Datasheet

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
Voltage
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
Voltage
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: V
DDAPPMIN 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