HD6412340 HITACHI [Hitachi Semiconductor], HD6412340 Datasheet - Page 571
HD6412340
Manufacturer Part Number
HD6412340
Description
H8S/2345 F-ZTAT Hardware Manual
Manufacturer
HITACHI [Hitachi Semiconductor]
Datasheet
1.HD6412340.pdf
(907 pages)
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17.6.5
The registers used to control the on-chip flash memory when enabled are shown in table 17.11.
In order for these registers to be accessed, the FLSHE bit must be set to 1 in SYSCR2.
Table 17.11 Flash Memory Registers
Register Name
Flash memory control register 1
Flash memory control register 2
Erase block register 1
Erase block register 2
System control register 2
RAM emulation register
Notes: 1. Lower 16 bits of the address.
2. Flash memory registers share addresses with other registers. Register selection is
3. In modes in which the on-chip flash memory is disabled (modes 4 and 5), a read will
4. When a high level is input to the FWE pin, the initial value is H'80.
5. When a low level is input to the FWE pin, or if a high level is input and the SWE bit in
6. FLMCR1, FLMCR2, EBR1, and EBR2 are 8-bit registers. Only byte accesses are valid
The registers listed in table 7.11 are enabled on the F-ZTAT version only. They do not exist
on the ZTAT, mask ROM, and ROMless versions, so an undefined value will be returned if
they are read, and it is not possible to write to these registers.
Register Configuration
performed by the FLSHE bit in the system control register 2 (SYSCR2).
return H'00, and writes are invalid. Writes are also disabled when the FWE bit is cleared
to 0 in FLMCR1.
FLMCR1 is not set, these registers are initialized to H'00.
for these registers, the access requiring 2 states.
Abbreviation R/W
FLMCR1*
FLMCR2*
EBR1*
EBR2*
SYSCR2
RAMER
6
6
6
6
R/W*
R/W*
R/W*
R/W*
R/W
R/W
3
3
3
3
Initial Value
H'00*
H'00*
H'00*
H'00*
H'00
H'00
4
5
5
5
Address*
H'FFC8*
H'FFC9*
H'FFCA*
H'FFCB*
H'FF42
H'FEDB
2
2
2
2
1
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