Intel mcs-48 manual 8048H/8048H·1/8035HL/8035HL·1, J3 Xtal Z

Models: mcs-48

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8048H/8048H·1/8035HL/8035HL·1

CRYSTAL OSCILLATOR MODE

~Cf-1_-"r--_~"'-_~ZXTAL 1

L. l

cz •• T--

--T--

-

I

 

1-_-'- .....__....:j3 XTAL Z

 

C;

C1 = 5pF ± 1/2pF + STRAY <5pF

C2 = CRYSTAL + STRAY <8pF

C3 = 20pF ± 1pF + STRAY <5pF

CRYSTAL SERIES RESISTANCE SHOULD BE LESS THAN 75D AT 6 MHz LESS THAN 180D AT 3.6MHz

LC OSCILLATOR MODE

LC NOMINAL 1

45pH ZOpF 5.2 MHz

120pH ZllpF 3.2 MHz

2 XTAL1

d'"[CC L

3 XTALZ

1

F ~ '"2iiiJLc'

C~~

Z

Cpp ~ 1>010 pF PIN TO PIN CAPACITANCE

EACH C SHOULD BE APPROXIAMTELY 2OpF.INCLUDING STRAY CAPACITANCE

DRIVING FROM EXTERNAL SOURCE

+IV

470D

....+-___....;2'"1XTALI

+5V

470D

L--+--=-tXTAL2

XTAL 1 MUST BE HIGH 35-65% OF THE PERIOD AND XTAL 2 MUST BE HIGH 35-65'10OF THE

PERIOD. RISE AND FALL TIMES MUST NOT EXCEED 20nl.

6-7

AFN-01491A-07

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Intel mcs-48 manual 8048H/8048H·1/8035HL/8035HL·1, J3 Xtal Z