— 23 —
3-10. CHARACTER GENERATOR CIRCUIT
The character generator is a PTJCG2(Japanese).
Chip select is the CS10#, deta read select is the RD#.
PIN connection.
VCC
D4
D11
D3
A1
D15
D12
D14
A16
A18
A7
D7
D1
D10
A19
A4
A10
D9
A20
A9
A14
A5
A8
A15
D6
D13
D8
CS10#
RD#
D0
A2
A3
A11
D5
A17
A12
D2
A6
A13
R66
10K
U7
PTJCG2
A3
8
A2
9
A1
10
A0
11
CE
12
A19
43
GND
13
OE
14
D0
15
D8
16
D1
17
D9
18
D2
19
D10
20
D3
21
D11
22
NC
44
VDD
23
D4
24
D12
25
D5
26
D13
27
D6
28
D14
29
D7
30
D15/A-1
31
GND
32
NC
1
BYTE
33
A16
34
A15
35
A14
36
A13
37
A12
38
A11
39
A10
40
A9
41
A8
42
A18
2
A17
3
A7
4
A6
5
A5
6
A4
7
3-11. PRINTER CIRCUIT
Printer is thermal printer.
Printing data is clocked serial from the CPU. Control signal are HDAT,HCLK and HLAT#.
Printings on signal are the RHSTB0 and RHSTB1, two-division control.
Temperature sensor of Printer Head is connected to the RTH and THE#.
HVP
VCC
VCC
VCC
VCC
VCC
VCC
RTH
HLAT#
HCLK
HDATA
RHSTB0
RHSTB1
HTE#
Head
C44
0.1uF
U14A
uPC393G2
1
2
3
4
8
R116
16K
1%
R115
22K
1%
R122
3K
1%
C45
0.1uF
C43
0.1uF
R117
10K
D 1
1SS355
D 2
1SS355
U15
SN74LV541ANSR
A1
2
A2
3
A3
4
A4
5
A5
6
A6
7
A7
8
A8
9
G1
1
G2
19
Y 1
18
Y 2
17
Y 3
16
Y 4
15
Y 5
14
Y 6
13
Y 7
12
Y 8
11
R132
10K
R131
10K
R112
0
R119
0
R114
0
R118
0
R113
0
R111
0
J 1
HLEM28S-1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28