HD6432621 Hitachi, HD6432621 Datasheet - Page 123

• Manufacturer Part Number: HD6432621
• Description: (HD64F262x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

3.4
The pin functions of ports 1 and A to F vary depending on the operating mode. Table 3-3 shows
their functions in each operating mode.
Table 3-3
Port
Port 1
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
An address map of the H8S/2623 and H8S/2626 is shown in figure 3-1, and an address map of the
H8S/2622, and H8S/2625 in figure 3-2, and an address map of the H8S/2621 and H8S/2624 in
figure 3-3.
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
P10
P11 to P13
PA4 to PA0
PF7
PF6 to PF4
PF3
PF2 to PF0
Mode 4
A
P*/A
A
A
A
D
P/D*
P/C*
C
P/C*
P*/C
Mode 5
A
P*/A
A
A
A
D
P*/D
P/C*
C
P*/C
P*/C
Mode 6
P*/A
P*/A
P*/A
P*/A
P*/A
D
P*/D
P/C*
C
P*/C
P*/C
Mode 7
P
P
P
P
P
P
P
P*/C
P
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