PIC32MX440F256H-80I Datasheet, PDF (62/646 Pages) Microchip Technology – 64/100-Pin General Purpose and USB 32-Bit Flash Microcontrollers

PIC32MX3XX/4XX
REGISTER 4-2: OSCTUN: FRC TUNING REGISTER
r-x
r-x
r-x
r-x
r-x
r-x
r-x
r-x
—
—
—
—
—
—
—
—
bit 31
bit 24
r-x
r-x
r-x
r-x
r-x
r-x
r-x
r-x
—
—
—
—
—
—
—
—
bit 23
bit 16
r-x
r-x
r-x
r-x
r-x
r-x
r-x
r-x
—
—
—
—
—
—
—
—
bit 15
bit 8
r-x
r-x
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
—
—
TUN<5:0>
bit 7
bit 0
Legend:
R = Readable bit
U = Unimplemented bit
W = Writable bit
P = Programmable bit
-n = Bit Value at POR: (‘0’, ‘1’, x = Unknown)
r = Reserved bit
bit 31:6
bit 5-0
Reserved: Write ‘0’; ignore read
TUN<5:0>: FRC Oscillator Tuning bits
011111 = Maximum frequency.
011110 =
•
000001 =
000000 = Center frequency. Oscillator runs at calibrated frequency.
111111 =
•
100001 =
100000 = Minimum frequency.
DS61143E-page 60
Preliminary
© 2008 Microchip Technology Inc.