HD6412340 HITACHI [Hitachi Semiconductor], HD6412340 Datasheet - Page 564

• Manufacturer Part Number: HD6412340
• Description: H8S/2345 F-ZTAT Hardware Manual
• Manufacturer: HITACHI [Hitachi Semiconductor]

17.6.2
552
Legend:
SYSCR2: System control register 2
FLMCR1: Flash memory control register 1
FLMCR2: Flash memory control register 2
EBR1:
EBR2:
RAMER:
Notes: 1. Functions as FWE pin on F-ZTAT version. Functions as WDTOVF pin on ZTAT,
Writer mode
Flash memory can be programmed/erased in writer mode, using a PROM programmer, as well
as in on-board programming mode.
2. The flash memory control registers (SYSCR2, FLMCR1, FLMCR2, EBR1, EBR2,
Block Diagram
Erase block register 1
Erase block register 2
RAM emulation register
mask ROM, and ROMless versions.
RAMER) 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.
SYSCR2
FLMCR1
FLMCR2
RAMER
EBR1
EBR2
Internal data bus (upper 8 bits)
Internal data bus (lower 8 bits)
Figure 17.7 Block Diagram of Flash Memory
*2
*2
*2
addresses
Bus interface/controller
H'01FFFC H'01FFFD
H'01FFFE H'01FFFF
*2
H'000000 H'000001
H'000002 H'000003
Even
Flash memory
(128 kbytes)
*2
*2
addresses
Odd
Operating
mode
FWE pin
Mode pins
(MD
2
to MD
*1
0
)