PIC16LC71 datasheet(108/176 Pages) MICROCHIP

108 / 176 page

PIC16C71X

DS30272A-page 108

Applicable Devices

710 71 711 715

FIGURE 12-22: TYPICAL XTAL STARTUP

TIME vs. VDD (LP MODE, 25

°C)

FIGURE 12-23: TYPICAL XTAL STARTUP

TIME vs. VDD (HS MODE,

°C)

3.5

3.0

2.5

2.0

1.5

1.0

0.5

0.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

VDD(Volts)

32 kHz, 33 pF/33 pF

200 kHz, 15 pF/15 pF

4.0

4.5

5.0

5.5

6.0

VDD(Volts)

20 MHz, 33 pF/33 pF

8 MHz, 33 pF/33 pF

8 MHz, 15 pF/15 pF

20 MHz, 15 pF/15 pF

FIGURE 12-24: TYPICAL XTAL STARTUP

TIME vs. VDD (XT MODE, 25

°C)

TABLE 12-2:

CAPACITOR SELECTION

FOR CRYSTAL

OSCILLATORS

Osc Type

Crystal

Freq

Cap. Range

32 kHz

33 pF

200 kHz

15 pF

200 kHz

47-68 pF

1 MHz

15 pF

4 MHz

15 pF

4 MHz

15 pF

8 MHz

15-33 pF

20 MHz

15-33 pF

Crystals

Used

32 kHz

Epson C-001R32.768K-A

± 20 PPM

200 kHz

STD XTL 200.000KHz

± 20 PPM

1 MHz

ECS ECS-10-13-1

± 50 PPM

4 MHz

ECS ECS-40-20-1

± 50 PPM

8 MHz

EPSON CA-301 8.000M-C

± 30 PPM

20 MHz

EPSON CA-301 20.000M-C

± 30 PPM

3.0

3.5

2.5

4.0

5.0

5.5

6.0

4.5

VDD(Volts)

200 kHz, 68 pF/68 pF

200 kHz, 47 pF/47 pF

1 MHz, 15 pF/15 pF

4 MHz, 15 pF/15 pF

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