PIC32MM0256GPM028 configuration bits

The configuration words (DEVCFG0 to DEVCFG3, and on the newer chips the code-protect, signature and boot words) sit in boot flash and set the oscillator and PLL, the watchdog, the debugger pins, code protection and the peripheral options the chip starts with. Pick a setting and the word below updates; the starting values are the defaults in Microchip's device file, and an erased bit reads 1. In XC32 each setting is a #pragma config FNOSC = FRCPLL line.

FDEVOPT · 0xBFC017C4

0xFFFFFFFFdefault 0xFFFFFFFF

FVBUSIOVBUS Pin ControlFUSBIDIOUSBID pin controlALTI2CAlternate I2C1 Pins Location Enable bitSOSCHPSecondary Oscillator High Power Enable bitUSERIDUser ID bits

FICD · 0xBFC017C8

0xFFFFFFFFdefault 0xFFFFFFFF

ICSICE/ICD Communication Channel Selection bitsJTAGENJTAG Enable bit

FPOR · 0xBFC017CC

0xFFFFFFFFdefault 0xFFFFFFFF

LPBORENDownside Voltage Protection Enable bitRETVRRetention Voltage Regulator Enable bitBORENBrown-out Reset Enable bits

FWDT · 0xBFC017D0

0xFFFFFFFFdefault 0xFFFFFFFF

FWDTENWatchdog Timer Enable bitRCLKSELRun Mode Watchdog Timer Clock Source Selection bitsRWDTPSRun Mode Watchdog Timer Postscale Selection bitsWINDISWindowed Watchdog Timer Disable bitFWDTWINSZWatchdog Timer Window Size bitsSWDTPSSleep Mode Watchdog Timer Postscale Selection bits

FOSCSEL · 0xBFC017D4

0xFFFFFFFFdefault 0xFFFFFFFF

FCKSMClock Switching and Fail-Safe Clock Monitor Enable bitsSOSCSELSecondary Oscillator External Clock Enable bitOSCIOFNCSystem Clock on CLKO Pin Enable bitPOSCMODPrimary Oscillator Selection bitIESOTwo Speed Startup Enable bitSOSCENSecondary Oscillator Enable bitPLLSRCSystem PLL Input Clock Selection bitFNOSCOscillator Selection bits

FSEC · 0xBFC017D8

0xFFFFFFFFdefault 0xFFFFFFFF

CPCode Protection Enable bit

FSIGN · 0xBFC017E0

0xFFFFFFFFdefault 0xFFFFFFFF

SIGN