32186 datasheet(157/1032 Pages) RENESAS

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INTERNAL MEMORY

6-15

32185/32186 Group Hardware Manual

Rev.1.10 REJ09B0235-0110 May 15, 07

6.5.1 Flash Mode Register

Flash Mode Register (FMOD)

<Address: H’0080 01E0>

Bit Name

Function

0–2

No function assigned. Fix to "0."

FAENS

0: Flash access disabled

–

Flash access enable status bit

1: Flash access enabled

4–6

No function assigned. Fix to "0."

FPMOD

0: FP pin = "L"

–

External FP pin status bit

1: FP pin = "H"

(1) FAENS (Flash Access Enable Status) bit (Bit 3)

The FAENS bit shows whether access to the flash memory is enabled or disabled. When the flash memory

is reset by the FRESET bit in Flash Control Register 4 (FCNT4) or accessed for programming/erasure, this

bit is cleared to "0," resulting in the flash memory being disabled against access. When the flash memory

becomes ready for access, this bit is set to "1." However, it requires up to 30 µs for FAENS bit to be "1" from

"0" after exiting Flash reset by FRESET bit or executing programming and erasing operation for Flash

memory.

(2) FPMOD (External FP Pin Status) bit (Bit 7)

The FPMOD is a status bit which indicates the FP (Flash Protect) pin status.

The internal flash memory is enabled for programming or erase operation only when FPMOD = "1," and is

protected against programming or erase operation when FPMOD = "0."

123456

FAENS

FPMOD

0001000

6.5 Registers Associated with Internal Flash Memory

32186 Datasheet(PDF) 157 Page - Renesas Technology Corp