H8SSLASH2218 datasheet(628/750 Pages) RENESAS

628 / 750 page

Section 17 Flash Memory (F-ZTAT Version)

Rev.6.00 Jun. 03, 2008 Page 580 of 698

REJ09B0074-0600

Write pulse application subroutine

Subroutine Write Pulse

End Sub

Set PSU1 bit in FLMCR1

WDT enable

Disable WDT

Note: 7. Write Pulse Width

Wait (y)

µs

Set P1 bit in FLMCR1

Wait (z0), (z1), or (z2)

µs

Clear P1 bit in FLMCR1

Wait (

α) µs

Clear PSU1 bit in FLMCR1

Wait (

β) µs

*5*6

Original Data

(D)

Verify Data

(V)

Reprogram Data

(X)

Comments

Programming completed

Still in erased state; no action

Programming incomplete;

reprogram

RAM

Program data storage

area (128 bytes)

Reprogram data storage

area (128 bytes)

Additional-programming

data storage area

(128 bytes)

Reprogram Data Computation Table

Reprogram Data

(X')

Verify Data

(V)

Additional-

Programming Data (Y)

Comments

Additional programming

to be executed

Additional programming

not to be executed

Additional programming

not to be executed

Additional programming

not to be executed

Additional-Programming Data Computation Table

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. Reprogram data is determined by the operation shown in the table below (comparison between the data stored in the program data area and the verify data). Bits for

which the reprogram data is 0 are programmed in the next reprogramming loop. Therefore, 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 z0 or z1 is applied according to the progress of the programming operation. See note 7 for details of the pulse widths. When writing of additional-

programming data is executed, a z2 write pulse should be applied. Reprogram data X' means reprogram data when the write pulse is applied.

6. x, y, z0, z1, z2,

α, β, γ, ε, η, θ, N1, and N2 are shown in section 22.7, Flash Memory Characteristics.

START

End of programming

Set SWE1 bit in FLMCR1

Start of programming

Wait (x)

µs

n = 1

m = 0

Yes

Wait (

γ) µs

Wait (

ε) µs

Wait (

η) µs

Apply Write pulse Z0

µs or Z1µs

Sub-Routine-Call

Set PV1 bit in FLMCR1

H'FF dummy write to verify address

Read verify data

Write data =

verify data?

Transfer reprogram data to reprogram data area

Reprogram data computation

Transfer additional-programming data to

additional-programming data area

Additional-programming data computation

Clear PV1 bit in FLMCR1

Clear SWE1 bit in FLMCR1

m = 1

Reprogram

See Note 7 for pulse width

m = 0 ?

Increment address

Programming failure

Yes

Clear SWE1 bit in FLMCR1

Wait (

θ) µs

Yes

≥ n?

Yes

≥ n ?

Wait (

θ) µs

≥ (N1 + N2)?

← n + 1

Write 128-byte data in RAM reprogram

data area consecutively to flash memory

Store 128-byte program data in program

data area and reprogram data area

Apply Write Pulse (Additional programming) z2

μs

Sub-Routine-Call

128-byte

data verification completed?

Successively write 128-byte data from additional-

programming data area in RAM to flash memory

Perform programming in the erased state.

Do not perform additional programming

on previously programmed addresses.

P1 bit set time (µs)*6

1z2

N1-1

N1+1

N1+2

N1+3

N1+N2-1

N1+N2-2

N1+N2

Number of Writes n

Program

Re -program

Figure 17.12 Program/Program-Verify Flowchart

H8S/2218 数据表(PDF) 628 Page - Renesas Technology Corp

H8S/2218 数据表(HTML) 628 Page - Renesas Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

数据表下载

链接网址

H8S/2218 数据表(PDF) 628 Page - Renesas Technology Corp

H8S/2218 数据表(HTML) 628 Page - Renesas Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

数据表 下载

链接网址

数据表下载