H8SXSLASH1663M datasheet(1152/1504 Pages) RENESAS

1152 / 1504 page

Section 25 Flash Memory

Rev. 2.00 Sep. 24, 2008 Page 1120 of 1468

REJ09B0412-0200

Bit

Bit Name

Initial

Value

R/W

Description

3 to 1



All 0

Reserved

These are read-only bits and cannot be modified.

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 or

FECS is automatically downloaded in the on-chip RAM

area specified by FTDAR.

In order to set this bit to 1, the RAM emulation mode

must be canceled, 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.

Before a download request, initialize the VBR contents

to H'00000000. After download is completed, the VBR

contents can be changed.

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)

• Not in RAM emulation mode (the RAMS bit in

RAMER is cleared to 0)

• H'A5 is written to FKEY

• Setting of this bit is executed in the on-chip RAM

Note:

This is a write-only bit. This bit is always read as 0.

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