Sharp MD-R3 Service Manual page 72

MD-R3
IC901 RH-iX0240AWZZ: System Control Microcomputer (IX0240AW) (2/2)
Pin No. Port Name
65-71 P37/SEG31-
P31/SEG25
72 P30/SEG24
73-80 P97/SEG23-
P90/SEG16
81-88 P87/SEG15-
P80/SEG8
89,90 PA7/SEG7,
PA6/SEG6
91 VCC
92-97 PA5/SEG5-
PA0/SEG0
98 VEE
99 AVSS
100 VREF
KEY 1
KEY 2
KEY 3
NC
INI
JOG AD
MLAS
MICK
MKAD
MSD/DIGSEL
JP1
PUIN
LOCK/DRD
DAC MODE
DAC CLK/EX SCK
DAC DATA/EX DATA
EX-LCK
DFS0/DFS1
(MD) DSTB
(MD) DSCK
(MD) K-DATA
(MD) MD DATA
MD LO/EJ
(CD) D OUT
CH CMND
CH DATA
CH RDY
CH CLK
P IN
PCONT
Terminal Name Input/Output
S31-S25 Output
S0 Output
S0-S8 Output
S9-S16 Output
S17,S18 Output
VCC Input
S19-S24 Output
VEE Input
AVSS Input
VREF Input
100 99 98 97 96 95
AN7
1
AN6
2
AN5
3
4
AN3
5
AN2
6
P71
7
P70 8
PB3 9
PB2
10
P57
11
P56 12
P55 13
P54 14
P53 15
P52 16
P51 17
MICROCOMPUTER
AN8 18
19
SRDY1
SCLK1 20
SOUT1 21
22
SIN1
23
P63
24
CNTR0
25
P61
26
P60
27
P47
28
P46
29
INT1
30
P44
31 32 33 34 35 36
Figure 72 BLOCK DIAGRAM OF IC
Segment for FL drive
Segment for FL drive
Segment for FL drive
Segment for FL drive
Segment for FL drive
+5V
Segment for FL drive
-30V
GND
+5V
94 93 92 91 90 89 88 87 86 85 84 83 82
IC901
IX0240AW
SYSTEM
37 38 39 40 41 42 43 44 45 46 47 48 49
– 72 –
Function
81
SEG16
USEG08
80
SEG17 USEG07
79
SEG18
USEG06
78
SEG19
USEG05
77
SEG20 USEG04
76
SEG21
USEG03
75
SEG22
USEG02
74
SEG23 USEG01
73
SEG24
72 USEG00
SEG25
71 USEG25
SEG26
70 USEG26
69 SEG27 USEG27
68 SEG28
USEG28
67 SEG29
USEG29
66 SEG30 USEG30
65 SEG31
USEG31
64 SEG32
USEG32
63 SEG33
USEG33
62
SEG34 USEG34
61 SEG35
USEG35
60 DIG4
UDIG15
59
DIG5 UDIG14
58
DIG6
UDIG13
57
DIG7
UDIG12
56
DIG8 UDIG11
55
DIG9 UDIG10
54
DIG10
UDIG09
53
DIG11
UDIG08
52
DIG12 UDIG07
51
DIG13
UDIG06
50