SH7052 datasheet(718/919 Pages) RENESAS

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SH7052 Datasheet(PDF) 718 Page - Renesas Technology Corp

Part #	SH7052

Description	SuperHTM RISC engine

PDF	919 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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718 / 919 page

692

20.2.4

Flash Memory Emulation in RAM

Emulation should be performed in user mode or user program mode. When the emulation block

set in RAMER is accessed while the emulation function is being executed, data written in the

overlap RAM is read.

User Mode

• User Program Mode

Application program

Execution state

Flash memory

Emulation block

RAM

SCI

Overlap RAM

(emulation is performed

on data written in RAM)

Figure 20.5 Emulation

When overlap RAM data is confirmed, the RAMS bit is cleared, RAM overlap is released, and

writes should actually be performed to the flash memory.

When the programming control program is transferred to RAM, ensure that the transfer

destination and the overlap RAM do not overlap, as this will cause data in the overlap RAM to

be rewritten.

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