Microchip Technology ARD00385 Data Sheet
PIC18F87K90 FAMILY
DS39957D-page 506
2009-2011 Microchip Technology Inc.
FIGURE 31-1:
VOLTAGE-FREQUENCY GRAPH, REGULATOR ENABLED
(INDUSTRIAL/EXTENDED)
(INDUSTRIAL/EXTENDED)
(1)
FIGURE 31-2:
VOLTAGE-FREQUENCY GRAPH, REGULATOR DISABLED
(INDUSTRIAL/EXTENDED)
(INDUSTRIAL/EXTENDED)
(1,2)
Frequency
Vo
lt
a
g
e
(
V
DD
)
6V
1.8V
64 MHz
(1)
5V
4V
3V
5.5V
3V
0
4 MHz
PIC18F87K90 Family
(Extended)
Note 1:
F
MAX
= 64 MHz in all other modes. For V
DD
values, 1.8V to 3V, F
MAX
= (V
DD
– 1.72)/0.02 MHz.
48 MHz
PIC18F87K90 Family
(Industrial Only)
Frequency
V
o
lt
age (V
DD
)
4V
1.8V
64 MHz
3.75V
3.25V
2.5V
3.6V
4 MHz
3V
Note 1:
When the on-chip voltage regulator is disabled, V
DD
must be maintained so that V
DD
3.6V.
2:
For V
DD
values, 1.8V to 3V, F
MAX
= (V
DD
– 1.72)/0.02 MHz.
PIC18F87K90 Family
(Extended)
48 MHz
PIC18F87K90 Family
(Industrial Only)