Sharp ER-A520 - Printer Operations; Printer Description

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