p2125vps20 Renesas Electronics Corporation., p2125vps20 Datasheet - Page 202

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

Section 8 I/O Ports
8.3.4
• P37/D7, P36/D6, P35/D5, P34/D4, P33/D3, P32/D2, P31/D1, P30/D0
Note: n = 7 to 0
8.3.5
Port 3 has an on-chip input pull-up MOS function that can be controlled by software. This input
pull-up MOS function can be specified as on or off on a bit-by-bit basis.
Table 8.4 summarizes the input pull-up MOS states.
Table 8.4
[Legend]
Off:
On/Off: On when the pin is in the input state, P3DDR = 0, and P3PCR = 1; otherwise off.
Rev. 1.00 Sep. 21, 2006 Page 164 of 658
REJ09B0310-0100
Operating Mode Mode 1, 2, 3 (EXPE = 1)
P3nDDR
Pin Function
Mode
1, 2, 3 (EXPE = 1)
2, 3 (EXPE = 0)
The pin function is switched as shown below according to the combination of the P3nDDR bit
and operating mode.
Input pull-up MOS is always off.
Pin Functions
Port 3 Input Pull-Up MOS
Input Pull-Up MOS States (Port 3)
D7 to D0 input/output pins
Reset
Off
—
Hardware
Standby Mode
Off
P37 to P30 input pins
0
Software
Standby Mode
Off
On/Off
Mode 2, 3 (EXPE = 0)
P37 to P30 output pins
In Other
Operations
Off
On/Off
1