Microchip Technology DV164136 Data Sheet
PIC18F87J11 FAMILY
DS39778E-page 104
2007-2012 Microchip Technology Inc.
7.5.3
WRITE VERIFY
Depending on the application, good programming
practice may dictate that the value written to the
memory should be verified against the original value.
This should be used in applications where excessive
writes can stress bits near the specification limit.
practice may dictate that the value written to the
memory should be verified against the original value.
This should be used in applications where excessive
writes can stress bits near the specification limit.
7.5.4
UNEXPECTED TERMINATION OF
WRITE OPERATION
WRITE OPERATION
If a write is terminated by an unplanned event, such as
loss of power or an unexpected Reset, the memory
location just programmed should be verified and repro-
grammed if needed. If the write operation is interrupted
by a MCLR Reset or a WDT Time-out Reset, during
normal operation, the user can check the WRERR bit
and rewrite the location(s) as needed.
loss of power or an unexpected Reset, the memory
location just programmed should be verified and repro-
grammed if needed. If the write operation is interrupted
by a MCLR Reset or a WDT Time-out Reset, during
normal operation, the user can check the WRERR bit
and rewrite the location(s) as needed.
7.6
Flash Program Operation During
Code Protection
Code Protection
See
program memory.
TABLE 7-2:
REGISTERS ASSOCIATED WITH PROGRAM FLASH MEMORY
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Reset
Values
on Page:
TBLPTRU
—
—
bit 21
Program Memory Table Pointer Upper Byte (TBLPTR<20:16>)
TBPLTRH Program Memory Table Pointer High Byte (TBLPTR<15:8>)
TBLPTRL Program Memory Table Pointer Low Byte (TBLPTR<7:0>)
TABLAT
Program Memory Table Latch
INTCON
GIE/GIEH PEIE/GIEL TMR0IE
INT0IE
RBIE
TMR0IF
INT0IF
RBIF
EECON2 Program Memory Control Register 2 (not a physical register)
EECON1
—
—
WPROG
FREE
WRERR
WREN
WR
—
Legend:
— = unimplemented, read as ‘0’. Shaded cells are not used during Flash program memory access.