Sharp XE-A212 Service Manual ▷ View online
XE-A212V
HARDWARE DESCRIPTION
– 8 –
4. CPU
• M16C/64A Group: M30620SAFP
• Processor mode = Microprocessor mode
• Internal reserve area, without expansion
• Multi function 16-bit Timer: Output system 5 lines + input system 6 lines
• Serial I/O:
M16C/64A PORT MEMORY SPACE: NORMAL MODE
PROCESSOR MODE: MICRO PROCESSOR MODE
It is used by (SEPARATE BUS 8bit Width)
It is used by (SEPARATE BUS 8bit Width)
PORT
PIN
No.
I/O
Pin
name
Signal
name
Initial
value
value
OFF
MODE
Function
PORT
PIN
No.
I/O
Pin
name
Signal
name
Initial
value
value
OFF
MODE
Function
P00
88
I/O
D0
D0
Out L
P54
42
O
/HLDA
(NU)
Out L
P01
87
I/O
D1
D1
Out L
P55
41
I
/HOLD
/HOLD
In
P02
86
I/O
D2
D2
Out L
P56
40
O
ALE
(NU)
Out L
P03
85
I/O
D3
D3
Out L
P57
39
I
/RDY
/RDY
In
P04
84
I/O
D4
D4
Out L
P60
38
O
/RTS0
/RS2
H
In
RS-232 /RS2
P05
83
I/O
D5
D5
Out L
P61
37
O
CLK0
N.U. (FSCK)
L
Out L
FMC DSCK
P06
82
I/O
D6
D6
Out L
P62
36
I
RXD0
RD2
In
RS-232 RD2
P07
81
I/O
D7
D7
Out L
P63
35
O
TXD0
SD2
L
Out L
RS-232 SD2
P10
80
O
P10
/PLCS
H
Out L
Pop up LCD
Chip Select
P64
34
O
/RTS1
/RS1
H
Out L
RS-232 /RS1
P11
79
O
P11
/PLRD
H
Out L
Pop up LCD
Read clock
P65
33
I
P65
IPL ON
In
IPL ON Signal
P12
78
O
P12
/PLWR
H
Out L
Pop up LCD
Write clock
P66
32
I
RXD1
RD1
In
RS-232 RD1
P13
77
O
P13
PLDATA
L
Out L
Pop up LCD
serial DATA
P67
31
O
TXD1
SD1
H
Out L
RS-232 SD1
P14
76
O
P14
IN1
L
Out L
Paper feed
motor (IN1)
P70
30
O
TXD2
DAT
L
Out L
PRINTER DATA OUT
P15
75
O
P15
IN2
L
Out L
Paper feed
motor (IN2)
P71
29
I
RXD2
N.U. (BUSY)
In
PRINTER DATA IN
P16
74
O
P16
ENA1
L
Out L
Paper feed
motor (ENA1)
motor (ENA1)
P72
28
O
CLK2
PCLK
L
Out L
PRINTER CLOCK
P17
73
O
P17
ENA2
L
Out L
Paper feed
motor (ENA2)
motor (ENA2)
P73
27
O
P73
DRAWER 1
L
Out L
DRAWER DRIVE SIGNAL
P20
72
O
A0
A0
Out L
P74
26
O
P74
/ER1
H
Out L
RS-232 /ER1
P21
71
O
A1
A1
Out L
P75
25
I
P75
/CD1
In
RS-232 /CD1
P22
70
O
A2
A2
Out L
P76
24
I
P76
/CS1
In
RS-232 /CS1
P23
69
O
A3
A3
Out L
P77
23
I
P77
/DR1
In
RS-232 /DR1
P24
68
O
A4
A4
Out L
P80
22
O
P80
BUZZER
L
Out L
P25
67
O
A5
A5
Out L
P81
21
O
P81
MOTOR
L
In
Printer winding motor
P26
66
O
A6
A6
Out L
P82
20
I
/INT0
/POFF
In
Power interruption
P27
65
O
A7
A7
Out L
P83
19
O
/INT1
/WP
H
Out L
FROM /WP
P30
63
O
A8
A8
Out L
P84
18
O
P84
/STB2
H
In
PRINTER /STB2
P31
61
O
A9
A9
Out L
P85
17
I
/NMI
(NU)
In
P32
60
O
A10
A10
Out L
P86
11
O
XCOUT
XCOUT
32.768kHz
P33
59
O
A11
A11
Out L
P87
10
I
XCIN
XCIN
32.768kHz
P34
58
O
A12
A12
Out L
P90
7
I
P90
MDR
In
MODE KEY SENSE
P35
57
O
A13
A13
Out L
P91
6
I
P91
MSENS
In
MISCELLANEOUS SENSE
P36
56
O
A14
A14
Out L
P92
5
O
P92
BR1
L
Out L
BANK signal1
P37
55
O
A15
A15
Out L
P93
4
O
P93
BR0
L
Out L
BANK signal0
P40
54
O
A16
A16
Out L
P94
3
O
P94
/LDCS
H
Out L
LCD DATA LATCH signal
P41
53
O
A17
A17
Out L
P95
2
O
P95
BLON
L
Out L
BACK LIGHT ON
P42
52
O
A18
A18
Out L
P96
1
O
P96
LCDON
L
Out L
LCD POWER ON
P43
51
O
A19
A19
Out L
P97
100
O
P97
BR2
L
Out L
BANK singal2
P44
50
O
/CS0
/CS0
Out H
P100
97
I
AN0
TM
In
HEAD temperature monitor
P45
49
O
/CS1
/CS1
Out H
P101
95
I
AN1
VPTEST
In
HEAD voltage monitor
P46
48
O
/CS2
/CS2
Out H
P102
94
I
AN2
VREF
In
Referance voltage
P47
47
O
/CS3
/CS3
Out L
External I/O
Chip Select
P103
93
I
AN3
VBAT
In
VBAT (Battery voltage)
P50
46
O
/WR
/WR
Out L
P104
92
O
AN4
/ER2
H
In
RS-232 /ER2
P51
45
O
/BHE
(NU)
Out L
P105
91
O
P105
VPON
L
Out L
PRINTER HEAD POWER
P52
44
O
/RD
/RD
Out L
P106
90
O
P106
/LAT
H
In
PRINTER DATA LATCH
P53
43
O
BCLK
BCLK
Out L
P107
89
O
P107
/STB1
H
In
PRINTER /STB1
XE-A212V
HARDWARE DESCRIPTION
– 9 –
<Power supply/CONTROL pins>
5. KEY-DISPLAY
5-1. LCD CONTROL
Basically the same as the XE-A401 and ER-A275P.
<LCD-related registers>
< LCD Control Signal / Key Strobe Signal >
Bit7 : Not used
Bit6 : E
Enable Signal
Enable
Bit5 : R/W
H : Data read
L : Data Write
Bit4 : RS
H : Data input L : Instruction Input
< Data Latch Signal >
L : LCD write data latch
5-2. KEY/DISPLAY SCAN
On the machine, the key and display scan signal is common.
KEY/display SCAN and key read should be performed at the following
timing.
1
KEY/display SCAN cycle: 10ms
2
Blanking time: 50us
3
KEY DATA READ timing: More than 10 ms from the fall of the SCAN
signal
<Key/Display-related registers>
< LED Segment Signal >
…
…
…
…
Wite
< LCD Control Signal/Key Strobe Signal >
…
…
…
…
Write
Bit3 ~ 0 : KS3 ~ 0
Strobe signals for keys and POP UP Display are generated at KS3 - 0.
< Key Return Signal >
…
…
…
…
Read
Normal Keyboard : 04003h
Flat Keyboard : 04001h + 04003h
PORT
PIN
No.
I/O
Pin name
Function
PORT
PIN
No.
I/O
Pin name
Function
BYTE
8
I
BYTE
Connected to VDD
Vcc
62
Vcc
Connected to VDD
CNVss
9
I
CNVss
Connected to VDD
Vss
64
Vss
connected to GND
/RESET
12
I
/RESET
AVss
96
AVss
Connected to GND
Xout
13
O
Xout
OPEN
Vref
98
Vref
Connected to VDD
Vss
14
Vss
Connected to GND
AVcc
99
AVcc
Connected to VDD
Xin
15
I
Xin
connected to Spectram diffusion IC
Vcc
16
Vcc
Connected to VDD
Function
Address
R/W
LCD Write Data
04001h
W
LCD Read Data
04002h
R
LCD Control Signal / Key Strobe Signal
04003h
W
Data Latch Signal
CPU port P94
W
Address
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
04003h
–
E
R/W
RS
KS3
KS2
KS1
KS0
Function
Address
R/W
LED Segment Signal
04000h
W
LCD Control Signal / Key Strobe Signal
04003h
W
Key Return Signal
04003h
R
Address
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
04000h
dp
g
f
e
d
c
b
a
Address
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
04003h
-
E
R/W
RS
KS3
KS2
KS1
KS0
Address
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
04001h
-
-
-
-
KR11
KR10
KR9
KR8
04003h
KR7
KR6
KR5
KR4
KR3
KR2
KR1
KR0
XE-A212V
HARDWARE DESCRIPTION
– 10 –
5-3. KEYSCAN MATRIX
PENDING
Others
5-4. DISPLAY
The machine has an LCD display, 5 x 7 dots, 2 lines, 16digits, at the
front side and a 7-digit LED at the pop-up side
front side and a 7-digit LED at the pop-up side
FRONT:
POP UP:
• Display DIGIT signal
The above ST0 ~ ST6 are display digit signals.
ST0: 1st digit ~ ST6: 7th digit
• Display SEGMENT signal
The LED segment signal is outputted by writing SEGMENT data in
the /CS3 space.
Correspondence of DATA ~ SEGMENT
D0 ~ D6
3
a ~ g
D7
3
DP
6. POWER SUPPLY
7. REWRITING FLASH MEMORY
IPL from EP-ROM: After IPL SW is set to ON side the program is
started from EP-ROM by turning on the power.
The program on EP-ROM is transferred to flash
ROM by switching the banks through S-RAM.
IPL from COM:
Data from the PC is written to flash ROM through
the COM port. (Max. 38.4 kbps)
the COM port. (Max. 38.4 kbps)
8. DRAWER
The machine has a 1 channel of drawer port.
No open sensor is provided.
The driving time for the DRAWER solenoid are as follows:
50ms (max) 45ms (min)
50ms (max) 45ms (min)
CPU
STO
ST1
ST2
ST3
ST4
ST5
ST6
ST7
ST8
ST9
MODE
P90
SRV
PGM
Time
REG
MGR
X1/Z1
X2/Z2
KEYBD
Others
P91
PF
HEAD
UP
PE
DRAWER
OPEN
RS-232
CI1
KEYBD
: 1=Normal Keyboard/0=Flat Keyboard
HEAD UP
: 1=Up/0=Down
PE
: 1=Paper End/0=Paper Not End
DRAWER OPEN : Reserved (1=Open/0=Close)
RS-232 CI1 :
No.
I/O
PORT
Function
Signal Name
Initial value
27
OUT
P73
Drawer Drive Signal
L
LM2574
+ Tr.
+ Tr.
Drawer
VLED 5.7V
VCC
PRINTER HEAD, MOTOR
VDD
VDRW 24V
5V
5V
VH 8V
Batterry
TRANS.
PQ1CG203
PQ1CG203
(MODE SW, /POFF, CPU P105)
BA00ASFP
VLMP 4.3V
LCD
After detection of /POFF, power interruption must be executed within 10ms.
/POFF
detection point
detection point
ON/OFF control (MODE SW)
ON/OFF control
Winding motor
XE-A212V
HARDWARE DESCRIPTION
– 11 –
9. A/D CONVERSION
The machine has the following four signals at the A/D conversion ports.
<CPU’s
PORT>
1
Printer head temperature monitor
A voltage divided by the printer head temperature monitoring ther-
mistor and the resistor is inputted to AN0 pin.
Printer head conduction must be controlled as shown below. For
the printer head conduction time, refer to the M-T53
II
specifica-
tions.
2
Printer head voltage monitor
A voltage supplied by the printer head power through the printer
and divided by the resistor is inputted to AN1 pin. The A/D conver-
and divided by the resistor is inputted to AN1 pin. The A/D conver-
sion value is read after turning the VPON signal (CPU P105) to
HIGH and stabilizing the voltage (20msec).
The print enable voltage range is 7.5V ~ 8.0V (A/D value: ??? ~
???). The voltage is calculated from the AN1 value and the A/D
???). The voltage is calculated from the AN1 value and the A/D
conversion value of the AN2 reference voltage. For the calculation
method, refer to the M-T53
II
specifications.
3
Reference voltage
The CPU power VDD is used as the reference voltage.
4
Battery remaining voltage
10. BUZZER
PIEZO type BUZZER
The oscillating frequency is 4.0kHz
m
0.5kHz
11. RESET
The RESET signal is canceled when the power source of the device
which used the 5V system (VCC, VDD, VLED) reaches the operating
voltage.
voltage.
The RESET signal is generated under the following conditions.
1) When the mode key switch is set from SRV' to another position
(except for OFF position).
2) When the power is turned on after 5sec or more from turning off the
power and the VCC reaches 5V.
3) When the mode key switch is set from OFF position to another posi-
tion (except for SRV’ position) and VCC reaches 5V. (If the OFF
time is within 5sec, the RESET signal may not be supplied.)
12. POFF
The POFF signal is changed from 0 to 1 when the 5V power and the
24V power reach the operating voltage level. When they fall below the
operating voltage level, the POFF signal is changed from 1 to 0.
operating voltage level, the POFF signal is changed from 1 to 0.
<POFF, RESET TIMING CHART>
In the model where a dry cell is used as the bakc-up battery, the CPU
monitors the battery voltage when it operates. When the voltage falls
below 2.8V, the RESET signal is supplied to prevent against malfunc-
tion of the CPU.
tion of the CPU.
No.
CPU
PORT
Signal
name
FUNCTION
97
AN0
TM
PRINTER HEAD temperature monitor
95
AN1
VPTEST
PRINTER HEAD voltage monitor
94
AN2
VREF
Refarence voltage
93
AN3
VBAT
VBAT (Battery voltage)
HEAD
tempreture
A/D conversion
value (DEC)
Operation
-10°C or below
929~1023
MOTOR LOCK
-10°C ~ 0°C
869~928
Print in conduction time at 0°C
0°C ~ 70°C
232~868
Print in conduction time specified
in the PR-45M specifications.
in the PR-45M specifications.
70°C or above
0~231
MOTOR LOCK
NO BATTERY
3.0V
LOW BATTERY 3.3V
+5V
+24V
/POFF
4.5V
20.8V
POWER ON
POWER OFF
MOMENTARY
STOP
STOP
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