HD64F2149YV datasheet(727/1075 Pages) RENESAS

727 / 1075 page

Section 22 ROM

Rev. 3.00 Jan 18, 2006 page 699 of 1044

REJ09B0280-0300

Bit 1—Erase (E): Selects erase mode transition or clearing. Do not set the SWE, ESU, PSU, EV,

PV, or P bit at the same time.

Bit 1

Description

Erase mode cleared

(Initial value)

Transition to erase mode

[Setting condition]

When SWE = 1, and ESU = 1

Bit 0—Program (P): Selects program mode transition or clearing. Do not set the SWE, PSU,

ESU, EV, PV, or E bit at the same time.

Bit 0

Description

Program mode cleared

(Initial value)

Transition to program mode

[Setting condition]

When SWE = 1, and PSU = 1

22.5.2

Flash Memory Control Register 2 (FLMCR2)

Bit

76543210

FLER

—————

ESU

PSU

Initial value

00000000

Read/Write

—————

R/W

FLMCR2 is an 8-bit register that monitors the presence or absence of flash memory program/erase

protection (error protection) and performs setup for flash memory program/erase mode. FLMCR2

is initialized to H'00 by a reset, and in hardware standby mode. The ESU and PSU bits are cleared

to 0 in software standby mode, subactive mode, subsleep mode, and watch mode.

When on-chip flash memory is disabled, a read will return H'00 and writes are invalid.

HD64F2149YV Datasheet(PDF) 727 Page - Renesas Technology Corp