HD6412350 Hitachi, HD6412350 Datasheet - Page 95

• Manufacturer Part Number: HD6412350
• Description: (HD6412350 / HD6432351) 16-BIT MICROCONTROLLER
• Manufacturer: Hitachi

3.4
The pin functions of ports A to F vary depending on the operating mode. Table 3-4 shows their
functions in each operating mode.
Table 3-4
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
*1: After reset
*2: Only applies to the H8S/2351
3.5
Figure 3-1 shows a memory map for each of the operating modes.
The address space is 64 kbytes in modes 1 to 3 (normal modes), and 16 Mbytes in modes 4 to 7
(advanced modes).
The H8S/2351’s on-chip ROM contains 64 kbytes, but only 56 kbytes are available in modes 2
and 3 (normal modes).
The address space is divided into eight areas for modes 4 to 7. For details, see section 6, Bus
Controller.
PA
PA
PF
PF
PF
Pin Functions in Each Operating Mode
Memory Map in Each Operating Mode
7
4
7
6
2
to PA
to PA
to PF
to PF
Pin Functions in Each Mode
3
0
5
0
Mode 1
P
A
A
D
P*
P/C*
C
P*
1
1
/D
/C
1
P*
P/C*
P*
Mode 2*
P
P*
P*
D
C
1
1
1
1
/A
/A
/D
/C
1
2
Mode 3*
P
P
P
P
P
P*
P
1
/C
2
Mode 4
P*
A
A
A
D
P/D*
P/C*
C
P*
1
1
/A
/C
1
1
Mode 5
P*
A
A
A
D
P*
P/C*
C
P*
1
1
1
/A
/D
/C
1
Mode 6*
P*
P*
P*
D
P*
P/C*
C
P*
1
1
1
1
1
/A
/A
/A
/D
/C
1
2
Mode 7*
P
P
P
P
P
P*
P
1
/C
75
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