CONTROL433. CONTROL3.1 Oscillators: XTAL1XTAL2An oscillator is formed by connecting a crystal or ceramic resonator between the XTAL1 andXTAL2 pins of the MSM80C154S/MSM83C154S devices.If an external clock is applied to XTAL1, the input should be at 50% duty and C-MOS level.IDLE MODEPD & HPD MODECPU CONTROL CLOCKTIMER, S I/O & INTERRUPT1MΩXTAL1XTAL2XTALCC**MSM80C154S/MSM83C154S* The capacity of the compensating capacitor depends on the crystal resonator.* The XTAL1·2 frequency depends on VCC.Figure 3-1 Crystal resonator connection diagram
