SH7018 datasheet(336/431 Pages) RENESAS

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SH7018 Datasheet(PDF) 336 Page - Renesas Technology Corp

Part #	SH7018

Description	SuperH??RISC engine

PDF	431 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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336 / 431 page

320

16.2.4

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

SCI1

Overlap RAM

(emulation is performed

on data written in RAM)

Figure 16.5 RAM Emulation (RAM Overlap)

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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