373
6.15
ROM
6.15.1
Features
•
Connected to the bus master by a 16-bit data bus, enabling one-state access to both byte data
and word data
•
The flash memory version (F-ZTAT) can be erased and programmed on-board as well as with
a PROM programmer
•
The H8S/2678 has 512 kbytes, the H8S/2676 256 kbytes, and the H8S/2675 128 kbytes, of on-
chip mask ROM
6.15.2
Block Diagrams
Internal data bus (upper 8 bits)
Internal data bus (lower 8 bits)
H'000000
H'000002
H'07FFFE
H'000001
H'000003
H'07FFFF
Figure 6.15 Block Diagram of Mask ROM (256 kbytes)
Содержание H8S/2670
Страница 5: ......
Страница 9: ......
Страница 199: ...182 ...
Страница 361: ...344 ...
Страница 393: ...376 ...
Страница 647: ...630 ...