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Dot Character VFD Controller/Driver IC
PT6314
“DISPLAY ON/OFF” INSTRUCTION
RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
CODE
0
0
0
0
0
0
1
D
C
B
The above instruction controls the various display features:
D=“1”: Display ON
C=“1”: Cursor ON
B=“1”: Blinking ON
D=“0”: Display OFF
C=“0”: Cursor OFF
B=”0”: Blinking OFF
Blinking is achieved by alternating a normal and an all “ON” display of a character. The cursor blinks
with a frequency of approximately 1 Hz and 50% duty.
BLINK
(1Hz)
Cursor Line
During Reset,
DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0
0
0
0
1
0
0
0
“Cursor or Display Shift” Instruction
RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
S/C R/L
CODE
0
0
0
0
0
1
X
X
The instruction above will shift the display and/or move the cursor one character to the left or right,
without DDRAM reading or writing.
“S/C” Bit selects between the movement of both cursor and display or the movement of the cursor
alone. When “S/C”=”1” the cursor and the display are both shifted. When “S/C”=”0” only the cursor is
shifted.
The “R/L” Bit selects the left or right movement direction of the cursor and/or display. When “R/L”=”1”
the cursor and/or display is shifted one character to the right. When “R/L” is ”0” the cursor and/or
character is shifted to the left.
PT6314 V1.3
- 26 -
March, 2006
PTC [ PRINCETON TECHNOLOGY CORP ]
