COP8SA-DM National Semiconductor, COP8SA-DM Datasheet - Page 235

• Manufacturer Part Number: COP8SA-DM
• Description: MODULE DEBUGGING FOR COP8SA
• Manufacturer: National Semiconductor

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

The COP8SAC7 can be used as a key control element in an automatic washing machine
control module. The device can improve reliability, functionality, and bring specific
features to the application.
The COP8SAC7 incorporates features to meet the basic requirements of the appliance
market:
Figure 4-23 shows the block diagram of an automatic washing machine control unit.
Following is the description of main functions:
4.16.1 Reliability and Safety Features
The WATCHDOG circuitry prevents an application program from continually repeating
an infinite loop. The Software Trap (ST) reports corruption of the program counter (over
popping of the stack, for example) by initiating a non-maskable interrupt.
4.16.2 LED or LCD Display Units
Eight high-current outputs, drive-to-rail capability, programmable I/Os, powerful table
look-up capability, and two pointer registers support the installation of multiplexed
display panels. The configuration shown in Figure 4-24 supports 24 LED segments, two
digital LED blocks, and an 11-key display and scan function.
4.16.3 Zero Cross Detection
The G0 external interrupt pin with programmable edge polarity allows installation of a
simple time-base counter, using the “main power” zero crossing.
4.16.4 Other I/O Functions
Pins F2 and F3 are used for detection of water-in, drain, unbalance, and upper cover
sensor circuit. Pin F4 is used to monitor motor loading to judge the weight of the material
being washed and select proper rinse and spin procedures.
• 16-bit multi-function timer with two auto-reload registers
• Enhanced outputs for LED and LCD display drives
• High-current programmable outputs
• Schmitt trigger inputs
• WATCHDOG/clock monitor circuitry
• Software trap interrupt
• Additional hardware interrupts
• MICROWIRE/PLUS serial interface
COP8SAx7 APPLICATION IDEAS
4-43