h8s-2111b Renesas Electronics Corporation., h8s-2111b Datasheet - Page 136

• Manufacturer Part Number: h8s-2111b
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family / H8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

7.1.5
Port 1 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 7.2 summarizes the input pull-up MOS states.
Table 7.2
[Legend]
Off:
On/Off: On when the pin is in the input state, P1DDR = 0, and P1PCR = 1: otherwise off.
7.2
Port 2 is an 8-bit I/O port. Port 2 has an on-chip input pull-up MOS function that can be controlled
by software. Port 2 has the following registers.
• Port 2 data direction register (P2DDR)
• Port 2 data register (P2DR)
• Port 2 pull-up MOS control register (P2PCR)
7.2.1
P2DDR specifies input or output for the pins of port 2 on a bit-by-bit basis.
Rev. 1.00, 05/04, page 102 of 544
Reset
Off
Bit
7
6
5
4
3
2
1
0
Port 1 Input Pull-Up MOS
Input pull-up MOS is always off.
Bit Name
P27DDR
P26DDR
P25DDR
P24DDR
P23DDR
P22DDR
P21DDR
P20DDR
Port 2
Port 2 Data Direction Register (P2DDR)
Input Pull-Up MOS States (Port 1)
Hardware Standby Mode
Off
Initial
Value
0
0
0
0
0
0
0
0
R/W
W
W
W
W
W
W
W
W
Description
The corresponding port 2 pins are output ports when
P2DDR bits are set to 1, and input ports when P2DDR
bits are cleared to 0.
Software Standby Mode In Other Operations
On/Off
On/Off