PIC18F87K22 Datasheet, PDF (42/548 Pages) Microchip Technology – 64/80-Pin, High-Performance, 1-Mbit Enhanced Flash Microcontrollers with 12-Bit A/D and nanoWatt XLP Technology

PIC18F87K22 FAMILY
TABLE 3-1: HS, EC, XT, LP AND RC MODES: RANGES AND SETTINGS
Mode
Frequency Range
FOSC<3:0> Setting
EC1 (low power)
(EC1 & EC1IO)
EC2 (medium power)
(EC2 & EC2IO)
EC3 (high power)
(EC3 & EC3IO)
HS1 (medium power)
HS2 (high power)
XT
LP
RC (External)
DC-160 kHz
160 kHz-16 MHz
16 MHz-64 MHz
4 MHz-16 MHz
16 MHz-25 MHz
100 kHz-4 MHz
31.25 kHz
0 - 4 MHz
1101
1100
1011
1010
0101
0100
0011
0010
0001
0000
001x
INTIO
32 KHz-16 MHz
100x
(and OSCCON, OSCCON2)
FIGURE 3-1:
PIC18F87K22 FAMILY CLOCK DIAGRAM
SOSCO
SOSCI
OSC2
OSC1
HF INTOSC
16 MHz to
31 kHz
16 MHz
8 MHz
4 MHz
2 MHz
1 MHz
500 kHz
250 kHz
31 kHz
MF INTOSC
500 kHz to
31 kHz
500 kHz
250 kHz
31 kHz
LF INTOSC
31 kHz
31 kHz
MFIOSEL
4x PLL
FOSC<3:0>
PLLEN
and PLLCFG
16 MHz 111
8 MHz
110
4 MHz
101
2 MHz
100
1 MHz ₀₁₁
500 kHz
250 kHz ⁰¹⁰
001
31 kHz
000
Peripherals
CPU
IDLEN
Clock Control
SCS<1:0>
FOSC<3:0>
IRCF<2:0>
INTSRC
DS39960B-page 42
Preliminary
 2010 Microchip Technology Inc.