SH7055S Datasheet, PDF (794/1002 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family/SH7000 Series

Bit 2—Source Select Error Detect (SS): The on-chip program which can be downloaded can be
specified as only one type at a time. When more than two types of the program are selected, the
program is not selected, or the program is selected without mapping, an error occurs.
Bit 2
SS
0
1
Description
Download program can be selected normally
Download error occurs (Multi-selection or program which is not mapped is selected)
Bit 1—Flash Key Register Error Detect (FK): Returns the check result whether the value of
FKEY is set to H'A5.
Bit 1
FK
0
1
Description
FKEY setting is normal (FKEY = H'A5)
FKEY setting is abnormal (FKEY = value other than H'A5)
Bit 0—Success/Fail (SF): Returns the result whether download has ended normally or not.
Bit 0
SF
0
1
Description
Downloading on-chip program has ended normally (no error)
Downloading on-chip program has ended abnormally (error occurs)
(2) Programming/Erasing Initialization
The on-chip programming/erasing program to be downloaded includes the initialization
program.
The specified period pulse must be applied when programming or erasing. The specified pulse
width is made by the method in which wait loop is configured by the CPU instruction. The
operating frequency of the CPU must be set. Since the user branch function is supported, the
user branch destination address must be set.
The initial program is set as a parameter of the programming/erasing program which has
downloaded these settings.
Rev.2.0, 07/03, page 756 of 960