I am referring schematic for AT89C2051 IC and 4 AT89C2051 IC's are used for motor application as shown.

(Pls note there are total 3 IC's where XTAL2 pin of first IC is assigned to XTAL1 of other 3)


Now, I want to replace crystal with crystal oscillator, IC datasheet suggests following configuration as per datasheet's page no. 4


So, I am thinking to add below configuration in design.


Is it correct approach OR I need to do some changes, if so please someone help.

Thank you in advance.

  • 1
    \$\begingroup\$ That is the correct approach \$\endgroup\$ – EM Fields Nov 9 '16 at 7:25
  • \$\begingroup\$ Or should I need to assign CLK pin of oscillator to XTAL1 input of first AT89C2051 and then XTAL2 pin of first IC to remaining 2 IC's XTAL2 pin ( as per crystal connection shown in first image ) ... \$\endgroup\$ – Electroholic Nov 9 '16 at 8:16
  • \$\begingroup\$ If you think I've missed something, then try it your way and find out for yourself. \$\endgroup\$ – EM Fields Nov 9 '16 at 10:25
  • \$\begingroup\$ @ EM Fields, Thanks for your comment .... Dear, I need right way to add crystal and design board... I am confused so I am asking :) \$\endgroup\$ – Electroholic Nov 9 '16 at 11:33

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