PIC16C7X
DS30390B-page 124
1995 Microchip Technology Inc.
TABLE 14-1:
CERAMIC RESONATORS
PIC16C71
TABLE 14-2:
CAPACITOR SELECTION
FOR CRYSTAL OSCILLATOR
FOR PIC16C71
Ranges Tested:
Mode
XT
Freq
OSC1
47 - 100 pF
15 - 68 pF
15 - 68 pF
15 - 68 pF
10 - 47 pF
OSC2
455 kHz
2.0 MHz
4.0 MHz
8.0 MHz
16.0 MHz
Recommended values of C1 and C2 are identical to
the ranges tested table.
Higher capacitance increases the stability of oscilla-
tor but also increases the start-up time. These val-
ues are for design guidance only. Since each
resonator has its own characteristics, the user
should consult the resonator manufacturer for
appropriate values of external components.
Resonators Used:
455 kHz
Panasonic EFO-A455K04B
2.0 MHz
Murata Erie CSA2.00MG
4.0 MHz
Murata Erie CSA4.00MG
8.0 MHz
Murata Erie CSA8.00MT
16.0 MHz
Murata Erie CSA16.00MX
All resonators used did not have built-in capacitors.
47 - 100 pF
15 - 68 pF
15 - 68 pF
15 - 68 pF
10 - 47 pF
HS
Note:
±
±
±
±
±
0.3%
0.5%
0.5%
0.5%
0.5%
Mode
LP
Freq
OSC1
33 - 68 pF
15 - 47 pF
47 - 100 pF
20 - 68 pF
15 - 68 pF
15 - 47 pF
15 - 33 pF
15 - 47 pF
15 - 47 pF
OSC2
33 - 68 pF
15 - 47 pF
47 - 100 pF
20 - 68 pF
15 - 68 pF
15 - 47 pF
15 - 33 pF
15 - 47 pF
15 - 47 pF
32 kHz
200 kHz
100 kHz
500 kHz
1 MHz
2 MHz
4 MHz
8 MHz
20 MHz
XT
HS
Note:
Higher capacitance increases the stability of oscil-
lator 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 specifica-
tion. Since each crystal has its own characteristics,
the user should consult the crystal manufacturer for
appropriate values of external components.
TABLE 14-3:
CERAMIC RESONATORS
PIC16C70/71A/72/73/73A/74/
74A
TABLE 14-4:
CAPACITOR SELECTION
FOR CRYSTAL OSCILLATOR
FOR PIC16C70/71A/72/73/73A/
74/74A
Ranges Tested:
Mode
XT
Freq
OSC1
OSC2
68 - 100 pF
15 - 68 pF
15 - 68 pF
10 - 68 pF
10 - 22 pF
455 kHz
2.0 MHz
4.0 MHz
8.0 MHz
16.0 MHz
Recommended values of C1 and C2 are identical to
the ranges tested table.
Higher capacitance increases the stability of oscil-
lator but also increases the start-up time. These
values are for design guidance only. Since each
resonator has its own characteristics, the user
should consult the resonator manufacturer for
appropriate values of external components.
Resonators Used:
455 kHz
Panasonic EFO-A455K04B
2.0 MHz
Murata Erie CSA2.00MG
4.0 MHz
Murata Erie CSA4.00MG
8.0 MHz
Murata Erie CSA8.00MT
16.0 MHz Murata Erie CSA16.00MX
All resonators used did not have built-in capacitors.
68 - 100 pF
15 - 68 pF
15 - 68 pF
10 - 68 pF
10 - 22 pF
HS
Note:
±
±
±
±
±
0.3%
0.5%
0.5%
0.5%
0.5%
Mode
LP
Freq
OSC1
15 - 47 pF
15 - 33 pF
47 - 100 pF
20 - 68 pF
15 - 68 pF
15 - 47 pF
15 - 33 pF
15 - 47 pF
15 - 47 pF
OSC2
15 - 47 pF
15 - 33 pF
47 - 100 pF
20 - 68 pF
15 - 68 pF
15 - 47 pF
15 - 33 pF
15 - 47 pF
15 - 47 pF
32 kHz
200 kHz
100 kHz
500 kHz
1 MHz
2 MHz
4 MHz
8 MHz
20 MHz
Higher capacitance increases the stability of oscil-
lator 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 specifica-
tion. Since each crystal has its own characteristics,
the user should consult the crystal manufacturer for
appropriate values of external components.
For V
DD
> 4.5V, C1 = C2
mended.
(1)
XT
HS
Note:
Note 1:
≈
30 pF is recom-