W79E825A Datasheet, PDF (11/127 Pages) Winbond – 8-BIT MICROCONTROLLER

W79E825A/824A/823B/822B Data Sheet
6.7.6 Stack Pointer
The W79E825 series have an 8-bit Stack Pointer which points to the top of the Stack. This stack
resides in the Scratch Pad RAM in the W79E825 series. Hence the size of the stack is limited by the
size of this RAM.
6.8 Power Management
Power Management like the standard 8052, the W79E825 series also have the IDLE and POWER
DOWN modes of operation. In the IDLE mode, the clock to the CPU is stopped while the timers, serial
ports and interrupt lock continue to operate. In the POWER DOWN mode, all clocks are stopped and
the chip operation is completely stopped. This is the lowest power consumption state.
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Publication Release Date: February 21, 2008
Revision A9