H8S2110B RENESAS [Renesas Technology Corp], H8S2110B Datasheet - Page 139

• Manufacturer Part Number: H8S2110B
• Description: Renesas 16-Bit Single-Chip Microcomputer Renesas H8S Family/H8S/2100 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

7.4.5
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 7.4 summarizes the input pull-up MOS states.
Table 7.4
Legend:
Off:
On/Off: On when the pin is in the input state, P3DDR = 0, and P3PCR = 1; otherwise off.
7.5
Port 4 is an 8-bit I/O port. Port 4 pins also function as PWMX output pins, TMR_0 and TMR_1
I/O pins, and the IIC_1 I/O pin. The output type of P42 is NMOS push-pull output. The output
type of SDA1 is NMOS open-drain output. Port 4 has the following registers.
7.5.1
P4DDR specifies input or output for the pins of port 4 on a bit-by-bit basis.
Reset
Off
Bit
7
6
5
4
3
2
1
0
Port 4 data direction register (P4DDR)
Port 4 data register (P4DR)
Input pull-up MOS is always off.
Bit Name
P47DDR
P46DDR
P45DDR
P44DDR
P43DDR
P42DDR
P41DDR
P40DDR
Port 4
Port 4 Data Direction Register (P4DDR)
Port 3 Input Pull-Up MOS
Input Pull-Up MOS States (Port 3)
Initial Value
0
0
0
0
0
0
0
0
Hardware
Standby Mode
Off
R/W
W
W
W
W
W
W
W
W
Description
When a bit in P4DDR is set to 1, the corresponding
pin functions as an output port, and when cleared
to 0, as an input port.
As 14-bit PWM is initialized in software standby
mode, the pin states are determined by the
TMR_0, TMR_1, IIC_1, P4DDR, and P4DR
specifications.
Software
Standby Mode
On/Off
Rev. 2.00 Mar 21, 2006 page 101 of 518
In Other
Operations
On/Off
Section 7 I/O Ports
REJ09B0299-0200