Hitachi F-ZTAT H8/3039 Series Hardware Manual page 605

EBR—Erase Block Register
Bit
Modes 1 to Initial value
4, and 6 Read/Write
Modes 5 Initial value
to 7 Read/Write
Note: When not erasing flash memory, EBR should be cleared to H'00.
This register is used only in the flash memory versions. Reading the corresponding address
in a mask ROM version will always return 1s, and writes to this address are disabled.
1s cannot be set in this register in mode 6.
7 6 5
EB7 EB6 EB5
0 0 0
R R R
0 0 0
R/W R/W R/W
Block 7 to 0
0 Block EB7 to EB0 is not selected (Initial value)
Block EB7 to EB0 is selected
1
H'42
4 3 2
EB4 EB3 EB2
0 0 0
R R R
0 0 0
R/W R/W R/W
Flash memory
1 0
EB1 EB0
0 0
R R
0 0
R/W R/W
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