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Bit
Bit Name
3 to 1
0
SCO
Note:
*
This is a write-only bit. This bit is always read as 0.
Initial
Value
R/W
All 0
R
0
(R)/W*
Description
Reserved
These are read-only bits and cannot be modified.
Source Program Copy Operation
Requests the on-chip programming/erasing program to
be downloaded to the on-chip RAM. When this bit is set
to 1, the on-chip program which is selected by FPCS or
FECS is automatically downloaded in the on-chip RAM
area specified by FTDAR.
In order to set this bit to 1, H'A5 must be written to
FKEY, and this operation must be executed in the on-
chip RAM. Dummy read of FCCS must be executed
twice immediately after setting this bit to 1. All interrupts
must be disabled during download. This bit is cleared to
0 when download is completed.
During program download initiated with this bit,
particular processing which accompanies bank-
switching of the program storage area is executed.
0: Download of the programming/erasing program is
not requested.
[Clearing condition]
•
When download is completed
1: Download of the programming/erasing program is
requested.
[Setting conditions] (When all of the following conditions
are satisfied)
•
H'A5 is written to FKEY
•
Setting of this bit is executed in the on-chip RAM
Rev. 1.00 May 09, 2008 Page 727 of 954
Section 24 Flash Memory
REJ09B0462-0100
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