gc80c510 CORERIVER Semiconductor, gc80c510 Datasheet - Page 94

• Manufacturer Part Number: gc80c510
• Description: Eprom/rom 8-bit Turbo Microcontrollers
• Manufacturer: CORERIVER Semiconductor

6.2.9.3 Watchdog Timer Reset
synchronous operation and requires the clock to be running to cause an external reset.
deactivated, the device will continue to be in reset state for up to three machine cycles, and then begin
program execution from 0000h. There is no flag associated with the external reset condition. However,
since the other two reset sources have flags, the external reset can be considered as the default reset if
those two flags are cleared.
the watchdog timer at any time, causing it to restart the count. When the time-out interval is reached, an
interrupt flag is set. If the Watchdog timer reset is enabled and the Watchdog timer is not cleared, then
256 clocks from the flag being set, the Watchdog timer will generate a reset. This reset condition is
maintained by hardware for thirty clock cycles. Once the reset is removed the device will begin
execution from 0000h.
Once the device is in reset state, it will remain so as long as RESETB is “0”. Even after RESETB is
The Watchdog timer is a free running timer with programmable time-out intervals. The user can clear
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Functional Description