PIN No.
Symbol
I/O
Description
3
cy
I
Z1
4
c
O
Z
5
cx
I
Z0
6
INH
I
Enable
7
Vee
I
Negative Power Supply
8
Vss
I
GND
9
C
I
Select C
10
B
I
Select B
11
A
I
Select A
12
ax
I
X0
13
ay
I
X1
14
a
O
X
15
b
O
Y
16
Vdd
I
Positive Power Supply
4. TRUTH TABLE
INH
B
A
ON SWITH
0
0
0
X0
Y0
0
0
1
X1
Y1
0
1
0
X2
Y2
0
1
1
X3
Y3
1
X
X
NONE
3.5.6 function introduction to PT6311
1. DESCRIPTION
PT6311 is a Vacuum Fluorescent Display (VFD) Controller driven on a 1/8 to 1/16 duty factor housed in
52-pin plastic QFP Package. Twelve segment output lines, 8 grid output lines,
8 segment/grid output drive lines, one display memory, control circuit, key scan circuit are all incorporated
into a single chip to build a highly reliable peripheral device for a single chip micro computer. Serial data is fed
to PT6311 via a three-line serial interface.
2. FEATURES
◆
CMOS Technology
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