HD6432633 Datasheet, PDF (961/1453 Pages) Renesas Technology Corp – Series of Microcomputers (MCUs: microcomputer units)

22.4.9 Register Configuration
The registers used to control the on-chip flash memory when enabled are shown in table 22-6.
In order to access these registers, the FLSHE bit in SCRX must be set to 1 (except for RAMER
and SCRX).
Table 22-6 Register Configuration
Register Name
Abbreviation R/W
Initial Value Address*¹
Flash memory control register 1
FLMCR1^*5
R/W^*2
H'00^*3
H'FFA8
Flash memory control register 2
FLMCR2^*5
R^*2
H'00
H'FFA9
Erase block register 1
EBR1^*5
R/W^*2
H'00^*4
H'FFAA
Erase block register 2
EBR2^*5
R/W^*2
H'00^*4
H'FFAB
RAM emulation register
RAMER^*5
R/W
H'00
H'FEDB
Flash memory power control register FLPWCR^*5
R/W^*2
H'00^*4
H'FFAC
Serial control register X
SCRX
R/W
H'00
H'FDB4
Notes: *1 Lower 16 bits of the address.
*2 To access these registers, set the FLSHE bit to 1 in serial control register X. Even if
FLSHE is set to 1, if the chip is in a mode in which the on-chip flash memory is
disabled, a read will return H'00 and writes are invalid. Writes are also invalid when the
FWE bit in FLMCR1 is not set to 1.
*3 When a high level is input to the FWE pin, the initial value is H'80.
*4 When a low level is input to the FWE pin, or if a high level is input and the SWE1 bit in
FLMCR1 is not set, these registers are initialized to H'00.
*5 FLMCR1, FLMCR2, EBR1, EBR2, RAMER, and FLPWCR are 8-bit registers.
Use byte access on these registers.
22.5 Register Descriptions
22.5.1 Flash Memory Control Register 1 (FLMCR1)
Bit: 7
6
5
4
3
2
1
0
FWE SWE1 ESU1 PSU1 EV1 PV1
E1
P1
Initial value: —*
0
0
0
0
0
0
0
R/W: R
R/W R/W R/W R/W R/W R/W R/W
Note: * Determined by the state of the FWE pin.
FLMCR1 is an 8-bit register used for flash memory operating mode control. Program-verify mode
or erase-verify mode for addresses H'00000 to H'3FFFF is entered by setting SWE1 bit to 1 when
FWE = 1, then setting the PV1 or EV1 bit. Program mode for addresses H'00000 to H'3FFFF is
entered by setting SWE1 bit to 1 when FWE = 1, then setting the PSU1 bit, and finally setting the
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