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'2$4 ((' 0 1/5 BAIS CONFIGURATION External Fast Clock: RC osc. 2 34 (02*$4 % % * % * % 3 % 1 1 ( * External Slow Clock: Crystal osc. !"# ' *2$46(0233* 4 7!"# LCD PANEL ' 32$46(0234 ,-./ 0 Buzzer or Speaker Circuit Passive Bias & + Filter Circuit Please Refer AN022 for Speech Output Circuit $ ! (!( External Slow Clock: RC osc.