Datasheet

 2003-2013 Microchip Technology Inc. DS39612C-page 325
PIC18F6525/6621/8525/8621
FIGURE 27-2: PIC18LF6X2X/8X2X VOLTAGE-FREQUENCY GRAPH (INDUSTRIAL)
Frequency
Voltage
6.0V
5.5V
4.5V
4.0V
2.0V
FMAX
5.0V
3.5V
3.0V
2.5V
4 MHz
4.2V
PIC18LF6525/6621/8525/8621
For PIC18F6525/6621 and PIC18F8525/8621 in Microcontroller mode:
F
MAX = (16.36 MHz/V) (VDDAPPMIN – 2.0V) + 4 MHz, if VDDAPPMIN  4.2V;
F
MAX = 40 MHz, if VDDAPPMIN > 4.2V.
For PIC18F8525/8621 in modes other than Microcontroller mode:
FMAX = (9.55 MHz/V) (VDDAPPMIN – 2.0V) + 4 MHz, if VDDAPPMIN  4.2V;
F
MAX = 25 MHz, if VDDAPPMIN > 4.2V.
Note: V
DDAPPMIN is the minimum voltage of the PIC
®
device in the application.