PIC24F04KA200 Datasheet, PDF (13/26 Pages) Microchip Technology – Flash Programming Specifications

3.7 Writing Configuration Registers
The procedure for writing the Configuration registers is
the same as for writing code memory. The only differ-
ence is that only one word is programmed in each
operation. When writing Configuration registers, one
word is programmed during each operation. Only work-
ing register, W0, is used as a temporary holding register
for the data to be programmed.
Table 3-6 provides the default values of the
Configuration registers.
Note:
The TBLPAG register is hard-coded to
0xF8 (the upper byte address of all
locations of the Configuration registers).
Table 3-6 provides the ICSP programming details for
programming the Configuration registers, including the
serial pattern with the ICSP command code, which
must be transmitted, LSB first, using the PGCx and
PGDx pins (see Figure 3-2). In Step 1 of Table 3-7, the
Reset vector is exited. In Step 2, the NVMCON register
is initialized for programming code memory. In Step 3,
the 24-bit starting destination address for programming
is loaded into the TBLPAG register and W7 register.
Note: The TBLPAG register must be loaded with
F8h.
PIC24FXXKA2XX
TABLE 3-6:
DEFAULT VALUES FOR
CONFIGURATION REGISTER
SERIAL INSTRUCTION
Configuration
Registers
Value
FGS
03h
FOSCSEL
87h
FOSC
FFh
FWDT
DFh
FPOR
FBh
FICD⁽¹⁾
C3h
FDS
FFh
Note 1:
The Configuration register, FICD, is a
reserved location and should be
programmed with the default value given
above.
 2010 Microchip Technology Inc.
DS39991A-page 13