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PIC18F2520E/MLQTP 数据表(PDF) 32 Page - Microchip Technology

部件名 PIC18F2520E/MLQTP
功能描述  28/40/44-Pin Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology
PDF  390 Pages
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制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

PIC18F2520E/MLQTP 数据表(HTML) 32 Page - Microchip Technology

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PIC18F2420/2520/4420/4520
DS39631A-page 30
Preliminary
 2004 Microchip Technology Inc.
REGISTER 2-2:
OSCCON REGISTER
R/W-0
R/W-1
R/W-0
R/W-0
R(1)
R-0
R/W-0
R/W-0
IDLEN
IRCF2
IRCF1
IRCF0
OSTS
IOFS
SCS1
SCS0
bit 7
bit 0
bit 7
IDLEN: Idle Enable bit
1
= Device enters Idle mode on SLEEP instruction
0
= Device enters Sleep mode on SLEEP instruction
bit 6-4
IRCF2:IRCF0: Internal Oscillator Frequency Select bits
111
= 8 MHz (INTOSC drives clock directly)
110
= 4 MHz
101
= 2 MHz
100
= 1 MHz(3)
011
= 500 kHz
010
= 250 kHz
001
= 125 kHz
000
= 31 kHz (from either INTOSC/256 or INTRC directly)(2)
bit 3
OSTS: Oscillator Start-up Time-out Status bit(1)
1
= Oscillator start-up time-out timer has expired; primary oscillator is running
0
= Oscillator start-up time-out timer is running; primary oscillator is not ready
bit 2
IOFS: INTOSC Frequency Stable bit
1
= INTOSC frequency is stable
0
= INTOSC frequency is not stable
bit 1-0
SCS1:SCS0: System Clock Select bits
1x
= Internal oscillator block
01
= Secondary (Timer1) oscillator
00
= Primary oscillator
Note 1: Reset state depends on state of the IESO configuration bit.
2: Source selected by the INTSRC bit (OSCTUNE<7>), see text.
3: Default output frequency of INTOSC on Reset.
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



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