Notes: 1. Data transfer is performed by byte transfer. The lower 8 bits of the first address written to must be H'00 or H'80. A 128-byte data transfer must be performed even if

writing fewer than 128 bytes; in this case, H'FF data must be written to the extra addresses.

2. Verify data is read in 16-bit (word) units.

3. Even bits for which programming has been completed will be subjected to programming once again if the result of the subsequent verify operation is NG.

4. A 128-byte area for storing program data, a 128-byte area for storing reprogram data, and a 128-byte area for storing additional data must be provided in RAM.

The contents of the reprogram data area and additional data area are modified as programming proceeds.

5. A write pulse of z1 µs or z2 µs is applied according to the progress of the programming operation. See Note7 for details of the pulse widths. When writing of

additional-programming data is executed, a z3 µs write pulse should be applied. Reprogram data X' means reprogram data when the write pulse is applied.

6. The values of x, y, z1, z2, z3, α, β, γ, ε, η, θ, and N are shown in section 22.5, Flash Memory Characteristics.

Reprogram Data Computation Table

Original Data

Verify Data

Reprogram Data

(D)

(V)

(X)

Start of programming

Set SWE bit in FLMCR1

Store 128-byte program data in program

data area and reprogram data area

* 5

Write 128-byte data in RAM reprogram

data area consecutively to flash memory

Apply write pulse z1 µs or z2 µs

Set PV bit in FLMCR1

H'FF dummy write to verify address

Read verify data

Increment address

Additional-programming data computation

Transfer additional-programming data to

additional-programming data area

Reprogram data computation

Transfer reprogram data to reprogram data area

data verification completed?

Clear PV bit in FLMCR1

Successively write 128-byte data from additional-

programming data area in RAM to flash memory

Apply write pulse (Additional programming)

Clear SWE bit in FLMCR1

End of programming

Comments

Programming completed

Programming incomplete;

reprogram

Still in erased state; no action