Datasheet

 2011-2012 Microchip Technology Inc. DS70652E-page 261
dsPIC33FJ16(GP/MC)101/102 AND dsPIC33FJ32(GP/MC)101/102/104
TABLE 23-4: dsPIC33F CONFIGURATION BITS DESCRIPTION
Bit Field Description
GCP
General Segment Code-Protect bit
1 = User program memory is not code-protected
0 = Code protection is enabled for the entire program memory space
GWRP General Segment Write-Protect bit
1 = User program memory is not write-protected
0 = User program memory is write-protected
IESO Two-Speed Oscillator Start-up Enable bit
1 = Starts up device with FRC, then automatically switches to the user-selected oscillator source
when ready
0 = Starts up device with user-selected oscillator source
PWMLOCK PWM Lock Enable bit
1 = Certain PWM registers may only be written after key sequence
0 = PWM registers may be written without a key sequence
WDTWIN<1:0> Watchdog Timer Window Select bits
11 = WDT window is 24% of WDT period
10 = WDT window is 37.5% of WDT period
01 = WDT window is 50% of WDT period
00 = WDT window is 75% of WDT period
FNOSC<2:0> Oscillator Selection bits
111 = Fast RC Oscillator with Divide-by-N (FRCDIVN)
110 = Reserved; do not use
101 = Low-Power RC Oscillator (LPRC)
100 = Secondary Oscillator (SOSC)
011 = Primary Oscillator with PLL module (MS + PLL, EC + PLL)
010 = Primary Oscillator (MS, HS, EC)
001 = Fast RC Oscillator with Divide-by-N and PLL module (FRCDIVN + PLL)
000 = Fast RC Oscillator (FRC)
FCKSM<1:0> 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 Peripheral Pin Select Configuration bit
1 = Allow only one reconfiguration
0 = Allow multiple reconfigurations
OSCIOFNC OSC2 Pin Function bit (except in MS and HS modes)
1 = OSC2 is clock output
0 = OSC2 is general purpose digital I/O pin
POSCMD<1:0> Primary Oscillator Mode Select bits
11 = Primary Oscillator is disabled
10 = HS Crystal Oscillator mode (10 MHz-32 MHz)
01 = MS Crystal Oscillator mode (3 MHz-10 MHz)
00 = EC (External Clock) mode (DC-32 MHz)
FWDTEN Watchdog Timer Enable bit
1 = Watchdog Timer is always enabled (LPRC oscillator cannot be disabled; clearing the SWDTEN
bit in the RCON register will have no effect)
0 = Watchdog Timer is enabled/disabled by user software (LPRC can be disabled by clearing the
SWDTEN bit in the RCON register)
WINDIS Watchdog Timer Window Enable bit
1 = Watchdog Timer in Non-Window mode
0 = Watchdog Timer in Window mode