32182 datasheet(166/755 Pages) RENESAS

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6-31

INTERNAL MEMORY

32182 Group User’s Manual (Rev.1.0)

6.6 Virtual Flash Emulation Function

The microcomputer has the function to map 4-Kbyte memory blocks beginning with the address H’0080 8000 into

areas (S banks) of the internal flash memory that are divided in 4-Kbyte units. This functions is referred to as the

Virtual Flash Emulation Function.

This function allows the data located in 4-Kbyte blocks of the internal RAM to be changed with the contents of

internal flash memory at the addresses specified by the Virtual Flash S Bank Register. That way, the relevant RAM

data can read out by reading the content of internal flash memory.

For applications that require modifying the contents of internal flash memory (e.g., data table) during operation,

this function enables dynamic data modification by modifying the relevant RAM data.

The RAM blocks allocated for virtual flash emulation can be accessed for read and write the same way as in usual RAM.

This function, when used in combination with the microcomputer’s internal Real-Time Debugger (RTD), allows the

data table, etc. created in the internal flash memory to be referenced or rewritten from the outside, thereby facili-

tating data table tuning from an external device.

Note: • Before programming/erasing the internal flash memory, always be sure to exit this virtual flash

emulation mode.

Figure 6.6.1 Internal RAM Bank Configuration of the M32182F3

6.6 Virtual Flash Emulation Function

H'0080 4000

H'0080 8000

H'0080 9000

H'0080 A000

H'0080 B000

H'0080 C000

H'0080 D000

H'0080 E000

H'0080 F000

RAM bank block 0

(FESBANK0)

4 Kbytes

RAM bank block 1

(FESBANK1)

4 Kbytes

RAM bank block 2

(FESBANK2)

4 Kbytes

RAM bank block 3

(FESBANK3)

4 Kbytes

RAM bank block 4

(FESBANK4)

4 Kbytes

RAM bank block 5

(FESBANK5)

4 Kbytes

RAM bank block 6

(FESBANK6)

4 Kbytes

RAM bank block 7

(FESBANK7)

4 Kbytes

(Cannot be used for

virtual flash emulation)

Internal RAM area

(Cannot be used for

virtual flash emulation)

H'0081 0000

H'0081 3FFF

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