Datasheet

 1996 Microchip Technology Inc. DS30412C-page 195
PIC17C4X
Applicable Devices 42 R42 42A 43 R43 44
FIGURE 20-4: TYPICAL RC OSCILLATOR FREQUENCY vs. V
DD
TABLE 20-2: RC OSCILLATOR FREQUENCIES
Cext Rext
Average
Fosc @ 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%
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