H8SSLASH2225 datasheet(812/1071 Pages) RENESAS

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Section 20 Flash Memory (F-ZTAT Version)

Rev. 5.00 Aug 08, 2006 page 726 of 982

REJ09B0054-0500

Bit

Bit Name Initial Value R/W

Description

PV1

R/W

Program-Verify

When this bit is set to 1, the flash memory changes to

program-verify mode. When it is cleared to 0, program-

verify mode is cancelled.

[Setting condition]

When FWE = 1 and SWE1 = 1

1E1

R/W

Erase

When this bit is set to 1, and while the SWE1 and ESU1

bits are 1, the flash memory changes to erase mode.

When it is cleared to 0, erase mode is cancelled.

[Setting condition]

When FWE = 1, SWE1 = 1, and ESU1 = 1

R/W

Program

When this bit is set to 1, and while the SWE1 and PSU1

bits are 1, the flash memory changes to program mode.

When it is cleared to 0, program mode is cancelled.

When FWE = 1, SWE1 = 1, and PSU1 = 1

20.5.2

Flash Memory Control Register 2 (FLMCR2)

FLMCR2 is a register that displays the state of flash memory programming/erasing. FLMCR2 is a

read-only register, and should not be written to.

Bit

Bit Name Initial Value R/W

Description

FLER

Indicates that an error has occurred during an operation

on flash memory (programming or erasing). When FLER

is set to 1, flash memory goes to the error-protection

state.

See section 20.9.3, Error Protection, for details.

6 to 0 —

All 0

Reserved

These bits are always read as 0.

20.5.3

Erase Block Register 1 (EBR1)

EBR1 specifies the flash memory erase area block. EBR1 is initialized to H'00 when the SWE1 bit

in FLMCR1 is 0. Do not set more than one bit at a time, as this will cause all the bits in EBR1 and

EBR2 to be automatically cleared to 0.

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