Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
Dot Character VFD Controller/Driver IC
PT6314
INSTRUCTIONS
Instruction RS
R/
W
DB DB6 DB5 DB
DB DB2 DB1 DB0
3
Description
7
4
Clear
0
Clear all display, and sets DDRAM
address at 00H
Set DDRAM address at 00H. Also
returns the display being shifted to the
original position. DDRAM contents
remain unchanged.
0
0
0
0
0
0
0
0
0
0
1
Display
Cursor
0
0
0
0
0
0
1
X
Home
Sets the cursor direction and specifies
display shift. These operations are
performed during the writing/reading
of data.
Sets all display on/off (D)
Cursor on/off (C).
Cursor blinks on character position (B)
Shifts display or cursor, also keeps
DDRAM contents.
Sets data length (in parallel data
transfer) and number of line.
Sets address of CGRAM. After which
CGRAM data is transferred.
Sets DDRAM address, after which
DDRAM data is transferred.
Entry Mode
Set
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1/D
S
Display
0
D
C
X
B
X
ON/Off
Cursor or
0
0
0
0
0
0
0
0
1
0
0
1
0
1
1
SC
N
R/L
X
Display Shift
Function Set
0
0
0
DL
BR1 BR0
CGRAM
Address Set
DDRAM
Address Set
Read Busy
Flag &
ACG
ADD
ACC
BF-
=”0”
Reads busy flag (BF) and address
counter. BF=”0”
0
1
1
1
0
1
Address
Write Data to
CGRAM or
DDRAM
Read Data to
CGRAM or
DDRAM
Writes data into the CGRAM or
DDRAM.
Write Data
Read DR Data
Reads data from CGRAM or DDRAM
Notes:
1. I/D=“1”: Increment
I/D=“0”: Decrement
2. S=”1”: Display Shift Enabled
3. D, C, B=“1”: Turn On
4. S/C=“1”: Display Shift
5. R/L=“1”: Shift to the Right
6. DL=“1”: 8 Bits
S=“0”: Cursor Shift Enabled
D, C, B=“0”: Turn OFF
S/C=”0”: Cursor Shift
R/L=“0”: Shift to the Left
DL=“0”: 4 Bits
7. N=“0”: 1-Line Display
8. BR1, BR0=“00”: 100%
BR1, BR0=”01”: 75%
N=“1”: 2-Line Display
BR1, BR0=”10”: 50%
BR1, BR0=“11”: 25%
9. X=Irrelevant
10. DDRAM: Display Data RAM
11. CGRAM: Character Generator RAM
12. ACG: CGRAM Address
13. ADD: DDRAM Address
14. ACC: Address Counter
PT6314 V1.3
- 23 -
March, 2006
PTC [ PRINCETON TECHNOLOGY CORP ]
