D12320VF25IV Datasheet, PDF (895/1304 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 19 ROM
Bit 6—Software Write Enable Bit 2 (SWE2): Enables or disables flash memory programming
and erasing for addresses H'040000 to H'07FFFF. This bit should be set when setting bits 5 to 0 in
FLMCR2, and EBR2 bits 7 to 4.
When SWE2 = 1, the flash memory can only be read in program-verify or erase-verify mode.
Bit 6
SWE2
0
1
Description
Writes disabled
Writes enabled
[Setting condition]
When FWE = 1
(Initial value)
Bit 5—Erase Setup Bit 2 (ESU2): Prepares for a transition to erase mode for addresses H'040000
to H'07FFFF. Do not set the SWE2, PSU2, EV2, PV2, E2, or P2 bit at the same time.
Bit 5
ESU2
0
1
Description
Erase setup cleared
Erase setup
[Setting condition]
When FWE = 1, SWE2 = 1
(Initial value)
Bit 4—Program Setup Bit 2 (PSU2): Prepares for a transition to program mode for addresses
H'040000 to H'07FFFF. Do not set the SWE2, ESU2, EV2, PV2, E2, or P2 bit at the same time.
Bit 4
PSU2
0
1
Description
Program setup cleared
Program setup
[Setting condition]
When FWE = 1, SWE2 = 1
(Initial value)
Rev.6.00 Sep. 27, 2007 Page 863 of 1268
REJ09B0220-0600