Intel E3815 FH8065301567411 Data Sheet

Intel

®

 Atom™ Processor E3800 Product Family

124

Datasheet

2.

Crystal tolerance impacts RTC time. A 10 ppm crystal is recommended for 1.7 s tolerance per day, RTC 

circuit itself contributes addition 10 ppm for a total of 20 ppm in this example.

1.

These are the specifications needed to select a crystal oscillator for the Integrated Clock circuit. Crystal 

must be AT cut, fundamental, parallel resonance.

Platform reference voltages are specified at DC only. V

REF

 

measurements should be 

made with respect to the supply voltages specified in 

See the following DC Specifications in this section:

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F

ICLK

Frequency

-

25

-

MHz

1

T

PPM

Crystal frequency tolerance & 
stability

-

-

+/-100

ppm

1

P

DRIVE

Crystal drive load

-

-

100

uW

1

R

ESR

ESR

-

-

100

Ohm

1

C

LOAD

Crystal load capacitance

18

pF

C

SHUNT

Crystal shunt capacitance

-

-

6

pF

1

C

IN/OUT

Capacitance of oscillator pins 

pF

1