HD64F3437TF16 Datasheet, PDF (496/752 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.

Sample Multiple-Block Erase Program: This program uses the following registers.
R0: Specifies blocks to be erased (set as explained below), and also stores address used in
prewrite and erase-verify.
R1H: Used to test bits 8 to 15 of R0 stores register read data, and also used for dummy write.
R1L: Used to test bits 0 to 15 of R0.
R2: Specifies address where address used in prewrite and erase-verify is stored.
R3: Stores address used in prewrite and erase-verify.
R4: Stores last address of block to be erased.
R5: Sets prewrite and erase timing loop counters.
R6L: Used for prewrite-verify and erase-verify fail count.
Arbitrary blocks can be erased by setting bits in R0. Write R0 with a word transfer instruction.
A bit map of R0 and a sample setting for erasing specific blocks are shown next.
Bit
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
R0
LB7 LB6 LB5 LB4 LB3 LB2 LB1 LB0 SB7 SB6 SB5 SB4 SB3 SB2 SB1 SB0
Corresponds to EBR1
Corresponds to EBR2
Example: to erase blocks LB2, SB7, and SB0
Bit
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
R0
LB7 LB6 LB5 LB4 LB3 LB2 LB1 LB0 SB7 SB6 SB5 SB4 SB3 SB2 SB1 SB0
Corresponds to EBR1
Corresponds to EBR2
Setting 0 0 0 0 0 1 0 0 1 0 0 0 0 0 0 1
R0 is set as follows:
MOV.W #H'0481,R0
MOV.W R0,
@EBR1
The setting of #a, #b, #c, #d, and #e values in the program depends on the clock frequency. Set #a,
#b, #c, #d, and #e values according to tables 20.9 (1), (2), and 20.10.
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