HD6432138SW datasheet(656/1061 Pages) RENESAS

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Section 21 ROM (Mask ROM Version, H8S/2138 F-ZTAT, H8S/2134 F-ZTAT, and H8S/2132 F-ZTAT)

Rev. 4.00 Jun 06, 2006 page 602 of 1004

REJ09B0301-0400

Set SWE bit in FLMCR1

Wait (x)

µs

n = 1

m = 0

Write 32-byte data in RAM reprogram data

area consecutively to flash memory

Enable WDT

Set PSU bit in FLMCR2

Wait (y)

µs

Set P bit in FLMCR1

Wait (z)

µs

Start of programming

Clear P bit in FLMCR1

Wait (

α) µs

Wait (

β) µs

Wait (

γ) µs

Wait (

ε) µs

Store 32-byte program data in program

data area and reprogram data area

Wait (

η) µs

Clear PSU bit in FLMCR2

Disable WDT

Set PV bit in FLMCR1

H'FF dummy write to verify address

Read verify data

Reprogram data computation

Clear PV bit in FLMCR1

Clear SWE bit in FLMCR1

m = 1

End of programming

Program data =

verify data?

End of 32-byte

data verification?

m = 0?

Increment address

Programming failure

Clear SWE bit in FLMCR1

≥ N?

← n + 1

Notes: 1. Data transfer is performed by byte transfer. The lower

8 bits of the first address written to must be H'00, H'20, H'40,

H'60, H'80, H'A0, H'C0, or H'E0. A 32-byte data transfer

must be performed even if writing fewer than 32 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. If a bit for which programming has been completed in the 32-byte

programming loop fails the following verify phase, additional

programming is performed for that bit.

4. An area for storing program data (32 bytes) and reprogram data

(32 bytes) must be provided in RAM. The contents of the latter

are rewritten as programming progresses.

5. See section 25, Electrical Characteristics, Flash Memory

Characteristics, for the values of x, y, z,

α, β, γ, ε, η, and N.

Start

Program

Data

Reprogram

Data

Comments

Reprogramming is not

performed if program data

and verify data match

Programming incomplete;

reprogram

—

Still in erased state;

no action

RAM

Program data storage

area (32 bytes)

Reprogram data storage

area (32 bytes)

Transfer reprogram data to reprogram

data area

Verify

Data

End of programming

Perform programming in the erased state.

Do not perform additional programming

on previously programmed addresses.

Figure 21.12 Program/Program-Verify Flowchart

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