HD64F2149 Datasheet, PDF (117/1035 Pages) Renesas Technology Corp – Hitachi 16-Bit Single-Chip Microcomputer

3.4 Pin Functions in Each Operating Mode
The pin functions of ports 1 to 3, 9, A, and B vary depending on the operating mode. Table 3.3
shows their functions in each operating mode.
Table 3.3 Pin Functions in Each Mode
Port
Port 1
Port 2
Port A
Port 3
Port B
Port 9 P97
P96
P95 to P93
P92 to P91
P90
Port C to Port G
Legend:
P: I/O port
A: Address bus output
D: Data bus I/O
C: Control signals, clock I/O
*: After reset
Mode 1
A
A
P
D
P*/D
P*/C
C */P
C
P
P*/C
P
Mode 2
P*/A
P*/A
P*/A
P*/D
P*/D
P*/C
P*/C
P*/C
P
P*/C
P
Mode 3
P*/A
P*/A
P
P*/D
P*/D
P*/C
P*/C
P*/C
P
P*/C
P
3.5 Memory Map in Each Operating Mode
Figure 3.1 shows memory maps for each of the operating modes.
The address space is 64 kbytes in modes 1 and 3 (normal modes), and 16 Mbytes in mode 2
(advanced mode).
The on-chip ROM capacity is 64 kbytes, but only 56 kbytes are available in mode 3 (normal
mode).
Do not access reserved area.
For details, see section 6, Bus Controller.
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