Service manual
ER-A242U HARDWARE DESCRIPTION
– 7 –
2. DESCRIPTION OF MAIN LSI’S
2-1. CPU (M30624FGAFP)
1) Pin configuration
2) Pin description
V0 24V
VCC 5V
Drawer
TRANSFORMER
PQ1CG2032
VLED 5.7V
VDD 5V
Battery
ON/OFF Control (MODE SW)
LM2574
+ Tr.
PRINTER HEAD, MOTOR
VH, VP (8V)
PAPER TAKEUP MOTOR
ON/OFF Control (MODE SW,
/POFF, CPU P105)
/POFF detect point
PQ1CG2032
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
P96
P95
P94
P93
P92
P91
P90
VDD
GND
XCIN
XCOUT
/RESET
XOUT
GND
XIN
VDD
VDD
CTCRL
/FRDY
P-OFF
MOTOR
BUZ1
P77
P76
P75
TA2OUTW
TA1IN/V
TA1OUT/V
TB5IN
TB5OUT
TXD1
RXD1
CLK1
CLKS1
TXD0
RXD0
CLK0
/RTS0
/RDY
ALE
/HOLD
/HLDA
CBCLK
/RD
/BHE
/WR
/CS3
/CS2
/CS1
/CS0
P74
P73
CLK
P71
DAT
P67
P66
/FRES
P64
FSD
FRD
FSCK
DR1
/RDY
/
HOLD
VCC
NC
NC
/RD
NC
/WR
/CS3
/RAS1
BUSY
/ROS1
SOUT4
CLK4
TB4IN
TB3IN
SOUT3
SIN3
CLK3
BYTE
CNVss
XCIN
XCOUT
/RESET
XOUT
Vss
XIN
Vcc
NMI
INT2
INT1
INT0
TA4IN/U
TA4OUT/U
TB3IN
TBEOUT
TA2INW
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
50
58
57
56
55
54
53
52
51
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
100
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
80
79
78
77
76
NC
NC
A17
A16
A15
A14
A13
A12
A11
A10
A9
VDD
A8
GND
A7
A6
A5
A4
A3
A2
A1
A0
PH4
PH3
PH2
A19
A18
A17
A16
A15
A14
A13
A12
A11
A10
A9
VCC
A8
VSS
A7
A6
A5
A4
A3
A2
A1
A0
D15
D14
D13
PH1
P13
P12
P11
P10
D7
D6
D5
D4
D3
D2
D1
D0
DTS
LATCH
P105
P104
P103
Vref
P101
GND
TH
VDD
VDD
P97
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
AN7
AN6
AN5
AN4
AN3
AN2
AN1
AVSS
AN0
VREF
AVCC
SIN4
M30624FGAFP
Pin
No.
SYMBOL
SIGNAL
NAME
In/
Out
Function
1 SOUT4 P96 In Key IN
2 CLK4 P95 In Key IN
3 TB4IN P94 In Key IN
4 TB3IN P93 In Key IN
5 SOUT3 P92 In Key IN
6 SIN3 P91 In Key IN
7 CLK3 P90 In Key IN
8 BYTE VDD In VDD
9 CNVss CNVss In Normal : L Booting : H
10 XCIN XCIN In Calender clock :32.768KHz
11 XCOUT XCOUT In Calender clock :32.768KHz
12 /RESET /RESET In Reset
13 XOUT XOUT Out Open
14 Vss Vss In Vss
15 XIN XIN In System clock
16 Vcc VDD In VDD
17 NMI P85 In Not used
18 INT2 P84 Out PRINTER/STB2
19 INT1 /RDY In NU FMC (/RDY)
20 INT0 P-OFF In Power off
21 TA4IN/U MOTOR Out Paper take up motor drive
22 TA4OUT/U BUZ1 Out Buzzer drive
23 TB3IN P77 In RS232 :DR
24 TBEOUT P76 In RS232 :CS
25 TA2INW P75 In RS232 :CD
26 TA2OUTW P74 Out RS232 :ES
27 TA1IN/V P73 Out Drawer drive 2
28 TA1OUT/V CLK2 Out Printer data clock
29 TB5IN P71 Out NU FMC (BUSY)
30 TB5OUT TXD2 Out Print data
31 TXD1 P67 Out RS232 :SD
32 RXD1 P66 In RS232 :RD
33 CLK1 /FRES Out NU FMC (/FRES)
34 CTS1/RTS1 P64 Out RS232 :RS
35 TXD0 FSD Out FMC :Send data
36 RXD0 FRD In FMC :Receive data
37 CLK0 FSCK Out FMC :Shift clock
38 /RTS0 DR1 Out Drawer drive 1
39 CLKOUT /RDY In /RDY (CGROM)
40 ALE NC Out NOT USE
41 /HOLD /HOLD In /BOOT MODE
42 /HLDA NC Out NOT USE
43 CBCLK BCLK Out BCLK
44 /RD /RD Out Read
45 /BHE NC Out NOT USE
46 /WR /WR Out Write
47 /CS3 CS3 Out Display segment latch
48 /CS2 /CS2 Out Chip select :for RAM
49 /CS1 /CS1 Out EPM Control
50 /CS0 /CS0 Out Chip select : for ROM
51 A19 A19 Out Address bus :19
52 A18 A18 Out Address bus :18