H8SSLASH2214 datasheet(623/936 Pages) RENESAS

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Section 15 ROM

Rev.4.00 Sep. 18, 2008 Page 563 of 872

REJ09B0189-0400

15.7.6

Serial Control Register X (SCRX)

Bit:

—

FLSHE

—

Initial value:

R/W:

R/W

SCRX is an 8-bit readable/writable register that performs register access control, and on-chip flash

memory control (including the F-ZTAT version).

SCRX is initialized to H'00 by a reset and in hardware standby mode.

Bits 7 to 4—Reserved: Only 0 should be written to these bits.

Bit 3—Flash Memory Control Register Enable (FLSHE): Controls CPU access to the flash

memory control registers (FLMCR1, FLMCR2, EBR1, and EBR2). Setting the FLSHE bit to 1

enables read/write access to the flash memory control registers. If FLSHE is cleared to 0, the flash

memory control registers are deselected. In this case, the flash memory control register contents

are retained. When the FLSHE bit is set to 1, the flash memory control registers can be read and

written to. When FLSHE is cleared to 0, the flash memory control registers are deselected. In this

case, the contents of the flash memory control registers are retained.

Bit 3

FLSHE

Description

Flash control registers deselected in area H'FFFFA8 to H'FFFFAC

(Initial value)

Flash control registers selected in area H'FFFFA8 to H'FFFFAC

Bits 2 to 0—Reserved: Only 0 should be written to these bits.

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