Datasheet

PIC16F870/871
DS30569C-page 118  2000-2013 Microchip Technology Inc.
FIGURE 14-1: PIC16FXXX VOLTAGE-FREQUENCY GRAPH
FIGURE 14-2: PIC16LFXXX VOLTAGE-FREQUENCY GRAPH
Frequency
Voltage
6.0V
5.5V
4.5V
4.0V
2.0V
20 MHz
5.0V
3.5V
3.0V
2.5V
Frequency
Voltage
6.0V
5.5V
4.5V
4.0V
2.0V
5.0V
3.5V
3.0V
2.5V
Equation 1: FMAX = (6.0 MHz/V) (VDDAPPMIN – 2.0V) + 4 MHz; VDDAPPMIN = 2.0V - 3.0V
Note 1: V
DDAPPMIN is the minimum voltage of the PIC
®
device in the application.
4 MHz 10 MHz
Note 2: FMAX has a maximum frequency of 10 MHz.
20 MHz
E
q
u
a
t
i
o
n
1
E
q
u
a
t
i
o
n
2
Equation 2: FMAX = (10.0 MHz/V) (VDDAPPMIN – 3.0V) + 10 MHz; VDDAPPMIN = 3.0V - 4.0V