Sharp ER-A450T Service Manual page 12

3) Pin description
PIN SIGNAL IN/
SYMBOL
No. NAME OUT
/RES /RESET
1 IN
NMi NMi
2 IN
3 VSS VSS
4 P10 ERC OUT
5 P11 LDRQ OUT
6 P12 /SHEN IN
7 P13 /FRES OUT
8 P14 BUSY IN
9 P15 /RDY IN
10 P16 PDS IN
11 P17 IN
12 D0 D0 I/O
13 D1 D1 I/O
14 D2 D2 I/O
15 D3 D3 I/O
16 D4 D4 I/O
17 D5 D5 I/O
18 D6 D6 I/O
19 D7 D7 I/O
20 VSS VSS
21 A0 A0 OUT
22 A1 A1 OUT
23 A2 A2 OUT
24 A3 A3 OUT
25 A4 A4 OUT
26 A5 A5 OUT
27 A6 A6 OUT
28 A7 A7 OUT
29 A8 A8 OUT
30 A9 A9 OUT
31 A10 A10 OUT
32 A11 A11 OUT
33 A12 A12 OUT
34 A13 A13 OUT
35 A14 A14 OUT
36 A15 A15 OUT
37 VSS VSS
38 A16 A16 OUT
39 A17 A17 OUT
40 A18 A18 OUT
41 A19 A19 OUT
42 A20 A20 OUT
43 A21 A21 OUT
44 A22 A22 OUT
45 A23 A23 OUT
46 VSS VSS
47 /WAIT /WAIT IN
48 /BACK /BACK OUT
49 /BREQ /BREQ IN
50 P33 DOPS IN
51 P34 /DR0 OUT
52 P35 /DR1 OUT
53 P36 NU IN
54 P37 NU IN
55 VCC VCC
56 P40 /IFV IN
P41 /PTMG
57 IN
58 P42 /TOF IN
59 P43 /BOF IN
FUNCTION
RESET INPUT from CKDC WUTH
BUFFER
NON-MASKABLE INTERRUPT
INPUT FOR SSP INTERRUPT INPUT
GND
EVENT READ CANCEL (to CKDC)
LOAD REQUEST (to CKDC)
SHIFT ENABLE (from CKDC)
FISCAL MEMORY RESET (Nu)
FISCAL MEMORY BUSY (Nu)
FISCAL MEMORY READY (Nu)
POP-UP DISPLAY SENSOR (Nu)
GND
DATA BUS 0
DATA BUS 1
DATA BUS 2
DATA BUS 3
DATA BUS 4
DATA BUS 5
DATA BUS 6
DATA BUS 7
GND
ADDRESS BUS 0
ADDRESS BUS 1
ADDRESS BUS 2
ADDRESS BUS 3
ADDRESS BUS 4
ADDRESS BUS 5
ADDRESS BUS 6
ADDRESS BUS 7
ADDRESS BUS 8
ADDRESS BUS 9
ADDRESS BUS 10
ADDRESS BUS 11
ADDRESS BUS 12
ADDRESS BUS 13
ADDRESS BUS 14
ADDRESS BUS 15
GND
ADDRESS BUS 16
ADDRESS BUS 17
ADDRESS BUS 18
ADDRESS BUS 19
ADDRESS BUS 20
ADDRESS BUS 21
ADDRESS BUS 22
ADDRESS BUS 23
GND
Wait signal from MPCA
Bus control request acknowledge
Bus control request
Drawer open sensor signal
Drawer open drive signal
Option drawer 1 drive signal
(Nu) GND
(Nu) GND
+5V
(Nu) pull-up
Printer (PR-45) timing signal from
MPCA
(Nu) pull-up
(Nu) pull-up
PIN SIGNAL
SYMBOL
No. NAME
P44 /PRST
60
61 P45 /NEJ
62 P46 NU
63 P47 /NER
64 VSS VSS
65 P50 TRG1
66 P51 /PSTOP
67 P52 /CKDCR2
68 P53 OPDS
69 P54 FVPON
70 P55 FMRS
71 P56 /SLIPLMP
72 P57 /STOP
P60 /ERS
73
74 P61 /DRS
75 P62 /CSS
76 P63 /CDS
P64 /RR
77
P65 /RSS
78
79 P66 (/RI), /CI
80 P67 HP
81 VSS VSS
82 AVSS AVSS
83 AN0 Vrf
84 AN1 VHTEST
85 AN2 VPTEST
86 AN3 TM
87 AVCC AVCC
88 VCC VCC
89 P80 /iRQ0
P81 /iRQ1
90
(/RSRQ)
91 P82 /iRQ2
92 P83 SCK2
93 P84 RXD
94 P85 TXD
P86 RXD2
95
P87 TXD2
96
97 VSS VSS
98 EXTAL EXTAL
99 XTAL XTAL
100 VSS VSS
101
102 E
103 /AS /AS
104 /RD /RD
105 /HWR /WR
106 /LWR
107 /RFSH /RFSH
108 VCC VCC
109 MD0 MD0
110 MD1 MD1
111 MD2 MD2
112 /STBY /STBY
4 – 4
IN/
FUNCTION
OUT
Printer (PR-45) Reset signal from
IN
MPCA
IN Near END signal journal
IN (NU) GND
IN Near END signal receipt
GND
OUT Nu (GND)
OUT Nu (GND)
OUT Nu (GND)
IN Nu (GND)
OUT Nu (GND)
IN Nu (GND)
OUT Nu (GND)
OUT Nu (GND)
ER signal for RS232 (Equipment
OUT
Ready)
IN DR signal for RS232 (Data set Ready)
IN CS signal for RS232 (Clear to Send)
IN CD signal for RS232 (Carrier Detect)
RR signal for RS232 (Ready to
OUT
Receive) (Nu)
RS signal for RS232 (Request to
OUT
Send)
IN CI signal for RS232 (Calling Indicator)
IN Nu (GND)
GND
IN GND
IN Vrf
IN VH Test input
IN +24V test input
IN Thermal head thermistor level test
IN +5V
+5V
IN Interrupt signal 0 from MPCA
Interrupt signal from OPTION PWB
IN
IN Interrupt signal (Nu) pull-up
OUT CKDC & FMC i/F sync shift clock
IN RS232C RECEIVE DATA
OUT RS232C SEND DATA
CKDC, Fiscal memory unit I/F shift
IN
input data
CKDC, Fiscal memory unit I/F shift
OUT
output data
GND
IN X-TAL (19.66MHz)
IN X-TAL (19.66MHz)
GND
OUT System clock (9.83MHz)
OUT E clock (NU)
OUT Address strobe
OUT Read
OUT Write
OUT Nu
OUT Refresh cycle (NU)
+5V
IN +5V (MODE 3)
IN +5V (MODE 3)
IN GND (MODE 3)
IN +5V (Nu)