32182 datasheet(145/755 Pages) RENESAS

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6-10

INTERNAL MEMORY

32182 Group User’s Manual (Rev.1.0)

6.4 Registers Associated with the Internal Flash Memory

Flash Control Register 3 (FCNT3)

<Address: H’0080 01E4>

123456

FELEVEL

Bit Name

Function

0–6

No function assigned. Fix to "0".

FELEVEL

0: Normal level

Erase margin-up bit

1: Raise erase margin up

Flash Control Register 3 (FCNT3) controls the depth of erase levels when erasing the internal flash memory with one

of erase commands. The internal flash memory erase level can be deepened by setting the FELEVEL bit to "1".

Flash Control Register 4 (FCNT4)

<Address: H’0080 01E5>

1011121314

b15

FRESET

Bit Name

Function

8–14

No function assigned. Fix to "0".

FRESET

0: No operation

Flash reset bit

1: Reset

Flash Control Register 4 (FCNT4) controls initializing each status bit of Flash Status Register 2 (FSTAT2) or

canceling a programming/erase operation.

Setting the FRESET bit to "1" initializes each status bit of the FSTAT2 register or cancels a programming/erase

operation.

The FRESET bit is effective only when the FENTRY bit = "1". If the FENTRY bit = "0", the FRESET bit informa-

tion is ignored.

When programming or easing the internal flash memory, make sure the FRESET bit remains "0".

An example for clearing each status of FSTAT2 during a programming/erase operation, and an example for

forcibly terminating (canceling) a programming/erase operation due to time-out are shown below.

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