Microchip Technology MA330016 Data Sheet

DS70290J-page 190

© 2007-2011 Microchip Technology Inc.

BWRP

FBS

Immediate Boot Segment Program Flash Write Protection

1 = Boot segment may be written
0 = Boot segment is write-protected

BSS<2:0>

FBS

Immediate dsPIC33FJ32GP202 and dsPIC33FJ32GP204 Devices Only

Boot Segment Program Flash Code Protection Size
X11 = No Boot program Flash segment

Boot space is 768 Instruction Words (except interrupt vectors)
110 = Standard security; boot program Flash segment ends at 0x0007FE
010 = High security; boot program Flash segment ends at 0x0007FE

Boot space is 3840 Instruction Words (except interrupt vectors)
101 = Standard security; boot program Flash segment, ends at 0x001FFE
001 = High security; boot program Flash segment ends at 0x001FFE

Boot space is 7936 Instruction Words (except interrupt vectors)
100 = Standard security; boot program Flash segment ends at 0x003FFE
000 = High security; boot program Flash segment ends at 0x003FFE

BSS<2:0>

FBS

Immediate dsPIC33FJ16GP304 Devices Only

Boot Segment Program Flash Code Protection Size
X11 = No Boot program Flash segment

Boot space is 768 Instruction Words (except interrupt vectors)
110 = Standard security; boot program Flash segment ends at 0x0007FE
010 = High security; boot program Flash segment ends at 0x0007FE

Boot space is 3840 Instruction Words (except interrupt vectors)
101 = Standard security; boot program Flash segment, ends at 0x001FFE
001 = High security; boot program Flash segment ends at 0x001FFE

Boot space is 5376 Instruction Words (except interrupt vectors)
100 = Standard security; boot program Flash segment ends at 0x002BFE
000 = High security; boot program Flash segment ends at 0x002BFE

GSS<1:0>

FGS

Immediate General Segment Code-Protect bit

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