PIC16LF145X Datasheet, PDF (20/38 Pages) Microchip Technology – PIC16(L)F145X Memory Programming Specification

PIC16(L)F145X
5.0 PROGRAMMING ALGORITHMS
The devices use internal latches to temporarily store
the 14-bit words used for programming. Refer to
Table 4-3 for specific latch information. The data
latches allow the user to write the program words with
a single Begin Externally Timed Programming or Begin
Internally Timed Programming command. The Load
Program Data or the Load Configuration command is
used to load a single data latch. The data latch will hold
the data until the Begin Externally Timed Programming
or Begin Internally Timed Programming command is
given.
The data latches are aligned with the LSbs of the
address. The PC’s address at the time the Begin
Externally Timed Programming or Begin Internally
Timed Programming command is given will determine
which location(s) in memory are written. Writes cannot
cross the physical boundary. For example, with the
PIC16F1455, attempting to write from address 0002h-
0009h will result in data being written to 0008h-000Fh.
If more than the maximum number of data latches are
written without a Begin Externally Timed Programming
or Begin Internally Timed Programming command, the
data in the data latches will be overwritten. The
following figures show the recommended flowcharts for
programming.
DS41620C-page 20
Advance Information
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