PT6314-001L PTC [Princeton Technology Corp], PT6314-001L Datasheet - Page 28

• Manufacturer Part Number: PT6314-001L
• Description: Dot Character VFD Controller/Driver IC
• Manufacturer: PTC [Princeton Technology Corp]

Dot Character VFD Controller/Driver IC
“FUNCTION SET” INSTRUCTION
The instruction above sets the data length of the data bus lines. This instruction initializes the system,
and must be the first instructed executed after power is turned ON.
The “DL” and “N” settings are described below:
“DL”=”1”: 8-bit MCU Interface using DB7 to DB0
“DL”=”0”: 4-bit MCU Interface using DB7 to DB4
“N”=”0”: 1-Line Display using SG1 to SG40. (SG41 to SG80 are fixed at “Low Level”)
“N”=”1”:2-Line Display using SG1 to SG80
x = Not Relevant
BR1 and BR0 flags are used to modulate the pulse width of the Segment Output thereby controlling the
VFD brightness.
tDSP ≒ 200 µ s, tBLK ≒ 10 µ s
where n = number of Grid, T =n x (tDSP + tBLK)
During Reset,
PT6314 V1.3
CODE
BR1
0
0
1
1
SGn
RS
0
Gn
G1
DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0
R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
BR0
tBLK
0
0
1
0
1
tDSP
0
tp
0
1
Brightness
tBLK
0
100%
75%
50%
25%
- 28 -
1
1
T
1
DL
0
N
tDSP x 1.00
tDSP x 0.75
tDSP x 0.25
tDSP x 0.5
0
tp
X
0
URL: http://www.princeton.com.tw
BR1 BR0
Fax: [phone]
Tel: [phone]
March, 2006
PT6314