Intel 8XC196Lx Bedienungsanleitung PDF herunterladen (Seite 95)

10-1

CHAPTER 10

SPECIAL OPERATING MODES

The 8XC196Lx’s idle and powerdown modes are the same as those of the 8XC196Kx. However,

the clock circuitry has changed, and the on-circuit emulation (ONCE) special-purpose mode op-

eration has changed slightly because of the new reset state pin levels that have been implemented.

10.1 INTERNAL TIMING

The 87C196LA and LB clock circuitry (Figure 10-1) implements a phase-locked loop and clock

multiplier circuitry, which can substantially increase the CPU clock rate while using a lower-fre-

quency input clock.

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Intel 8XC196Lx Bedienungsanleitung Seite 95