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18.1
Overview
The H8/3064F-ZTAT has 256 kbytes of on-chip flash memory. The flash memory is connected to
the CPU by a 16-bit data bus. The CPU accesses both byte data and word data in two states,
enabling rapid data transfer.
The on-chip ROM is enabled and disabled by setting the mode pins (MD
table 18.1.
The on-chip flash memory product (H8/3064F-ZTAT) can be erased and programmed on-board,
as well as with a special-purpose PROM programmer.
Table 18.1 Operating Modes and ROM
Mode
Mode 1 (expanded 1-Mbyte mode with on-chip ROM
disabled)
Mode 2 (expanded 1-Mbyte mode with on-chip ROM
disabled)
Mode 3 (expanded 16-Mbyte mode with on-chip ROM
disabled)
Mode 4 (expanded 16-Mbyte mode with on-chip ROM
disabled)
Mode 5 (expanded 16-Mbyte mode with on-chip ROM
enabled)
Mode 6 (single-chip normal mode)
Mode 7 (single-chip advanced mode)
Section 18 Flash Memory
[H8/3064F-ZTAT]
to MD
2
Mode Pins
MD2
MD1
MD0
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
) as shown in
0
On-Chip ROM
Disabled (external
address area)
Enabled
519
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