Service manual

ER-A410U/ER-A420U HARDWARE DESCRIPTION
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3. CPU PIN TABLE
M16C/24 PORT MEMORY SPACE: NORMAL MODE
PROCESSOR MODE: MICRO PROCESSOR MODE
It is used by a separate BUS (8bit width).
PORT
PIN
No.
I/O
Pin
name
Signal
name
Initial
value
OFF
MODE
Function
P00 88 I/O D0 D0 Out L
P01 87 I/O D1 D1 Out L
P02 86 I/O D2 D2 Out L
P03 85 I/O D3 D3 Out L
P04 84 I/O D4 D4 Out L
P05 83 I/O D5 D5 Out L
P06 82 I/O D6 D6 Out L
P07 81 I/O D7 D7 Out L
P10 80 O P10 RAS L Out L RECEIPT
PAPER FEED A
P11 79 O P11 RBS L Out L RECEIPT
PAPER FEED B
P12 78 O P12 RCS L Out L RECEIPT
PAPER FEED C
P13 77 O P13 RDS L Out L RECEIPT
PAPER FEED D
P14 76 O P14 JAS L Out L JOURNAL
PAPER FEED A
P15 75 O P15 JBS L Out L JOURNAL
PAPER FEED B
P16 74 O P16 JCS L Out L JOURNAL
PAPER FEED C
P17 73 O P17 JDS L Out L JOURNAL
PAPER FEED D
P20 72 O A0 A0 Out L
P21 71 O A1 A1 Out L
P22 70 O A2 A2 Out L
P23 69 O A3 A3 Out L
P24 68 O A4 A4 Out L
P25 67 O A5 A5 Out L
P26 66 O A6 A6 Out L
P27 65 O A7 A7 Out L
P30 63 O A8 A8 Out L
P31 61 O A9 A9 Out L
P32 60 O A10 A10 Out L
P33 59 O A11 A11 Out L
P34 58 O A12 A12 Out L
P35 57 O A13 A13 Out L
P36 56 O A14 A14 Out L
P37 55 O A15 A15 Out L
P40 54 O A16 A16 Out L
P41 53 O A17 A17 Out L
P42 52 O A18 A18 Out L
P43 51 O A19 A19 Out L
P44 50 O /CS0 /CS0 Out L
P45 49 O /CS1 /CS1
Out H
P46 48 O /CS2 /CS2
Out H
P47 47 O /CS3 /CS3 Out L
P50 46 O /WR /WR Out L
P51 45 O /BHE (NU) Out L
P52 44 O /RD /RD Out L
P53 43 O BCLK BCLK Out L
P54 42 O /HLDA (NU) Out L
P55 41 I /HOLD /HOLD In
P56 40 O ALE (NU) Out L
P57 39 I /RDY /RDY In
P60 38 O /RTS0
/RS2 H In RS-232 /RS2
P61 37 O CLK0
DRAWER1 L Out L DRAWER 1
DRIVE SIGNAL
P62 36 I RXD0
RD2 In RS-232 RD2
P63 35 O TXD0
SD2 H In RS-232 SD2
P64 34 O /RTS1 /RS1 H
In RS-232 /RS1
P65 33 O P65
/EFTRES H Out L EFT RESET
SIGNAL
P66 32 I RXD1 RD1 In RS-232 RD1
P67 31 O TXD1 SD1 H
In RS-232 SD1
P70 30 O TXD2 SO L Out L PRINTER DATA
OUT
P71 29 I RXD2 SI In PRINTER DATA
IN
P72 28 O CLK2 PCLK L Out L PRINTER
CLOCK
P73 27 O P73
DRAWER2 L Out L DRAWER 2
DRIVE SIGNAL
P74 26 O P74 /ER1 H In RS-232 /ER1
P75 25 I P75 /CD1 In RS-232 /CD1
P76 24 I P76 /CS1 In RS-232 /CS1
P77 23 I P77 /DR1 In RS-232 /DR1
P80 22 O P80 BUZZER L Out L
P81 21 O P81 VHCOM L In PRINTER HEAD
CONTROL
P82 20 I /NIT0 POFF In
P83 19 I P83
/EFTC In EFT PWB connect
P84 18 O P84 /ER2 H In RS-232 /ER2
P85 17 I /NMI /NMI (NU) In
P86 11 O
XCOUT XCOUT 32.768kHz
P87 10 I XCIN XCIN 32.768kHz
P90 7 I P90 MODE In MODE KEY
SENSE
P91 6 I P91 MSENS In MISCELLA-
NEOUS SENSE
P92 5 O P92 BA1 L Out L BANK 1 SIGNAL
P93 4 O P93 BA0 L Out L BANK 0 SIGNAL
P94 3 O P94 DATA/CE L Out L LCD DATA
LATCH SIGNAL
P95 2 O P95 BLON L Out L BACK LIGHT ON
PORT
PIN
No.
I/O
Pin
name
Signal
name
Initial
value
OFF
MODE
Function