUCRDY
A[20..1]
CPU3.3V
3.3V
3.3V
3.3V
3.3V
R127
1k
R128
1k
R129
33
33
R118
NP(1k)
BR140
10kx4
4
5
B
R
114
47kx4
1
8
2
7
3
6
4
5
BR109
10kx4
10kx4
1
8
2
7
3
6
4
5
B
R
127
47kx4
1
8
2
7
3
6
4
5
B
R
110
10kx4
1
8
2
7
3
6
4
5
B
R
124
10kx4
1
8
2
7
3
6
4
5
B
R
125
10kx4
1
8
2
7
3
6
4
5
B
R
123
10kx4
1
8
2
7
3
6
4
5
R
121
47k
C242
47p
47p
BR113
33x4
33x4
1
8
2
7
3
6
4
5
B
R
112
10kx4
1
8
2
7
3
6
4
5
BR111
1kx4
1
8
2
7
3
6
4
5
R119 1k
C
134
N
P
(0
.1u)
C
132
0.
1u
R251
1.5k
1.5k
BR502
33x4
33x4
1
8
2
7
3
6
4
5
BR503
33x4
33x4
1
8
2
7
3
6
4
5
BR501
33x4
33x4
1
8
2
7
3
6
4
5
BR504
33x4
33x4
1
8
2
7
3
6
4
5
BR500
33x4
1
8
2
7
3
6
4
5
R256
33
33
BR108
10kx4
10kx4
1
8
2
7
3
6
4
5
TP552
1
1
IC110
HD6412320F(H8S/2320)
P1
7
115
TIO
CA2
116
TC
L
K
C
117
TIO
CA1
118
TC
L
K
B
119
TC
L
K
A
120
P1
1
121
P1
0
122
P27
72
P26
73
P25
74
P24
75
P23
76
P22
77
P21
78
P20
79
LWR
93
P50
97
TXD0
59
D8
49
P51
98
P52
101
P53
102
PF2
94
TEND1
71
IRQ3
33
D0
40
PF1
95
A16
24
TXD1
60
Vre
f
104
PF0
96
A8
15
D1
41
RXD0
61
AN0
105
FAI
88
AS
90
RD
91
HWR
92
RXD1
62
D2
42
D9
50
D3
43
WDTOVF
80
RES
81
NMI
82
STBY
83
XTAL
85
EXTAL
86
IRQ2
34
P3
4
63
DREQ0
66
TEND0
69
DREQ1
70
D4
45
IRQ5
30
D5
46
D1
0
51
AN1
106
D6
47
P3
5
64
D7
48
P4
2
107
D1
1
52
A17
25
IRQ6
31
A9
16
D1
2
54
P4
3
108
D1
3
55
A12
20
D1
4
56
A4
11
D1
5
57
IRQ1
37
IRQ7
32
A13
21
P4
5
110
A18
26
A5
12
A14
22
A6
13
A0
6
A10
17
A1
7
CS1
1
P4
6
111
A2
8
CS0
2
A7
14
P4
7
112
A3
9
A15
23
A11
18
IRQ0
38
A19
27
MD
0
123
MD
1
124
MD
2
125
PG
0
126
CS3
127
CS2
128
A20
29
AVs
s
113
P4
4
109
AVc
c
103
GND
10
GND
3
GND
4
VCC
5
VCC
39
GND
19
GND
44
GND
28
GND
35
GND
36
GND
53
VCC
58
GND
99
GND
100
VCC
84
VCC
89
GND
87
GND
114
GND
67
GND
68
GND
65
NB6
1
NB9
1
NB11
1
NB12
1
NB13
1
NB14
1
NB16
1
NB17
1
NB19
1
NB21
1
NB23
1
NB24
1
NB10
1
NB7
1
NB5
1
NB4
1
NB3
1
NB2
1
NB1
1
NB28
1
NB30
1
NB32
1
NB34
1
NB35
1
NB39
1
NB41
1
NB43
1
NB45
1
NB48
1
NB49
1
NB51
1
NB53
1
NB55
1
NB56
1
NB57
1
NB58
1
NB59
1
NB60
1
NB61
1
NB62
1
NB66
1
NB68
1
NB70
1
NB72
1
NB74
1
NB65
1
NB76
1
NB78
1
NB75
1
NB77
1
NB71
1
NB73
1
NB8
1
NB18
1
NB20
1
NB22
1
NB7
9
1
NB8
2
1
NB8
5
1
NB9
5
1
NB9
7
1
NB9
9
1
NB9
6
1
D[15..0]
(1-2E)
(7-3A)
(3-1C)
(7-1D)
(3-1C)
(3-1C)
(7-3A)
(3-1C)
(7-1D)
(3-1C)
(3-1C)
(8-2D)
(3-1B)
(2-3C)
(8-4A)
(8-4A)
(2-3C)
(8-4A)
(8-4A)
(2-3E, 9-3E)
(2-4C)
(12-3B)
(12-3B)
(4-4E)
(2-4C, 3-1B)
(4-1B)
(1-3D)
A1
A2
A3
A4
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A14
A15
A16
A17
A18
A19
A20
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
A
A
B
B
C
C
4
3
2
1
MCU PWB (CPU SECTION)
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