PIC18F-LF1XK50 Datasheet, PDF (26/420 Pages) Microchip Technology – 20-Pin USB Flash Microcontrollers

PIC18F/LF1XK50
TABLE 2-4:
Clock Mode
LOW SPEED USB CLOCK SETTINGS
Clock
Frequency
USBDIV
4x PLL
Enabled
Yes
12 MHz
1
No
EC High/HS
Yes
6 MHz
0
No
CPUDIV<1:0>
00
01
10
11
00
01
10
11
00
01
10
11
00
01
10
11
System Clock
Frequency (MHz)
48
24
16
12
12
6
4
3
24
12
8
6
6
3
2
1.5
Note:
The system clock frequency in Table 2-4
only applies if the OSCCON register bits
SCS<1:0> = 00. By changing these bits,
the system clock can operate down to
31 kHz.
TABLE 2-5: FULL-SPEED USB CLOCK SETTINGS
Clock Mode
Clock Frequency 4x PLL Enabled
EC High
48 MHz
No
EC High/HS
12 MHz
Yes
CPUDIV<1:0>
00
01
10
11
00
01
10
11
System Clock Frequency
(MHz)
48
24
16
12
48
24
16
12
Note:
The system clock frequency in the above
table only applies if the OSCCON register
bits SCS<1:0> = 00. By changing these
bits, the system clock can operate down to
31 kHz.
DS41350E-page 26
Preliminary
 2010 Microchip Technology Inc.