PIC18F2220/2320/4220/4320
REGISTER 2-1:
OSCTUNE: OSCILLATOR TUNING REGISTER
U-0
—
U-0
—
R/W-0
TUN5
R/W-0
TUN4
R/W-0
TUN3
R/W-0
TUN2
R/W-0
TUN1
R/W-0
TUN0
bit 7
bit 0
bit 7-6
bit 5-0
Unimplemented: Read as ‘0’
TUN<5:0>: Frequency Tuning bits
011111= Maximum frequency (+12.5%, approximately)
•
•
•
•
000001
000000= Center frequency. Oscillator module is running at the calibrated frequency.
111111
•
•
•
•
100000= Minimum frequency (-12.5%, approximately)
Legend:
R = Readable bit
-n = Value at POR
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared x = Bit is unknown
2003 Microchip Technology Inc.
DS39599C-page 23