
PIC18F2458/2553/4458/4553
DS39887C-page 34
2009 Microchip Technology Inc.
FIGURE 4-1:
PIC18F2458/2553/4458/4553 VOLTAGE-FREQUENCY GRAPH (INDUSTRIAL)
FIGURE 4-2:
PIC18LF2458/2553/4458/4553 VOLTAGE-FREQUENCY GRAPH (INDUSTRIAL)
Frequency
Vo
lt
a
g
e
6.0V
5.5V
4.5V
4.0V
2.0V
48 MHz
5.0V
3.5V
3.0V
2.5V
PIC18F2458/2553/4458/4553
4.2V
Frequency
Vo
lt
ag
e
6.0V
5.5V
4.5V
4.0V
2.0V
40 MHz
5.0V
3.5V
3.0V
2.5V
For 2.0V
≤ VDD < 4.2V: FMAX = (16.36 MHz/V) (VDDAPPMIN – 2.0V) + 4 MHz
Note: VDDAPPMIN is the minimum voltage of the PIC device in the application.
4 MHz
4.2V
48 MHz
PIC18LF2458/2553/4458/4553
For 4.2V
≤ VDD: FMAX = 48 MHz