HD64F3437TF16 Datasheet, PDF (659/752 Pages) Hitachi Semiconductor – 12 V must not be applied to the S-mask model (single-power-supply specification), as this may permanently damage the device.

EBR1—Erase Block Register 1
• H8/3434F
Bit
7
6
—
—
Initial value
1
1
Read/Write
—
—
• H8/3437F
Bit
Initial value
Read/Write
7
6
LB7
LB6
0
0
R/W
R/W
(Dual-power-supply flash memory only)
H'82
Flash memory
5
4
3
2
1
0
—
—
LB3
LB2
LB1
LB0
1
1
0
0
0
0
—
—
R/W
R/W
R/W
R/W
Large Block 3 to 0
0 Corresponding block (LB3 to LB0) is not selected
1 Corresponding block (LB3 to LB0) is selected
5
4
3
2
1
0
LB5
LB4
LB3
LB2
LB1
LB0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
Large Block 7 to 0
0 Corresponding block (LB7 to LB0) is not selected
(Initial value)
1 Corresponding block (LB7 to LB0) is selected
630