W77E532 Datasheet, PDF (45/86 Pages) Winbond – 8 BIT MICROCONTROLLER

W77E532/W77E532A
The WDCON SFR bits are set/cleared in reset condition depending on the source of the reset.
External reset
Watchdog reset
Power on reset
WDCON 0x0x0xx0b
0x0x01x0b
01000000b
The POR bit WDCON.6 is set only by the power on reset. The PFI bit WDCON.4 is set when the power
fail condition occurs. However, a power-on reset will clear this bit. The WTRF bit WDCON.2 is set
when the Watchdog timer causes a reset. A power on reset will also clear this bit. The EWT bit
WDCON.1 is cleared by power on resets. This disables the Watchdog timer resets. A watchdog or
external reset does not affect the EWT bit.
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Publication Release Date: June 30, 2009
Revision A10