PIC16LC8X View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC16LC8X

8-Bit CMOS EEPROM Microcontrollers

Microchip Technology 

PIC16C8X

TABLE 8-3:

PIC16C84 CAPACITOR

SELECTION FOR CRYSTAL

OSCILLATOR

Mode

Freq

OSC1/C1 OSC2/C2

LP

32 kHz 68 - 100 pF 68 - 100 pF

200 kHz 15 - 33 pF 15 - 33 pF

XT

100 kHz 100 - 150 pF 100 - 150 pF

2 MHz

15 - 33 pF 15 - 33 pF

4 MHz

15 - 33 pF 15 - 33 pF

HS

4 MHz

15 - 33 pF 15 - 33 pF

10 MHz 15 - 33 pF 15 - 33 pF

Note :

Higher capacitance increases the stability of

oscillator but also increases the start-up time.

These values are for design guidance only. Rs may

be required in HS mode as well as XT mode to

avoid overdriving crystals with low drive level spec-

ification. Since each crystal has its own

characteristics, the user should consult the crystal

manufacturer for appropriate values of external

components.

For VDD > 4.5V, C1 = C2 ≈ 30 pF is recommended.

Crystals Tested:

32.768 kHz

100 kHz

200 kHz

1.0 MHz

2.0 MHz

4.0 MHz

10.0 MHz

Epson C-001R32.768K-A ± 20 PPM

Epson C-2 100.00 KC-P ± 20 PPM

STD XTL 200.000 KHz ± 20 PPM

ECS ECS-10-13-2

± 50 PPM

ECS ECS-20-S-2

± 50 PPM

ECS ECS-40-S-4

± 50 PPM

ECS ECS-100-S-4

± 50 PPM

TABLE 8-4:

PIC16C83/R83/84A/R84

CAPACITOR SELECTION

FOR CRYSTAL OSCILLATOR

Mode

Freq

OSC1/C1 OSC2/C2

LP

32 kHz 68 - 100 pF 68 - 100 pF

200 kHz 15 - 33 pF 15 - 33 pF

XT

100 kHz 100 - 150 pF 100 - 150 pF

2 MHz

15 - 33 pF 15 - 33 pF

4 MHz

15 - 33 pF 15 - 33 pF

HS

4 MHz

15 - 33 pF 15 - 33 pF

10 MHz 15 - 33 pF 15 - 33 pF

Note :

Higher capacitance increases the stability of

oscillator but also increases the start-up time.

These values are for design guidance only. Rs may

be required in HS mode as well as XT mode to

avoid overdriving crystals with low drive level spec-

ification. Since each crystal has its own characteris-

tics, the user should consult the crystal

manufacturer for appropriate values of external

components.

For VDD > 4.5V, C1 = C2 ≈ 30 pF is recommended.

Crystals Tested:

32.768 kHz

100 kHz

200 kHz

1.0 MHz

2.0 MHz

4.0 MHz

10.0 MHz

Epson C-001R32.768K-A ± 20 PPM

Epson C-2 100.00 KC-P ± 20 PPM

STD XTL 200.000 KHz ± 20 PPM

ECS ECS-10-13-2

± 50 PPM

ECS ECS-20-S-2

± 50 PPM

ECS ECS-40-S-4

± 50 PPM

ECS ECS-100-S-4

± 50 PPM

DS30081F-page 40

© 1995 Microchip Technology Inc.

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