h8s-2158 Renesas Electronics Corporation., h8s-2158 Datasheet - Page 274

• Manufacturer Part Number: h8s-2158
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 9 I/O Ports
9.3.5
Port 3 has a built-in input pull-up MOS that can be controlled by software. This input pull-up
MOS can be used in single-chip mode. Table 9.4 summarizes the input pull-up MOS states.
Table 9.4
Legend:
Off:
On/Off: On when input state and P3PCR = 1; otherwise off.
9.4
Port 4 is an 8-bit I/O port. Port 4 pins also function as interrupt input pins, TMR_0, TMR_1,
TMR_X, and TMR_Y input/output pins, timer connection input/output pins, and MCIF
input/output pins. Port 4 has the following registers.
Rev. 3.00 Jan 25, 2006 page 222 of 872
REJ09B0286-0300
Mode
Extended mode
(EXPE = 1)
Single-chip mode
(EXPE = 0)
Port 4 data direction register (P4DDR)
Port 4 data register (P4DR)
Always off.
Port 3 Input Pull-Up MOS
Port 4
Port 3 Input Pull-Up MOS States
Reset
Off
Off
Hardware
Standby Mode
Off
Off
Software
Standby Mode
Off
On/Off
In Other
Operations
Off
On/Off