30.1 Configuration Bits

In dsPIC33CK512MPT608 family devices, the Configuration Words are implemented as volatile memory. This means that configuration data will get loaded to volatile memory (from the Flash Configuration Words) each time the device is powered up. Configuration data are stored at the end of the on-chip program memory space, known as the Flash Configuration Words. Their specific locations are shown in Table 30-1. The configuration data are automatically loaded from the Flash Configuration Words to the proper Configuration Shadow registers during device Resets.

When creating applications for these devices, users should always specifically allocate the location of the Flash Configuration Words for configuration data in their code for the compiler. This is to make certain that program code is not stored in this address when the code is compiled. Program code executing out of configuration space will cause a device Reset.

Note: Performing a page erase operation on the last page of program memory clears the Flash Configuration Words.

Table 30-1. dsPIC33CK512MPT608 Configuration Addresses
Register Name	Single Partition		Dual Partition, Active		Dual Partition, Inactive
Register Name	256k Address	512k Address	256k Address	512k Address	256k Address	512k Address
FSEC⁽¹⁾	0x02BF00	0x057F00	0x015F00	0x02BF00	0x415F00	0x42BF00
FBSLIM⁽¹⁾	0x02BF10	0x057F10	0x015F10	0x02BF10	0x415F10	0x42BF10
FSIGN⁽¹⁾	0x02BF14	0x057F14	0x015F14	0x02BF14	0x415F14	0x42BF14
FOSCSEL	0x02BF18	0x057F18	0x015F18	0x02BF18	0x415F18	0x42BF18
FOSC	0x02BF1C	0x057F1C	0x015F1C	0x02BF1C	0x415F1C	0x42BF1C
FWDT	0x02BF20	0x057F20	0x015F20	0x02BF20	0x415F20	0x42BF20
FPOR	0x02BF24	0x057F24	0x015F24	0x02BF24	0x415F24	0x42BF24
FICD	0x02BF28	0x057F28	0x015F28	0x02BF28	0x415F28	0x42BF28
FDMTIVTL	0x02BF2C	0x057F2C	0x015F2C	0x02BF2C	0x415F2C	0x42BF2C
FDMTIVTH	0x02BF30	0x057F30	0x015F30	0x02BF30	0x415F30	0x42BF30
FDMTCNTL	0x02BF34	0x057F34	0x015F34	0x02BF34	0x415F34	0x42BF34
FDMTCNTH	0x02BF38	0x057F38	0x015F38	0x02BF38	0x415F38	0x42BF38
FDMT	0x02BF3C	0x057F3C	0x015F3C	0x02BF3C	0x415F3C	0x42BF3C
FDEVOPT	0x02BF40	0x057F40	0x015F40	0x02BF40	0x415F40	0x42BF40
FALTREG	0x02BF44	0x057F44	0x015F44	0x02BF44	0x415F44	0x42BF44
FALTSEQ	0x02BFFC	0x057FFC	0x015FFC	0x02BFFC	0x415FFC	0x42BFFC
FBOOT⁽²⁾	0x801800
Note: Changes to the Inactive Partition Configuration Words affect how the Active Partition accesses the Inactive Partition. FBOOT resides in calibration memory space.