Casio PCR-255 - Page 17

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BCDEFGHI JKA
BCDEFGHI JKA
— 15 —
Name
Board No. Drawing No.
E240060
ANI4
ANI5
ANI6
ANI7
AVss
P73
P74
RESET
P20
P21
P22
P23
P24
P25
P26
P27
VDD
FIP0
FIP1
FIP2
FIP3
FIP4
FIP5
FIP6
P32
P31
P30
INTP3
INTP2
INTP1
INTP0
IC
P72
P71
P70
VDD
P127
P126
P125
P124
P123
P122
P121
P120
P117
P116
P115
P114
P33 P34 P35 P36 P37
X2 X1
GND
XT2 XT1
AVref
AVdd
ANI0 ANI1 ANI2 ANI3
P113 P112 P111 P110 FIP17 FIP16 VN FIP15 FIP14 FIP13 FIP12 FIP11 FIP10 FIP9 FIP8 FIP7
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1

41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 
65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80
µPD78044AGF195-3B9
21
8 9
13 14 17 10 20 11 12 15 16 18 19
1 2 4 5 6 7 3
KI2 COM KC0 KC1 KC2 KC3 KI0 KI1 KI2 KI3 KI4 KI5 KI6 KI7 PGM RF REG CAL X Z OFF
20
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
1
2
VF
Pdp
Pg
Pf
Pe
Pd
Pc
Pb
Pa
1G
2G
3G
4G
5G
6G
7G
8G
9G
VF
VN
1 2 5 6 7 8 9
10 11 12 13 14 28 29 30 31 32 33 34 35 36 37 40 41
VF VF
10G
9G 8G 7G 6G 5G 4G 3G 2G 1G
Pa Pb
Pc
Pd Pe
Pf
Pg
Pdp
Pt1 Pt2
VF VF
REG
RF
PGM
RP
Pt
PWD
PT

PAD3
PAD2
PAD1

KI7
KI6
KI5
KI4
KI3
KI2
KI1
KI0
WMO
PMO
PHD
KC3
PADC
DRW










G1
G2
G3
G4
G5
G6
G7
KC2 KC1 KC0

Sdp
Sg
VN
Sf
Se Sd
Sc
Sb Sa
COM
G9
CAL X Z BUZZ OFF        LB
VDDGND
GND
GND
VDD
100K
ECQ-B1H103-KF
HE60TKYB222K
DSTC50TKYR103K
X2
GND
VBAT
1
LBON
CST4. 19MGW
2
3
100K
DTA143ZS
HE40TKCH100D X2
330K
C-10
(M90-76)
C-002RX
1K
5
IC4
LB1268
VP
GNDP VP
4
PKM22EPT-2001
DTC143ZS
GNDP
VP
WD2
WD1
HE40TKYB221K
2
LB1268
CRH100-FH11J-10R
7
100K
PR8
PR7
PR6
PR5
100K 100K
1K
1K
1K
GNDP GND
2200P X3
52011-0810
VP
63
DSTC50TKYR103K
SBT-0180W
ECQ-B1H103-KF
SBT-0180W
LB1268
LB1268
81
HE60TKYB222K
DSTC50TKYR103K
PR4
PR3
PR2
PR1
2
1
4
3
ISMA-9604S-4C
VDW
IL-G-2P-S3T2-E
VP
DR2
DR1
HE40TKYB221K
1SR35-100A
4.7K
75
2.2K
GNDP
2SD1961(S)
2SA933
PWD
VN
HE40TKYB101K X2
VN
VF2VN
VF1
LBDN
S-80728AN
ISMA-9604S-21C
DISP1
NC: 3, 4, 15, 16, 17, 18, 19, 20, 21 22, 23, 24, 25, 26, 27, 38, 39
10-MT-75GC
CN3 IMSA-9604S-20C
G8
PAD2
PAD1
PAD CONDITION
PAD 1
OPEN
PAD 2
OPEN

BLOCK DIAGRAM
E266-1 (1/2)
PCR-260