Service manual
S-21
Figure S-8
CPU Core Schematic Diagram (Sheet 6 of 10)
035191
RST-L
SPARES
ADDRESS DECODING - MEMORY MAPPING
EXTERNAL OUTPUT PORT
DISPLAY CONNECTOR
for U30
CPU CORE
EXTERNAL OUTPUT PORT
0000 - EFFF
ROM - 0000 - EFFF
RAM - F000 - FFFF
IS NOT AVAILABLE
ONLY IF ATP-SM
HC49S IS USED
ADDRESS LATCHING
Bypass cap
I185
I184
I181
EEPEN
I182
10.0K
R131
R101
10.0K
10.0K
R78
10.0K
R92
R117 2.21K
221
R89
R111
221
R88
121
R110
121
R87 121
R86 121
R75 121
I109
I108
U41 74HC08S
10
9
8
I53
74HC08S
U28
5
4
6
I92
U41
74HC08S
6
4
5
74HC08S
U41
2
1
3
LEDEN
RST-L
0.1U
C118
10MHZ
Y2
ATP-SM
1441
IIC_SCK
I229
I228
I227
U21
74HC573S
1
OC
C
11
8Q
12
8D
9
7Q
13
7D
8
6Q
14
6D
7
5Q
15
5D
6
4Q
165
4D
3Q
174
3D
2Q
183
2D
1Q
192
1D
2
3
4
5
6
7
8
9
11
1
ALE
ADDR7AD7
ADDR6AD6
ADDR5AD5
ADDR4AD4
ADDR3AD3
ADDR2AD2
ADDR1AD1
ADDR0AD0
VDD
10V
47U
C116
7343
+
I163
I174
I170
I107I105I103
U20
74HC573S
1
OC
C
11
8Q
12
8D
9
7Q
13
7D
8
6Q
14
6D
7
5Q
15
5D
6
4Q
165
4D
3Q
174
3D
2Q
183
2D
1Q
192
1D
2
3
4
5
6
7
8
9
11
1
LEDEN
PICEN_L
I179
EXOUTEN-L
I178
RST-L
U34
74HC02S
1
2
3
VDD
I169
WR-L
ALE
RD-L
WR-L
I167
I164
I161
I162
I74
I89
ADDR13
ADDR12
ADDR11
ADDR0
I149
AD8
AD6
I126
VREF
C82
0.1U
I102 I104 I106 I101
10V
47U
C102
7343
+
RWD_RST
Y5
10MHZ
2
1
HC49S
21
VDD
VDD
VDD
Q11
SI99534
65
3
VDD
J4
CON_7X2
9
87
65
43
2
1413
1211
10
1
9
8
6
4
2
14
12
10
1
0.1U
C91
WR-L
PORTSEL-L
ADDR15
ADDR14
ADDR13
ADDR12
22P
C90
0.1U
C78
C95
22P
0.1U
C81
U25
74HC20S
6
5
4
2
1
Q11
SI99532
87
1
U27
80C196KC
6
ACH0/P0.0
5
ACH1/P0.1
7
ACH2/P0.2
4
ACH3/P0.3
11
ACH4/P0.4
10
ACH5/P0.5
8
ACH6/P0.6
9
ACH7/P0.7
60
AD0
59
AD1
50
AD10
49
AD11
48
AD12
47
AD13
AD14
46
45
AD15
58
AD2
57
AD3
56
AD4
55
AD5
54
AD6
53
AD7
52
AD8
51
AD9
12
ANGND
65
CLKOUT
14
GND1
36
GND2
68
GND3
24
HSI0
HSI1
25
26
HSI2/HSO4
27
HSI3/HSO5
28
HSO0
29
HSO1
34
HSO2
35
HSO3
63
INST
P1.0
19
20
P1.1
P1.2
21
22
P1.3/PWM1
23
P1.4/PWM2
P2.0/TXD
18
17
P2.1/RXD
P2.2/EXTINT
15
44
P2.3/T2CLK
P2.4/T2RST
42
39
P2.5/PWM0
33
P2.6/TWUP-DN
P2.7/T2CAPT
38
PWR
1
37
VPP
VREF
13
67
XTAL1
66
XTAL2
62
ADV
30
BREQ
31
HLDA
32
HOLD
61
RD
41
WRH/BHE
40
WRL/WR
ALE/
P1.5/
P1.6/
P1.7/
64
BUSWIDTH
2
EA
3
NMI
16
RESET
READY
43
25
18
38
33
24
43
27
26
35
34
29
28
64
2
3
16
32
47
48
49
31
30
23
22
21
20
50
51
52
53
54
55
56
57
58
59
60
19
9
8
10
11
4
6
5
7
12
13
37
65
66
67
1
68
36
14
63
45
46
40
41
62
61
17
15
44
42
39
U30
~RST
6
RST
5
LTC1232
VCC
8
TOL
3
TD
2
ST
7
PBRST
1
GND
4
6
5
8
3
27
1
4
U25
74HC20S
8
13
12
10
9
TP33
U34
74HC02S
10
8
9
U34
74HC02S
13
11
12
I100
WD_RST
TP32
I91
I110
ADDR15
ADDR14
ADDR13
ADDR12
ADDR11
ADDR10
ADDR9
ADDR8
ALE
AD15
AD14
AD13
AD12
AD11
AD10
AD9
AD8
0.1U
C77
C80
0.1U
0.1U
C83
VDD
VDD
TP35
TP36
RAD15
RAD14
RAD13
RAD12
RAD11
RAD10
RAD9
RAD8
RAD7
RAD6
RAD5
RAD4
RAD3
RAD2
RAD1
RAD0
I113
I114
I116
I115
I120
I119
I118
I117
I128
I127
I125
I124
I123
I122
I121
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
EXOUTEN-L
I144
I143
I142
I141
I140
I139
I138
I137
I136
I135
I134
I133
I132
I131
I130
AD0
AD1
AD2
AD3
AD4
AD5
AD7
AD9
AD10
AD11
AD12
AD13
AD14
AD15
I129
ADDR15
ADDR14
ADDR10
ADDR9
ADDR7
ADDR5
ADDR4
ADDR3
ADDR2
ADDR1
I159
I158
I157
I156
I155
I154
I153
I152
I151
I150
I148
I147
I146
I145
ADDR6
ADDR8
I160
RD-L
ALE
I168
SPI_SCK
SPI_MOSI
I175
I111
I112
I177
I183
BATT_IND
PSRCH_IND
AL_SIL_IND
VDD
U29
74HC574S
OC
1
CLK
11
8Q
12
8D
9
7Q
13
7D
8
6Q
14
6D
7
5Q
15
5D
6
4Q
16
4D
5
3Q
17
3D
4
2Q
18
2D
3
1Q
19
1D
2
16
1
11
9
8
7
6
5
4
3
2
12
13
14
15
17
18
19
TP34
VDD
I226
4700P
L6
1
2
3 44
2
1
L7 0.95U
LEDDIS
IR/RED
0.95UL8
0.95UL9
RWD_RST
L10 0.95U
PWM1
0.95UL11
PWM2
L12 0.95U
0.95UL13
PORTSEL-L
L15 0.95U
TXD
0.95UL14
L16 0.95U
SAMPRED
0.95UL17
0.95UL18
OFF/ON
SAMPIR
SPI_MOSI
I90
I93
VDD
U28
74HC08S
11
12
13
U28
74HC08S
8
9
10
TP25
VDD
TP27
RAMEN-L
C94
0.1U
VDD
RP2
120
9
10
11
12
13
14
15
16
7
6
5
4
3
2
1
8
16
15
14
13
12
11
10
9
RP1
120
9
10
11
12
13
14
15
16
8
7
6
5
4
3
2
9
10
11
12
13
14
15
16
1
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
AD8
AD9
AD10
AD11
AD12
AD13
AD14
AD15
BTN_5
BTN_4
PICINT
RXD
IRDC
REDAC
REDDC
IRAC
RSENS
BTN_1
BTN_2
BTN_3
IRLED/AV
RAMEN-L SPI_SCK
PHOTOI
REDLED/AV
ZERO-L
SPI_MISO
RAD0
RAD1
RAD2
RAD3
RAD4
RAD5
RAD6
RAD7
RAD8
RAD9
RAD10
RAD11
RAD12
RAD13
RAD14
RAD15
RALE-L
RRD-L
RWR-L
CLK_OUT
196PWR
50V
470P
C79
I166
I231
I224
I230
ROMEN-L
I234
I233
IIC_SCK
I221
IICDATA
PWM0
PICINT
SPI_MISO
VDD
IICDATA
RST-L
DISP_DATA
I176
I66
I239
U41
74HC08S
11
12
13
I242