Fujitsu 32-Bit Microcontroller MB9B500 Series Manual de usuario descargar pdf (Pagina 16)

4.2 Nand Flash

 Hardware Setting

None

 Flowchart

Start

Initial external bus

(Use CS7 area,

8 bit data width)

Read Flash ID

Erase page 11 of

block 0

Write data into

page 11 of block 0

Read data from

page 11 of block 0

Erase page 20 of

block 100

Write data into page

20 of block 100

Read data from page

20 of block 100

End

Figure 4-4: Nand Flash Sample Code Flowchart

 Usage

1) Open Nand Flash sample project, and start debug.

2) Use “step over” to debug, and watch local variable “flash_id”, “buf”.

4.3 RTC

 Hardware Setting

It is an option that user can user external battery to supply power for RTC module

(RX8025-T) so that the date and time can be stored after system power shut down.

 Flowchart

Start

Initial MFS channel 5

(set IIC mode)

Enable FOE signal

(FOUT output 32.768khz

wave after it is enabled)

Write 8 to hour register

Write 30 to minute register

Write 0 to second register Read to second register

Read to minute register

Read to hour register

Figure 4-5: RTC Sample Code Flowchart

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 33 34

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Fujitsu 32-Bit Microcontroller MB9B500 Series Manual de usuario Pagina 16

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