Microchip Technology MA330020 Scheda Tecnica
dsPIC33FJ06GS101/X02 and dsPIC33FJ16GSX02/X04
DS70000318G-page 268
2008-2014 Microchip Technology Inc.
TABLE 21-2:
dsPIC33F CONFIGURATION BITS DESCRIPTION
Bit Field
Register
RTSP Effect
Description
BWRP
FBS
Immediate
Boot Segment Program Flash Write Protection bit
1
= Boot segment can be written
0
= Boot segment is write-protected
BSS<2:0>
FBS
Immediate
Boot Segment Program Flash Code Protection Size bits
x11
= No boot program Flash segment
Boot Space is 256 Instruction Words (except interrupt vectors):
110
110
= Standard security; boot program Flash segment ends at
0x0003FE
010
= High security; boot program Flash segment ends at
0x0003FE
Boot Space is 768 Instruction Words (except interrupt vectors):
101
101
= Standard security; boot program Flash segment ends at
0x0007FE
001
= High security; boot program Flash segment ends at
0x0007FE
Boot Space is 1792 Instruction Words (except interrupt vectors):
100
100
= Standard security; boot program Flash segment ends at
0x000FFE
000
= High security; boot program Flash segment ends at
0x000FFE
GSS<1:0>
FGS
Immediate
General Segment Code-Protect bits
11
= User program memory is not code-protected
10
= Standard security
0x
= High security
GWRP
FGS
Immediate
General Segment Write-Protect bit
1
= User program memory is not write-protected
0
= User program memory is write-protected
IESO
FOSCSEL
Immediate
Two-speed Oscillator Start-up Enable bit
1
= Start-up device with FRC, then automatically switch to the
user-selected oscillator source when ready
0
0
= Start-up device with user-selected oscillator source
FNOSC<2:0>
FOSCSEL
If clock switch
is enabled,
RTSP effect
is on any
device Reset;
otherwise,
Immediate
Initial Oscillator Source Selection bits
111
= Internal Fast RC (FRC) Oscillator with Postscaler
110
= Internal Fast RC (FRC) Oscillator with Divide-by-16
101
= LPRC Oscillator
100
= Reserved
011
= Primary (XT, HS, EC) Oscillator with PLL
010
= Primary (XT, HS, EC) Oscillator
001
= Internal Fast RC (FRC) Oscillator with PLL
000
= FRC Oscillator
FCKSM<1:0>
FOSC
Immediate
Clock Switching Mode bits
1x
= Clock switching is disabled, Fail-Safe Clock Monitor is disabled
01
= Clock switching is enabled, Fail-Safe Clock Monitor is disabled
00
= Clock switching is enabled, Fail-Safe Clock Monitor is enabled
IOL1WAY
FOSC
Immediate
Peripheral Pin Select Configuration bit
1
= Allows only one reconfiguration
0
= Allows multiple reconfigurations
OSCIOFNC
FOSC
Immediate
OSC2 Pin Function bit (except in XT and HS modes)
1
= OSC2 is the clock output
0
= OSC2 is the general purpose digital I/O pin