Datasheet

dsPIC33FJ32GS406/606/608/610 and dsPIC33FJ64GS406/606/608/610
DS70591E-page 346  2009-2012 Microchip Technology Inc.
TABLE 24-2: 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 = 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 = 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 = 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 = 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 = Secondary (LP) Oscillator
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
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
POSCMD<1:0> FOSC Immediate Primary Oscillator Mode Select bits
11 = Primary Oscillator is disabled
10 = HS Crystal Oscillator mode
01 = XT Crystal Oscillator mode
00 = EC (External Clock) mode