Connection Of Oscillator And External Clock; Fig. 4.6 Connection Of Crystal Or Ceramic Oscillator; Fig. 4.7 Connection Of External Clock - Fujitsu MB90420/5 (A) Series Hardware Manual

4.6 Connection of Oscillator and External Clock

The MB90420/5 (A) series contains a system clock generator and the clock is generated by connecting an
external oscillator.
An external clock can also be input.
n Connection of oscillator and external clock
• Connection example for crystal or ceramic oscillator
Connect a crystal or ceramic oscillator as shown in Figure 4.6.
• Connection of external clock
Connect the external clock to X0 (X0A) pin and leave X1 (X1A) pin open as shown in Figure 4.7.

Fig. 4.6 Connection of Crystal or Ceramic Oscillator

∼

Fig. 4.7 Connection of External Clock

CLOCK
X0 (X0A)
MB90420/5 (A)
X1 (X1A)
X0 (X0A)
MB90420/5 (A)
Open
X1 (X1A)
4-13