45111 datasheet(177/184 Pages) ETC2

177 / 184 page

15 Appendix E: SX Data Sheet

SX-Key/Blitz Development System Manual 2.0

• Parallax, Inc. • Page 177

Table 34 – External Component Selection for Crystals (Vdd = 5V)

OSC Setting

Crystal Frequency

OSCXT1

4 MHz

15 pF

22 pF

1 M

Ω

OSCXT2

8 MHz

56 pF

33 pF

1 M

Ω

OSCXT2

20 MHz

33 pF

22 pF

1 M

Ω

OSCXT2

32 MHz

15 pF

22 pF

1 M

Ω

OSCHS1

50 MHz

15 pF

1 M

Ω

Figure 38 - SX with External Ceramic Resonator

Table 35 - Component Selection for Murata Ceramic Resonators (Vdd = 5.0 V)

OSC Setting Frequency Resonator Part Number

OSCXT2

4 MHz

CSA4.00MG

30 pF

1 M

Ω

OSCXT2

4 MHz

CST4.00MGW

30 pF *

1 M

Ω

OSCXT2

4 MHz

CSTCC4.00G0H6

47 pF *

1 M

Ω

OSCXT2

8 MHz

CSA8.00MTZ

30 pF

1 M

Ω

OSCXT2

8 MHz

CST8.00MTW

30 pF *

1 M

Ω

OSCXT2

8 MHz

CSTCC8.00MG0H6

47 pF *

1 M

Ω

OSCXT2

20 MHz

CSA20.00MXZ040

5 pF

1 M

Ω

OSCXT2

20 MHz

CST20.00MXW0H1

5 pF *

1 M

Ω

OSCXT2

20 MHz

CSACV20.00MXJ040

5 pF

22 k

Ω

OSCXT2

20 MHz

CSTCV20.00MXJ0H1

5 pF *

22 k

Ω

OSCHS1

33 MHz

CSA33.00MXJ040

5 pF

1 M

Ω

OSCHS1

33 MHz

CST33.00MXW040

5 pF *

1 M

Ω

OSCHS1

33 MHz

CSACV33.00MXJ040

5 pF

1 M

Ω

OSCHS1

33 MHz

CSTCV33.00MXJ040

5 pF *

1 M

Ω

OSCHS2

50 MHz

CSA50.00MXZ040

15 pF

10 k

Ω

OSCHS2

50 MHz

CST50.00MXW0H3

15 pF *

10 k

Ω

OSCHS2

50 MHz

CSACV50.00MXJ040

15 pF

10 k

Ω

OSCHS2

50 MHz

CSTCV50.00MXJ0H3

15 pF *

10 k

Ω

* Capacitors built in to resonator

Note:

Rs is zero for all configurations.

Xtal

OSC1

OSC2

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