COP8SA-DM National Semiconductor, COP8SA-DM Datasheet - Page 216
COP8SA-DM
Manufacturer Part Number
COP8SA-DM
Description
MODULE DEBUGGING FOR COP8SA
Manufacturer
National Semiconductor
Datasheet
1.DM-COP820D.pdf
(254 pages)
Specifications of COP8SA-DM
Module/board Type
Debugger Module
For Use With/related Products
Cop 8
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
*COP8SA-DM
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Figure 4-11 shows the block diagram for an industrial timer. The user turns the
potentiometer to set the required delay time. When the delay time has elapsed, a load is
switched on or off, as selected by the input switches. The time base is derived from the
power line using a simple zero cross detection circuit, thereby allowing the use of an
inexpensive RC clock instead of a crystal oscillator. There are two indicator diodes and a
buzzer.
4-24
110V / 60Hz
240V / 50Hz
ZERO CROSS DETECTION
TIMING CONTROL
USER SWITCHES
RC OSCILLATOR
COP8SAx7 APPLICATION IDEAS
Vcc
Figure 4-11 Industrial Timer Application
Vcc
Vcc
+
Vcc
SOFTWARE
WATCHDOG
INTERRUPT
HIGH SINK
Vcc
OUTPUTS
TIMER T1
CORE
TRAP
HIGH-SIDE RELAY DRIVER
BUZZER
TWO INDICATOR LEDS
Vrelay
Vcc
Vcc
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