Pin Functions In Each Operating Mode; Address Map In Each Operating Mode - Hitachi H8S/2646 Hardware Manual

3.4

Pin Functions in Each Operating Mode

The pin functions of ports A to F 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 A
Port B
Port C
Port D
Port E
Port F PF7
PF6 to PF4
PF3
PF2
Legend
P: I/O port
A: Address bus output
D: Data bus I/O
C: Control signals, clock I/O
*: After reset
3.5

Address Map in Each Operating Mode

A address maps of the H8S/2646 Series are shown in figures 3-1 (1) and 3-1 (2).
The address space is 16 Mbytes in modes 4 to 7 (advanced modes).
The address space is divided into eight areas for modes 4 to 7. For details, see section 7, Bus
Controller.
Mode 4 Mode 5
A A
A A
A A
D D
P/D* P*/D
P/C* P/C*
C C
P/C* P*/C
P*/C P*/C
Mode 6 Mode 7
P*/A P
P*/A P
P*/A P
D P
P*/D P
P/C* P*/C
C P
P*/C
P*/C
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