Sharp ER-A530 Service Manual download pdf (Page 10)

ER-A520U/ER-A530U HARDWARE DESCRIPTION

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POWER SUPPLY/CONTROL PINS

P91 6 P91/

RxD3

STH I − In UP-P16DP STH

SIGNAL

P92 5 P92/

TxD3

HTS O L Out L UP-P16DP HTS

SIGNAL

P93 4 P93/

RTS3#

DRAWER1

O L Out L DRAWER 1

DRIVE SIGNAL

P94 3 P94/

RTS4#

DRAWER2

O L Out L DRAWER 2

DRIVE SIGNAL

P95 2 P95/

CLK4

PCLK O L Out L PRINTER

CLOCK

P96 1 P96/

TxD4

SO O L Out L PRINTER DATA

OUT

P97 144 P97/

RxD4

SI I − In PRINTER DATA

IN

P100 141 P100/

AN0

TM I − In

PRINTER HEAD

TEMPERATURE

MONITOR

P101 139 P101/

AN1

VPTEST I − In PRINTER HEAD

VOLTAGE MON-

ITOR

P102 138 P102/

AN2

VREF I − In REFERENCE

VOLTAGE

P103 137 P103/

AN3

PHUPS I − In

PRINTER HEAD

UP DETECTION

P104 136 P104/

AN4

RPES I − In

PRINTER

RECEIPT PAPER

EMPTY DETEC-

TION

P105 135 P105/

AN5

JPRS I − In

PRINTER JOUR-

NAL PAPER

EMPTY DETEC-

TION

P106 134 P106/

AN6

VHCOM O L Out L

PRINTER

POWER CON-

TROL

P107 133 P107/

AN7

I − In NOT USED

P110 118 P110 STRB1# O H In PRINTER

STROBE 1

P111 117 P111 STRB2# O H In PRINTER

STROBE 2

P112 116 P112 STRB3# O H In PRINTER

STROBE 3

P113 115 P113 STRB4# O H In PRINTER

STROBE 4

P114 114 P114 LATCH# O H In PRINTER

LATCH

P120 90 P120 BLON O L Out L LCD BACK

LIGHT ON

P121 89 P121 LCDON O L Out L LCD POWER

ON

P122 88 P122 LRS O L Out L LCD RS

P123 87 P123 LR/W# O L Out L LCD R/W#

P124 86 P124 LE O L Out L LCD ENABLE

P125 68 P125 LWDL O L Out L LCD WRITE

DATA LATCH

P126 67 P126 IPLON0 I − In IPL from ROM

P127 66 P127

O − Out L NOT USED

P130 61 P130 ER2# O H In RS-232 ER2

P131 60 P131 CD2# I − In RS-232 CD2

P132 58 P132 CS2# I − In RS-232 CS2

P133 56 P133 DR2# I − In RS-232 DR2

PORT

PIN

No.

Pin

name

Signal

name

I/O

Initial

value

After

POFF

Function

P134 51 P134 ER1# O H In RS-232 ER1

P135 50 P135 CD1# I − In RS-232 CD1

P136 49 P136 CS1# I − In RS-232 CS1

P137 48 P137 DR1# I − In RS-232 DR1

P140 14 P140 KR8# I − In KEY RETURN

SIGNAL 8

P141 13 P141 KR9# I − In KEY RETURN

SIGNAL 9

P142 12 P142 MODE# I − In MODE KEY

RETURN SIG-

NAL

P143 11 P143 FSR# I − In FEED SENSE

SIGNAL

P144 10 P144 WP# I − In Flash ROM WP#

P145 9 P145 RY/BY# I − In NOT USED

P146 8 P146 CKDCR O

H In UP-P16DP

RESET SIGNAL

P150 131 P150 KS0 O L Out L KEY STROBE

SIGNAL 0

P151 129 P151 KS1 O L Out L KEY STROBE

SIGNAL 1

P152 128 P152 KS2 O L Out L KEY STROBE

SIGNAL 2

P153 127 P153 KS3 O L Out L KEY STROBE

SIGNAL 3

P154 126 P154 LEDS0 O L Out L LED STROBE

SIGNAL 0

P155 125 P155 LEDS1 O L Out L LED STROBE

SIGNAL 1

P156 124 P156 LEDS2 O L Out L LED STROBE

SIGNAL 2

P157 123 P157 LEDS3 O L Out L LED STROBE

SIGNAL 3

PORT PIN No. I/O PIN NAME FUNCTION

Xin 22 I Xin SYSTEM CLOCK IN

Xout 20 O Xout NC

RESET# 19 I RESET# RESET

BYTE 15 I BYTE Connected to VDD

CNVss 16 CNVss Connected to VDD

Vref 142 Vref Connected to VDD

PORT

PIN

No.

Pin

name

Signal

name

I/O

Initial

value

After

POFF

Function

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 32 33

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