Read Sharp XE-A213 (serv.man4) Service Manual online
XE-A203V/A213V
HARDWARE DESCRIPTION
– 13 –
PIN
SYMBOL
I/O
External
P5
0
44
WR#
WR#
WR#
O
Vbb-PU
1
43
BHE#
N.C.
O
GND-PD
2
42
RD#
RD#
RD#
O
Vbb-PU
3
41
BCLK
BCLK
Test point
(pattern only)
(pattern only)
O
GND-PD
4
40
HOLDA#
N.C.
O
GND-PD
5
39
HOLD#
HOLD#
Pull Up
I
Vbb-PU
6
38
ALE
N.C.
O
GND-PD
7
37
RDY#
Pull Up
I
Vbb-PU
P6
0
36
CTS0#/
RTS0#
MODR
Mode key
return
return
I
GND-PD
1
35
CLK0
RJR
Feed key
return
return
I
GND-PD
2
34
RXD0
LCDON
LCD ON
O
GND-PD
3
33
TXD0
BLON
LCD back-
light ON
light ON
O
GND-PD
4
32
CTS1#/
RTS1#
LDCS#
LCD CS
O
Vcc-PU
5
31
CLK1
PCLK
Printer head
clock
clock
O
GND-PD
6
30
RXD1
PLATCH
Printer head
latch
latch
O
GND-PD
7
29
TXD1
PDATA
Printer head
data
data
O
GND-PD
P7
0
28
TXD2
PSTB1#
Printer head
strobe
strobe
O
Vcc-PU
1
27
RXD2
PSTB2#
Printer head
strobe
strobe
O
Vcc-PU
2
26
CLK2
EE
LCD IF
O
GND-PD
3
25
CTS2#/
RTS2#
R/W
LCD IF
O
GND-PD
4
24
TXD3
RS
LCD IF
O
GND-PD
5
23
RXD3
NC
O
GND-PD
6
22
CLK3
KEYKIND
Normal key/
Flat key judg-
ment
Flat key judg-
ment
I
GND-PD
7
21
CTS3#/
RTS3#
NC
O
GND-PD
P8
0
20
TA4OUT
BUZZER
Buzzer
O
GND-PD
1
19
TA4IN
DRAWER
Drawer ON/
OFF
OFF
O
-
2
18
INT0#
POFF#
Power inter-
ruption signal
ruption signal
I
Vcc-PU
3
17
INT1#
VPON
Printer power
ON
ON
O
GND-PD
4
16
INT2#
BATON
Battery volt-
age check ON
age check ON
O
GND-PD
5
15
NMI#
NC
I
Vbb-PU
6
9
XCOUT
Xcout
32.768kHz
I
-
7
8
XCIN
Xcin
32.768kHz
I
-
PIN
SYMBOL
I/O
External
P9
0
2
ATTACH
ATTACH
USB
O
-
-
-
2
100
SOF#
HDUP
Head up
I
GND-PD
3
99
Adtrg#
PEND
Paper empty
signal
signal
I
GND-PD
-
-
-
-
-
-
-
-
P10
0
98
AN0
VPRN
Printer power
voltage
voltage
I
-
1
93
AN1
HTEMP
Printer head
thermistor
thermistor
I
-
2
92
AN2
VBAT
Battery volt-
age
age
I
-
3
91
AN3
PMOTOR
Winding
Motor
Motor
O
GND-PD
4
90
AN4
ENA1
Printer motor
O
GND-PD
5
89
AN5
ENA2
Printer motor
O
GND-PD
6
88
AN6
IN1
Printer motor
O
GND-PD
7
87
AN7
IN2
Printer motor
O
GND-PD
1
Vbus-
DTCT
VbusDTCT
3
Uvcc
Vcc
4
USB D+
USB
5
USB D-
USB
6
BYTE
Vcc
7
CNVSS
H/L selection
with jumper
pin
with jumper
pin
10
RESET#
RESET#
I
11
XOUT
X'tal 16MHz
12
VSS
GND
13
XIN
X'tal 16MHz
14
VCC
VCC
60
VCC
VCC
62
VSS
GND
94
AVSS
GND
95
LPF
LPF
96
VREF
VCC
97
AVCC
VCC
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