PIC24F32KA302-ISLASHML datasheet(64/364 Pages) MICROCHIP

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PIC24FV32KA304 FAMILY

DS39995D-page 64

 2011-2013 Microchip Technology Inc.

NVMCON: NONVOLATILE MEMORY CONTROL REGISTER

R/S-0, HC

R/W-0

U-0

WREN

WRERR

PGMONLY

—

bit 15

bit 8

U-0

R/W-0

—

ERASE

NVMOP5

NVMOP4

NVMOP3

NVMOP2

NVMOP1

NVMOP0

bit 7

bit 0

Legend:

HC = Hardware Clearable bit

U = Unimplemented bit, read as ‘0’

R = Readable bit

W = Writable bit

S = Settable bit

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 15

WR: Write Control bit (program or erase)

1 = Initiates a data EEPROM erase or write cycle (can be set, but not cleared in software)

0 = Write cycle is complete (cleared automatically by hardware)

bit 14

WREN: Write Enable bit (erase or program)

1 = Enables an erase or program operation

0 = No operation allowed (device clears this bit on completion of the write/erase operation)

bit 13

WRERR: Write Flash Error Flag bit

1 = A write operation is prematurely terminated (any MCLR or WDT Reset during programming

operation)

0 = The write operation completed successfully

bit 12

PGMONLY: Program Only Enable bit

1 = Write operation is executed without erasing target address(es) first

0 = Automatic erase-before-write

Write operations are preceded automatically by an erase of the target address(es).

bit 11-7

Unimplemented: Read as ‘0’

bit 6

ERASE: Erase Operation Select bit

1 = Performs an erase operation when WR is set

0 = Performs a write operation when WR is set

bit 5-0

NVMOP<5:0>: Programming Operation Command Byte bits

Erase Operations (when ERASE bit is ‘1’):

011010 = Erases 8 words

011001 = Erases 4 words

011000 = Erases 1 word

0100xx = Erases entire data EEPROM

Programming Operations (when ERASE bit is ‘0’):

0010xx = Writes 1 word

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