R5F72115D160FPV datasheet(924/1228 Pages) RENESAS

924 / 1228 page

Section 21 Flash Memory

Rev. 2.00 May. 08, 2008 Page 900 of 1200

REJ09B0344-0200

Bit

Bit Name

Initial

Value

R/W

Description

SCO

(R)/W

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, H'A5 must be written to FKEY

and this operation must be in the on-chip RAM.

Thirty-two NOP instructions must be executed

immediately after setting this bit to 1.

For interrupts during download, see section 21.7.2,

Interrupts during Programming/Erasing. For the download

time, see section 21.7.3, 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'80000000.

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

to the on-chip RAM is not executed.

[Clearing condition]

When download is completed

1: Request that the on-chip programming/erasing program

is downloaded to the on-chip RAM is generated

[Setting conditions]

When all of the following conditions are satisfied and 1 is

written to this bit

• FKEY is written to H'A5

• During execution in the on-chip RAM

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