p2125vps20 Renesas Electronics Corporation., p2125vps20 Datasheet - Page 101

• Manufacturer Part Number: p2125vps20
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

3.4
The pin functions of ports 1 to 4 vary depending on the operating mode. Table 3.2 shows their
functions in each operating mode.
Table 3.2
[Legend]
P:
A:
D:
C:
*:
Port
Port 1
Port 2
Port 3
Port 4
I/O port
Address bus output
Data bus I/O
Control signals, clock I/O
After a reset
Pin Functions in Each Operating Mode
P47
P46
P45 to P43
P42 to P40
Pin Functions in Each Mode
Mode 1
D
C*/P
A
A
P*/C
C
P
Mode 2
P*/A
P*/A
P*/D
P*/C
P*/C
P*/C
P
Rev. 1.00 Sep. 21, 2006 Page 63 of 658
Section 3 MCU Operating Modes
Mode 3
P*/A
P*/A
P*/D
P*/C
P*/C
P*/C
P
REJ09B0310-0100