Information

PIC16F87/88
DS80365A-page 2 © 2008 Microchip Technology Inc.
Change 2. Register 4-1
The descriptions of bits<5:0> are modified, as
highlighted by the change bars.
REGISTER 4-1: OSCTUNE: OSCILLATOR TUNING REGISTER (ADDRESS 90h)
U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
— — TUN5 TUN4 TUN3 TUN2 TUN1 TUN0
bit 7 bit 0
Legend:
R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’
-n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown
bit 7-6 Unimplemented: Read as ‘0’
bit 5-1 TUN<5:1>: Frequency Tuning bits
01111 = Maximum frequency
01110 =
•
•
•
00001 =
00000 = Center frequency. Oscillator module is running at the calibrated frequency.
11111 =
•
•
•
10000 = Minimum frequency
bit 0 TUN0: Placeholder – Bit has no effect on the INTRC frequency. It is provided to enable the
OSCTUNE2 register to be incremented and decremented easily.