Datasheet

 2010 Microchip Technology Inc. Preliminary DS39964B-page 41
PIC18F47J53 FAMILY
TABLE 3-5: OSCILLATOR CONFIGURATION OPTIONS FOR USB OPERATION
Input Oscillator
Frequency
PLL Division
(PLLDIV<2:0>)
Clock Mode
(FOSC<2:0>)
MCU Clock Division
(CPDIV<1:0>)
Microcontroller
Clock Frequency
48 MHz N/A EC
None (11)
48 MHz
2 (10)24MHz
3 (01)16MHz
6 (00)8MHz
48 MHz 12 (000)ECPLL
None (11)48MHz
2 (10)24MHz
3 (01)16MHz
6 (00)8MHz
40 MHz 10 (001)ECPLL
None (11)48MHz
2 (10)24MHz
3 (01)16MHz
6 (00)8MHz
24 MHz 6 (010)ECPLL
None (11)48MHz
2 (10)24MHz
3 (01)16MHz
6 (00)8MHz
24 MHz N/A EC
(1)
None (11)24MHz
2 (10)12MHz
3 (01)8MHz
6 (00)4MHz
20 MHz 5 (011)ECPLL
None (11)48MHz
2 (10)24MHz
3 (01)16MHz
6 (00)8MHz
16 MHz 4 (100) HSPLL, ECPLL
None (11)48MHz
2 (10)24MHz
3 (01)16MHz
6 (00)8MHz
12 MHz 3 (101) HSPLL, ECPLL
None (11)48MHz
2 (10)24MHz
3 (01)16MHz
6 (00)8MHz
8MHz 2 (110)
HSPLL, ECPLL,
INTOSCPLL/
INTOSCPLLO
None (11)48MHz
2 (10)24MHz
3 (01)16MHz
6 (00)8MHz
4MHz 1 (
111) HSPLL, ECPLL
None (11)48MHz
2 (10)24MHz
3 (01)16MHz
6 (00)8MHz
Note 1: The 24 MHz EC mode (without PLL) is only compatible with low-speed USB. Full-speed USB requires a 48 MHz system
clock.