D12320VF25IV Datasheet, PDF (894/1304 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 19 ROM
19.23.2 Flash Memory Control Register 2 (FLMCR2)
Bit
:
7
6
5
4
3
2
1
0
FLER SWE2 ESU2 PSU2 EV2
PV2
E2
P2
Initial value :
0
0
0
0
0
0
0
0
R/W
:R
R/W
R/W
R/W
R/W
R/W
R/W
R/W
FLMCR2 is an 8-bit register used for flash memory operating mode control. Program-verify mode
or erase-verify mode for addresses H'040000 to H'07FFFF is entered by setting SWE2 to 1 when
FWE = 1, then setting the EV2 or PV2 bit. Program mode for addresses H'040000 to H'07FFFF is
entered by setting SWE2 to 1 when FWE = 1, then setting the PSU2 bit, and finally setting the P2
bit. Erase mode for addresses H'040000 to H'07FFFF is entered by setting SWE2 to 1 when FWE
= 1, then setting the ESU2 bit, and finally setting the E2 bit. FLMCR2 is initialized to H'00 by a
reset, and in hardware standby mode and software standby mode. When on-chip flash memory is
disabled, a read will return H'00, and writes are invalid.
Writes to the SWE2 bit in FLMCR2 are valid only when FWE = 1;
writes to the ESU2, PSU2, EV2, and PV2 bits only when FWE = 1 and SWE2 = 1;
writes to the E2 bit only when FWE = 1, SWE2 = 1, and ESU2 = 1;
and writes to the P2 bit only when FWE = 1, SWE2 = 1, and PSU2 = 1.
Bit 7—Flash Memory Error (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.
Bit 7
FLER
0
1
Description
Flash memory is operating normally
Flash memory program/erase protection (error protection) is disabled
[Clearing condition]
Reset or hardware standby mode
An error has occurred during flash memory programming/erasing
Flash memory program/erase protection (error protection) is enabled
[Setting condition]
See section 19.26.3, Error Protection
(Initial value)
Rev.6.00 Sep. 27, 2007 Page 862 of 1268
REJ09B0220-0600