Datasheet

 1998-2013 Microchip Technology Inc. DS30289C-page 269

PIC17C7XX

FIGURE 21-4: TYPICAL RC OSCILLATOR FREQUENCY vs. VDD

TABLE 21-2: RC OSCILLATOR FREQUENCIES

2.0

1.8

1.6

1.4

1.2

1.0

0.8

0.6

0.4

4.0 4.5 5.0 5.5 6.0 6.5

FOSC (MHz)

VDD (Volts)

R = 10k

CEXT = 300 pF, T = +25C

R = 160k

R = 3.3k

R = 5.1k

0.2

0.0

CEXT REXT

Average

OSC @ 5V, +25C

22 pF 10k 3.33 MHz  12%

100k 353 kHz  13%

100 pF 3.3k 3.54 MHz  10%

5.1k 2.43 MHz  14%

10k 1.30 MHz  17%

100k 129 kHz  10%

300 pF 3.3k 1.54 MHz  14%

5.1k 980 kHz  12%

10k 564 kHz  16%

160k 35 kHz  18%