SH7052 datasheet(784/919 Pages) RENESAS

tên linh kiện	SH7052

Giải thích chi tiết về linh kiện	SuperHTM RISC engine

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21.6.2

User Program Mode

After setting FWE, the user should branch to, and execute, the previously prepared

programming/erase control program.

The Flash memory cannot be read while the flash memory is being written/erased. Execute the

control program for programming or erasing using the on-chip RAM, external memory, or flash

memory outside the address areas.

Use the following procedure (figure 21.12) to execute the programming control program that

writes to flash memory (when transferred to RAM).

Execute user application

program

Execute programming/

erase control program in RAM

(flash memory rewriting)

Transfer programming/erase

control program to RAM

FWE = 1

(user program mode)

Write FWE assessment program

and transfer program

Figure 21.12 User Program Mode Execution Procedure

Note:

When programming and erasing, start the watchdog timer so that measures can be taken to

prevent program runaway, etc. Memory cells may not operate normally if

overprogrammed or overerased due to program runaway.

SH7052 bảng dữ liệu(PDF) 784 Page - Renesas Technology Corp