HD6432646 Hitachi, HD6432646 Datasheet - Page 119

• Manufacturer Part Number: HD6432646
• Description: (HD64F264x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

3.4
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
Port
Port A
Port B
Port C
Port D
Port E
Port F
Legend
P: I/O port
A: Address bus output
D: Data bus I/O
C: Control signals, clock I/O
*: After reset
3.5
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.
Pin Functions in Each Operating Mode
Address Map in Each Operating Mode
Pin Functions in Each Mode
PF7
PF6 to PF4
PF3
PF2
Mode 4
A
A
A
D
P/D*
P/C*
C
P/C*
P*/C
Mode 5
A
A
A
D
P*/D
P/C*
C
P*/C
P*/C
Mode 6
P*/A
P*/A
P*/A
D
P*/D
P/C*
C
P*/C
P*/C
Mode 7
P
P
P
P
P
P*/C
P
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