32182 datasheet(153/755 Pages) RENESAS

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6-18

INTERNAL MEMORY

32182 Group User’s Manual (Rev.1.0)

6.5.2 Controlling Operation Modes during Flash Programming

The microcomputer’s operation mode is set by MOD0, MOD1 and Flash Control Register 1 (FCNT1) FENTRY

bit. The table below lists operation modes that may be used when programming or erasing the internal flash

memory.

Table 6.5.1 Operation Modes Set during Flash Programming/Erase

MOD0 MOD1 FENTRY (Note 1) Operation Mode

Reset Vector Entry

EI Vector Entry

Single-chip mode

Start address of internal

Flash area

flash memory

(H'0000 0080)

(H'0000 0000)

Processor mode

Start address of external

External area

area

(H'0000 0000)

(H'0000 0080)

External extension

Start address of internal

Flash area

mode

flash memory

(H'0000 0080)

(H'0000 0000)

Single-chip mode

Start address of internal

Beginning of internal RAM

+ flash E/W enable

flash memory

(H'0080 4000)

(H'0000 0000)

Boot mode

Boot program starts

Flash area

running

(H'0000 0080)

Boot mode + flash

Boot program starts

Beginning of internal RAM

E/W enable

running

(H'0080 4000)

External extension

Start address of internal

Beginning of internal RAM

mode + flash E/W

flash memory

(H'0080 4000)

enable

(H'0000 0000)

–

Use inhibited

–

Note 1: Indicates the Flash Control Register 1 (FCNT1) FENTRY bit status (– denotes “Don’t care”). However, if FP = "0",

writing "1" to FENTRY only results in it cleared to "0".

(1) Flash E/W enable mode

Flash E/W enable mode is a mode in which the internal flash memory can be programmed or erased. In flash

E/W enable mode, no programs can be executed in the internal flash memory. Therefore, the necessary

program must be transferred into the internal RAM before entering flash E/W enable mode, so that it can be

executed in the RAM.

(2) Entering flash E/W enable mode

Flash E/W enable mode can only be entered when operating in single-chip, external extension or boot mode.

Furthermore, it is only when the FP pin = "high" and the Flash Control Register 1 (FCNT1) FENTRY bit = "1"

that flash E/W enable mode can be entered. Flash E/W enable mode cannot be entered when operating in

processor mode or the FP pin = "low".

6.5 Programming the Internal Flash Memory

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