XTAL1 connection for applied external clock

Q.  Where should the pin 19 (XTAL1), acting as an input of inverting amplifier as well as part of an oscillator circuit, be connected under the application of external clock?
- Published on 06 Nov 15

a. to XTAL2
b. to Vcc
c. to GND
d. to ALE

ANSWER: to GND

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