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Dot Character VFD Controller/Driver IC
PT6314
N=“1” 2-LINE DISPLAY, LESS THAN 40 CHARACTERS
In cases when the number of display characters is less than 40 x 2 lines, the two lines are displayed
from the head. The line end address and the second line start address are not consecutive. For
example, if only one PT6314 is being used, 24 characters x 2 lines are displayed. When the display
shift operation is performed, the DDRAM address shifts.
Display Position
Digit
DDRAM Address
(hexadecimal)
1
00
40
2
01
41
3
02
42
4
03
43
5
04
44
6
05
45
…… 23
…… 16
…… 56
24
17
57
01
41
02
42
03
43
04
44
05
45
06
46
…… 17
…… 57
18
58
For Shift-Left
27
67
00
40
01
41
02
42
03
43
04
44
…… 15
…… 55
16
56
For Shift-Right
N=“1”:2-LINE DISPLAY, 40 CHARACTERS
PT6314 can be extended using one of the 16 output extension drivers as GRID. Under this condition, a
40-character x 2 lines display may be constructed.
Display Position
Digit
DDRAM Address
(hexadecimal)
1
00
40
2
01
41
3
02
42
4
…… 23
24
17
57
25 …… 39
18 …… 26
58 …… 66
40
27
67
03 …… 16
43 …… 56
Digit
1
01
41
2
02
42
3
03
43
4
…… 23
24
18
58
25 …… 39
19 …… 27
59 …… 67
40
00
40
04 …… 17
44 …… 57
For Shift-Left
Digit
1
27
67
2
00
40
3
01
41
4
…… 23
24
16
56
25 …… 39
17 …… 25
57 …… 65
40
26
66
02 …… 15
42 …… 55
For Shift-Right
Extension Driver
Display
PT6314 Display
PT6314 V1.3
- 16 -
March, 2006
PTC [ PRINCETON TECHNOLOGY CORP ]
