r5f71374an80fpv Renesas Electronics Corporation., r5f71374an80fpv Datasheet - Page 922

• Manufacturer Part Number: r5f71374an80fpv
• Description: 32-bit Risc Microcomputer Superh?? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

Section 22 Flash Memory
Rev. 1.00 Sep. 21, 2007 Page 896 of 1124
REJ09B0402-0100
Bit
0
Bit Name
SCO
Initial
Value
0
R/W
(R)/W
Description
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/FECS is automatically downloaded in
the on-chip RAM area specified by FTDAR.
In order to set this bit to 1, RAM emulation state must be
canceled, H'A5 must be written to FKEY, and this
operation must be in the on-chip RAM.
Four NOP instructions must be executed immediately after
setting this bit to 1.
For interrupts during download, see section 22.8.2,
Interrupts during Programming/Erasing. For the download
time, see section 22.8.3, Other Notes.
Since this bit is cleared to 0 when download is completed,
this bit cannot be read as 1.
Download by setting the SCO bit to 1 requires a special
interrupt processing that performs bank switching to the
on-chip program storage area. Therefore, before issuing a
download request (SCO = 1), set VBR to H'84000000.
Otherwise, the CPU gets out of control. Once download
end is confirmed, VBR can be changed to any other value.
The mode in which the FWE pin is high must be used
when using the SCO function.
0: Download of the on-chip programming/erasing program
[Clearing condition]
When download is completed
1: Request that the on-chip programming/erasing program
[Setting conditions]
When all of the following conditions are satisfied and 1 is
written to this bit
•
•
•
to the on-chip RAM is not executed.
is downloaded to the on-chip RAM is generated
FKEY is written to H'A5
During execution in the on-chip RAM
Not in RAM emulation mode (RAMS in RAMCR = 0)