Rev 2.2, August 1, 2010

Page 5 of 10

SL16020DC

Table 5. SSEL1 and SSEL0 versus Spread % Selection at SSCLK

SSEL1 (Pin 3)

SSEL0 (Pin 7)

Spread Percent (%)

SSCLK (Pin 5)

Low (VSS)

Low (VSS)

Spread Off (No Spread)

Low (VSS)

Middle (VDD/2)

-0.50%

Low (VSS)

High (VDD)

-0.375%

Middle (VDD/2)

Low (VSS)

-0.25%

Middle (VDD/2)

Middle (VDD/2)

-0.75%

Middle (VDD/2)

High (VDD)

-1.00%

High (VDD)

Low (VSS)

-1.50%

High (VDD)

Middle (VDD/2)

Spread Off (No Spread)-Test

High (VDD)

High (VDD)

Spread Off (No Spread)-Test

Table 6. Recommended Crystal Specifications

Description

Min

Typ

Max

Unit

Nominal Frequency (Fundamental Crystal)

-

27.000

-

MHz

Crystal Accuracy

-

+/-10

-

ppm

Load Capacitance

6

12

18

pF

Shunt Capacitance

-

-

7.0

pF

Equivalent Series Resistance (ESR)

-

-

30

Ω

Drive Level

-

-

1.0

mW