Renesas H8S/2319 series Hardware Manual page 720

Bit 4—Flash Key Register Error Detect (FK): Returns the check result of the value of FKEY
before the start of the programming processing.
Bit 4
FK Description
0 FKEY setting is normal (FKEY = H'5A)
1 FKEY setting is error (FKEY = value other than H'5A)
Bit 3—Reserved: Returns 0.
Bit 2—Write Data Address Detect (WD): When flash memory area is specified as the start
address of the storage destination of the program data, an error occurs.
Bit 2
WD Description
0 Setting of write data address is normal
1 Setting of write data address is abnormal
Bit 1—Write Address Error Detect (WA): When the following area is specified as the start
address of the programming destination, an error occurs.
1. If the start address is outside the flash memory area
2. If the specified address is not a 128-byte boundary (A6 to A0 are not 0)
Bit 1
WA Description
0 Setting of programming destination address is normal
1 Setting of programming destination address is abnormal
Bit 0—Success/Fail (SF): Indicates whether the program processing is ended normally or not.
Bit 0
SF Description
0 Programming is ended normally (no error)
1 Programming is ended abnormally (error occurs)
Rev. 5.00, 12/03, page 690 of 1088