Datasheet

PIC24F16KA102 FAMILY

DS39927C-page 52  2008-2011 Microchip Technology Inc.

R/S-0, HC R/W-0 R/W-0 R/W-0 U-0 U-0 U-0 U-0

WR WREN WRERR PGMONLY

— — — —

bit 15 bit 8

U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0

— ERASE NVMOP5 NVMOP4 NVMOP3 NVMOP2 NVMOP1 NVMOP0

bit 7 bit 0

Legend: U = Unimplemented bit, read as ‘0’

R = Readable bit W = Writable bit S = Settable bit HC = Hardware Clearable 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 = Enable an erase or program operation

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

bit 13 WRERR: 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 target

address(es)

bit 11-7 Unimplemented: Read as ‘0’

bit 6 ERASE: Erase Operation Select bit

1 = Perform an erase operation when WR is set

0 = Perform 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 = Erase 8 words

011001 = Erase 4 words

011000 = Erase 1 word

0100xx = Erase entire data EEPROM

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

001xx = Write 1 word