TABLE 1
OUTPUT DURATION TIMER AS A FUNCTION OF TIMER
CONTROL INPUT VOLTAGE
(f = Frequency at AC input)
INPUT VOLTAGE
0
1/16 V
DD
2/16 V
DD
3/16V
DD
4/16 V
DD
5/16 V
DD
6/16 V
DD
7/16 V
DD
8/16 V
DD
9/16 V
DD
10/16 V
DD
11/16V
DD
12/16 V
DD
13/16 V
DD
14/16 V
DD
15/16 V
DD
f = 50Hz
18
36
54
72
2.4
3.6
4.8
6
7.2
8.4
9.6
10.8
12
14.4
16.8
18
f = 60Hz
15
30
45
60
2
3
4
5
6
7
8
9
10
12
14
15
UNIT
sec
sec
sec
sec
min
min
min
min
min
min
min
min
min
min
min
min
TABLE 2
DEAD TIME DURATION AS A FUNCTION OF THE
STATE OF DEAD TIME SELECT INPUT
(f = Frequency at AC input)
INPUT STATE
0
OPEN
1
f = 50Hz
0
1.2
2.4
f = 60Hz
0
1
2
UNIT
sec
sec
sec
The information included herein is believed to be
accurate and reliable. However, LSI Computer Systems,
Inc. assumes no responsibilities for inaccuracies, nor for
any infringements of patent rights of others which may
result from its use.
FIGURE 2. LS6505 BLOCK DIAGRAM
DIFF AMP 2 3
OUTPUT
DIFF AMP 2 2
INPUT (-)
DIFF AMP 1
OUTPUT
WINDOW
COMPARATOR
(+V)
8 V
DD
1
-
COMP
+
(-V)
6
V
SS
DIFF AMP 1
INPUT (-)
16
-
AMP
-
AMP
DIFF AMP 1
15
INPUT (+)
+
+
V
+
-
COMP
+
DIGITAL
FILTER
1 SECOND
PULSE GEN
9 LED OUTPUT
PULSE MODE
10 SELECT INPUT
OUTPUT
BUFFER
PULSE
SELECT
LOGIC
7 TRIAC OUTPUT
TIMER
CONTROL 13
INPUT
A/D
CONVERTER
OUTPUT
DURATION
TIMER
CONTROL
LOGIC
ZERO CROSS-OVER
DETECT
5 AC INPUT
OPERATION SELECT
INPUT
11
MODE SELECT INPUT
4
14
WARNING OUTPUT
DEAD TIME
SELECT INPUT 12
DEAD
TIME
TIMER
6505-110102-3
LSI [ LSI COMPUTER SYSTEMS ]
