AD6315
1/4- to 1/12 Duty VFD Controller/Driver
Timing Characteristics
(T
A
= -20 to +70°C, V
DD
= 4.5 to 5.5V)
Parameter
Clock pulse width
Strobe pulse width
Data setup time
Data hold time
Clock-strobe time
Wait time
Symbol
PW
CLK
PW
STB
T
setup
t
HOLD
t
CLK-STB
t
WAIT
Conditions
Min.
400
1
100
100
1
1
Typ.
Max.
Unit
ns
µS
ns
ns
µs
µs
CLK
→
STB
CLK
→
STB
(Note)
→
→
Note : Refer to the
Serial communication format.
Function Descriptions
(1) Display RAM Address and Display Mode
The display RAM stores the data transmitted to the AD6315 through the serial communication. The
addresses are allocated in 8-bit units.
Seg
1
00H
L
03H
U
06H
L
09H
L
0CH
L
0FH
L
12H
L
15H
L
18H
L
1BH
L
1EH
L
21H
L
Seg
4
Seg
8
00H
U
03H
U
06H
U
09H
U
0CH
U
0FH
U
12H
U
15H
U
18H
U
1BH
U
1EH
U
21H
U
Seg
12
01H
L
04H
L
07H
L
0AH
L
0DH
L
10H
L
13H
L
16H
L
19H
L
1CH
L
1FH
L
22H
L
Seg
16
01H
U
04H
U
07H
U
0AH
U
0DH
U
10H
U
13H
U
16H
U
19H
U
1CH
U
1FH
U
22H
U
Seg
20
02H
L
05H
L
08H
L
0BH
L
0EH
L
11H
L
14H
L
17H
L
1AH
L
1DH
L
20H
L
23H
L
Seg
24
02H
U
05H
U
08H
U
0BH
U
0EH
U
11H
U
14H
U
17H
U
1AH
U
1DH
U
20H
U
23H
U
→
→
DIG
1
DIG
2
DIG
3
DIG
4
DIG
5
DIG
6
DIG
7
DIG
8
DIG
9
DIG
10
DIG
11
DIG
12
b0
XXH
L
Lower 4 bits
b3 b4
XXH
U
Higher 4 bits
b7
Anachip Corp.
www.anachip.com.tw
6/16
Rev. A5 Dec 29, 2003
ANACHIP [ ANACHIP CORP ]
