PIC24HJ32GP302_11 Datasheet, PDF (261/368 Pages) Microchip Technology – High-Performance, 16-bit Microcontrollers

PIC24HJ32GP302/304, PIC24HJ64GPX02/X04 AND PIC24HJ128GPX02/X04
TABLE 25-2: PIC24H CONFIGURATION BITS DESCRIPTION (CONTINUED)
Bit Field
Register
RTSP Effect
Description
RSS<1:0>⁽¹⁾
FSS⁽¹⁾
Immediate
Secure Segment RAM Code Protection
11 = No Secure RAM defined
10 = Secure RAM is 256 Bytes less BS RAM
01 = Secure RAM is 2048 Bytes less BS RAM
00 = Secure RAM is 4096 Bytes less BS RAM
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
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
1 = Allow only one reconfiguration
0 = Allow multiple reconfigurations
OSCIOFNC
FOSC
Immediate
OSC2 Pin Function bit (except in XT and HS modes)
1 = OSC2 is clock output
0 = OSC2 is general purpose digital I/O pin
POSCMD<1:0>
FOSC
Immediate
Primary Oscillator Mode Select bits
11 = Primary oscillator disabled
10 = HS Crystal Oscillator mode
01 = XT Crystal Oscillator mode
00 = EC (External Clock) mode
FWDTEN
FWDT
Immediate
Watchdog Timer Enable bit
1 = Watchdog Timer always enabled (LPRC oscillator cannot
be disabled. Clearing the SWDTEN bit in the RCON register
has no effect.)
0 = Watchdog Timer enabled/disabled by user software
(LPRC can be disabled by clearing the SWDTEN bit in the
RCON register)
WINDIS
FWDT
Immediate
Watchdog Timer Window Enable bit
1 = Watchdog Timer in Non-Window mode
0 = Watchdog Timer in Window mode
Note 1: This Configuration register is not available on PIC24HJ32GP302/304 devices.
© 2011 Microchip Technology Inc.
DS70293E-page 261