PIC18F23K20 MICROCHIP [Microchip Technology], PIC18F23K20 Datasheet - Page 301
![no-image](/images/no-image-200.jpg)
PIC18F23K20
Manufacturer Part Number
PIC18F23K20
Description
28/40/44-Pin Flash Microcontrollers with nanoWatt XLP Technology
Manufacturer
MICROCHIP [Microchip Technology]
Datasheet
1.PIC18F23K20.pdf
(456 pages)
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Part Number:
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Manufacturer:
Microchip Technology
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REGISTER 23-1:
2010 Microchip Technology Inc.
bit 7
Legend:
R = Readable bit
-n = Value when device is unprogrammed
bit 7
bit 6
bit 5-4
bit 3-0
R/P-0
IESO
IESO: Internal/External Oscillator Switchover bit
1 = Oscillator Switchover mode enabled
0 = Oscillator Switchover mode disabled
FCMEN: Fail-Safe Clock Monitor Enable bit
1 = Fail-Safe Clock Monitor enabled
0 = Fail-Safe Clock Monitor disabled
Unimplemented: Read as ‘0’
FOSC<3:0>: Oscillator Selection bits
11xx = External RC oscillator, CLKOUT function on RA6
101x = External RC oscillator, CLKOUT function on RA6
1001 = Internal oscillator block, CLKOUT function on RA6, port function on RA7
1000 = Internal oscillator block, port function on RA6 and RA7
0111 = External RC oscillator, port function on RA6
0110 = HS oscillator, PLL enabled (Clock Frequency = 4 x FOSC1)
0101 = EC oscillator, port function on RA6
0100 = EC oscillator, CLKOUT function on RA6
0011 = External RC oscillator, CLKOUT function on RA6
0010 = HS oscillator
0001 = XT oscillator
0000 = LP oscillator
FCMEN
R/P-0
CONFIG1H: CONFIGURATION REGISTER 1 HIGH
P = Programmable bit
U-0
—
U-0
—
U = Unimplemented bit, read as ‘0’
x = Bit is unknown
FOSC3
R/P-0
PIC18F2XK20/4XK20
FOSC2
R/P-1
FOSC1
R/P-1
DS41303G-page 301
FOSC0
R/P-1
bit 0
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