p2125vps20 Renesas Electronics Corporation., p2125vps20 Datasheet - Page 508

• Manufacturer Part Number: p2125vps20
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 19 Flash Memory (0.18-µm F-ZTAT Version)
Note:
Rev. 1.00 Sep. 21, 2006 Page 470 of 658
REJ09B0310-0100
Bit
0
*
Bit Name
SCO
This bit is a write only bit. This bit is always read as 0.
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 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.
Immediately after setting this bit to 1, four NOP
instructions must be executed. Since this bit is cleared to
0 when download is completed, this bit cannot be read as
1. All interrupts must be disabled during downloading.
Interrupts must be masked within the user system.
0: Download of the on-chip programming/erasing
[Clearing condition]
When download is completed
1: Request to download the on-chip programming/erasing
[Setting conditions]
When all of the following conditions are satisfied and this
bit is set to 1
•
•
program to the on-chip RAM is not executed.
program to the on-chip RAM has occurred.
H'A5 is written to FKEY
During execution in the on-chip RAM