User's Manual

INTERNAL SPECIFICATIONS
147
XTAL 2
XTAL 1
TIMER, S-I/O &
INTERRUPT
CPU CONTROL
CLOCK
Bit
Set
SMOD HPD RPD
—
GF1 GF0 PD IDL
76543210
*•
PCON, 87H
CONTROL
Figure 4-53 ldle mode equivalent circuit