Renesas H8S/2318 series, Hardware Manual

Page: 721 / 1121

Rev. 5.00, 12/03, page 691 of 1088
(4) Erasure Execution
When flash memory is erased, the erase-block number on the user MAT must be passed to the
erasing program which is downloaded. This is set to the FEBS parameter (general register ER0).
One block is specified from the block number 0 to 15.
For details on the erasing processing procedure, see section 17.24.2, User Program Mode.
(a) Flash erase block select parameter (FEBS: general register ER0 of CPU)
This parameter specifies the erase-block number. The several block numbers cannot be specified.
Bit : 31 30 29 28 27 26 25 24
0 0 0 0 0 0 0 0
Initial value : — — — — — — — —
R/W : R/W R/W R/W R/W R/W R/W R/W R/W
Bit : 23 22 21 20 19 18 17 16
0 0 0 0 0 0 0 0
Initial value : — — — — — — — —
R/W : R/W R/W R/W R/W R/W R/W R/W R/W
Bit : 15 14 13 12 11 10 9 8
0 0 0 0 0 0 0 0
Initial value : — — — — — — — —
R/W : R/W R/W R/W R/W R/W R/W R/W R/W
Bit : 7 6 5 4 3 2 1 0
EB7 EB6 EB5 EB4 EB3 EB2 EB1 EB0
Initial value : — — — — — — — —
R/W : R/W R/W R/W R/W R/W R/W R/W R/W
Bits 31 to 8—Reserved: Only 0 may be written to these bits.
Bits 7 to 0—Erase Block (EB7 to EB0): Set the erase-block number in the range from 0 to 15. 0
corresponds to the EB0 block and 15 corresponds to the EB15 block. An error occurs when the
number other than 0 to 15 is set.