p2125vps20 Renesas Electronics Corporation., p2125vps20 Datasheet - Page 208

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

Section 8 I/O Ports
• P46/φ/EXCL
Note: When this pin is used as the EXCL input pin, P46DDR should be cleared to 0.
• P45/AS/IOS
• P44/WR
• P43/RD
Rev. 1.00 Sep. 21, 2006 Page 170 of 658
REJ09B0310-0100
P46DDR
EXCLE
Pin Function
Operating Mode
P45DDR
IOSE
Pin Function
Operating Mode Modes 1, 2, 3 (EXPE = 1)
P44DDR
Pin Function
Operating Mode Modes 1, 2, 3 (EXPE = 1)
P43DDR
Pin Function
The pin function is switched as shown below according to the combination of the EXCLE bit
in LPWRCR and the P46DDR bit.
The pin function is switched as shown below according to the combination of operating mode,
the IOSE bit in SYSCR and the P45DDR bit.
The pin function is switched as shown below according to the combination of operating mode
and the P44DDR bit.
The pin function is switched as shown below according to the combination of operating mode
and the P43DDR bit.
AS output pin
WR output pin
RD output pin
P46 input pin
Modes 1, 2, 3 (EXPE = 1)
0
—
—
0
—
IOS output pin
0
1
EXCL input pin
P44 input pin
P43 input pin
1
0
0
Modes 2, 3 (EXPE = 0)
Modes 2, 3 (EXPE = 0)
P45 input pin
Modes 2, 3 (EXPE = 0)
—
0
P44 output pin
P43 output pin
φ output pin
P45 output pin
1
0
1
1
—
1