XE-A203U/XE-A203A
HARDWARE DESCRIPTION
– 10 –
7-1. PRINTER HEAD TEMPERATURE MONITOR
The voltage divided by the thermistor for detecting the printer head tem-
perature and the resistor is inputted to the AN0 pin.
7-2. PRINTER HEAD VOLTAGE MONITOR
The voltage supplied by the printer head power and passed through the
printer and divided by the resistor is inputted to the AN1 pin.
The printable voltage range for the printer is 140~252 in A/D conversion
value.
7-3. BATTERY VOLTAGE MONITOR
The voltage of VDD is inputted to AN3 pin. For an A/D value of 189
(3.69V) or less, it is judged as LOW BATTERY. For 174 (3.40V) or less,
it is judged as NO BATTERY.
8. KEY/DISPLAY
The front display is of 10 digits of LED, and the POPUP display is of 7
digits of LED.
<KEY/DISPLAY COMPOSITION>
8-1. LED DIGIT SIGNAL
The above /S0~/S9 are considered as LED DIGIT signals.
S0#: First digit~S9#: 10th digit (For the POPUP side, ST0~ST6 are used.)
8-2. LED SEGMENT SIGNAL
By writing the segment data to 30000h, the LED segment signal can be
outputted.
Data~Segment correspondence
8-3. CPU PORT AND REGISTER
<POPUP DISPLAY-RELATED RESISTER>
<LED SEGMENT SIGNAL WRITE>
<CPU PORT>
Strobe signals of /S0~/S9 are made by using SN74HC138 from KST0~KST3
signals.
<OTHERS CPU PORT>
9. POWER
10. DRAWER
The XE-A203U/A203A is provided with 1CH of a drawer port.
*
The drawer solenoid drive time is as follow: 55ms (max) 50ms (min)
Head
temperature
A/D conversion
value (DEC)
Operation
Less than -10°C
929~1023
Motor lock
-10°C ~
Less than 0°C
869~928
Print in the conduction time at 0°C.
0°C ~
Less than 70°C
232~868
Print in the conduction time speci-
fied on the MT-T53
II
specifications.
70°C or above
0~231
Motor lock
D0~D6
3
a~g
D7
3
DP
FRONT:
POP UP:
ST0#
㨪
ST9#
HC138
KS0
㨪
KS3
Front Display
10 segment
POPUP Display
㧣
segment
Keyboard / MODE SW
MATRIX
ST0#
㨪
ST9#
HC374
D0
㨪
D7
a
㨪
g, dp
P90
㨪
P97
CPU
/CS0 30000h
Function
Address
R/W
LED Segment Signal
30000h
W
Address
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
30000h
dp
g
f
e
d
c
b
a
PIN No.
PORT
Use signal
Function
80
P10
KST0
Key strobe signal 0
79
P11
KST1
Key strobe signal 1
78
P12
KST2
Key strobe signal 2
77
P13
KST3
Key strobe signal 3
ST0 ST1 ST2
ST3
ST4
ST5 ST6 ST7 ST8 ST9
MODE P90 SRV PGM
Time
REG MGR X1/
Z1
X2/
Z2
P91
PF
HEAD
UP
Out of
paper
PIN No.
PORT
Use signal
Function
38
P60
DR1
Drawer drive signal
VO 24V
(DRAWER)
VDD 5.0V
VCC 5.0V
Battery
POFF# detect
point
TRANS.
PQ1CG203
PQ1CG203
LM2574
+ Tr
.
VP 8V
PRINTER head
Motor
ON/OFF Control
(MODE SW
POFF#
VPON)
ON/OFF Control
(MODE SW)
After occurrence of POFF#, the power
interruption must be made within 10ms.
VLED 5.7V
BA033
VCC
3.3V
