MC14536B
http://onsemi.com
11
Figure 12. Time Interval Configuration Using On−Chip RC Oscillator and
Reset Input to Initiate Time Interval (Divide−by−2 Configured)
NOTE: This circuit is designed to use the on−chip oscillation function. The oscillator frequency is determined by the external R and C
components. When power is first applied to the device, DECODE OUT initializes to a high state. Because this output is tied directly
to the OSC INH input, the oscillator is disabled. This puts the device in a low−current standby condition. The rising edge of the
RESET pulse will cause the output to go low. This in turn causes OSC INH to go low. However, while RESET is high, the oscillator
is still disabled (i.e.: standby condition). After RESET goes low, the output remains low for 2
n
/2 of the oscillator’s period. After the
part times out, the output again goes high.
PULSE
GEN.
8-BYPASS
A
B
C
D
RESET
OSC INH
MONO-IN
SET
CLOCK INH
IN
1
V
SS
DECODE OUT
OUT 2
OUT 1
8
16
+V
6
9
10
11
12
2
14
15
1
7
313
5
4
V
DD
R
S
R
TC
C
OUT 2
OUT 1
RESET
POWERUP
R
s
F
R
C
DECODE OUT
t
w
≥ R
tc
= Hz
= Ohms
= FARADS
f
osc
^
1
2.3R
tc
C
