12.1.5.10 General-purpose NVM (GPNVM) Bits

All PIC32CZ CA70/MC70 devices feature general-purpose NVM (GPNVM) bits that can be cleared or set through the Clear GPNVM Bit and Set GPNVM Bit commands of the EEFC User Interface.

Table 12-4. General-purpose Non volatile Memory Bits
GPNVM BitFunction
0Security bit

0: Not secure (default)

1: Secure

1Boot mode selection

0: ROM (default)

1: Flash

2Erase Lock

0: No erase lock (default)

1: Erase lock (only if the security bit = 1)

5:03Free
6Reserved
8:07TCM configuration

00: 0 Kbytes DTCM + 0 Kbytes ITCM (default)

01: 32 Kbytes DTCM + 32 Kbytes ITCM

10: 64 Kbytes DTCM + 64 Kbytes ITCM

11: 128 Kbytes DTCM + 128 Kbytes ITCM

Note: After programming, a user reboot must be done.