
PIC18F6585/8585/6680/8680
DS30491C-page 414
2004 Microchip Technology Inc.
FIGURE 27-1:
PIC18F6585/8585/6680/8680 VOLTAGE-FREQUENCY GRAPH (INDUSTRIAL)
FIGURE 27-2:
PIC18LF6585/8585/6680/8680 VOLTAGE-FREQUENCY GRAPH (INDUSTRIAL)
Frequency
Vo
lt
a
g
e
6.0V
5.5V
4.5V
4.0V
2.0V
FMAX
5.0V
3.5V
3.0V
2.5V
PIC18FXX8X
4.2V
FMAX = 40 MHz for PIC18F6X8X and PIC18F8X8X in Microcontroller mode.
FMAX = 25 MHz for PIC18F8X8X in modes other than Microcontroller mode.
Frequency
Vo
lt
a
g
e
6.0V
5.5V
4.5V
4.0V
2.0V
FMAX
5.0V
3.5V
3.0V
2.5V
PIC18LFXX8X
FMAX = (16.36 MHz/V) (VDDAPPMIN – 2.0V) + 4 MHz, if VDDAPPMIN
≤ 4.2V;
Note: VDDAPPMIN is the minimum voltage of the PICmicro device in the application.
4 MHz
4.2V
FMAX = 40 MHz, if VDDAPPMIN > 4.2V.
For PIC18F6X8X and PIC18F8X8X in Microcontroller mode:
FMAX = (9.55 MHz/V) (VDDAPPMIN – 2.0V) + 4 MHz, if VDDAPPMIN
≤ 4.2V;
FMAX = 25 MHz, if VDDAPPMIN > 4.2V.
For PIC18F8X8X in modes other than Microcontroller mode: