h8s-2161b Renesas Electronics Corporation., h8s-2161b Datasheet - Page 255

• Manufacturer Part Number: h8s-2161b
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

8.10.2
P9DR stores output data for the port 9 pins.
Note:
8.10.3
Note: When this pin is set as the P97 output pin, it is an NMOS push-pull output. SDA0 is an
Bit
7
6
5
4
3
2
1
0
Operating
Mode
WMS1
ICE
P97DDR
Pin Function
P97/WAIT/SDA0
The pin function is switched as shown below according to the combination of operating mode,
the WMS1 bit in WSCR, the ICE bit in ICCR of IIC_0, and the P97DDR bit.
NMOS open-drain output, and has direct bus drive capability.
* The initial value of bit 6 is determined according to the P96 pin state.
Bit Name
P97DR
P96DR
P95DR
P94DR
P93DR
P92DR
P91DR
P90DR
Port 9 Data Register (P9DR)
Pin Functions
P97 input
pin
0
Initial Value
0
Undefined *
0
0
0
0
0
0
Modes 1, 2, 3 (EXPE = 1)
0
output pin
P97
0
1
R/W
R/W
R
R/W
R/W
R/W
R/W
R/W
R/W
SDA0 I/O
pin
—
1
Description
With the exception of P96, if a port 9 read is
performed while P9DDR bits are set to 1, the
P9DR values are read directly, regardless of the
actual pin states. If a port 9 read is performed
while P9DDR bits are cleared to 0, the pin states
are read.
For P96, the pin state is always read.
WAIT
input
pin
—
—
Rev. 3.00 Mar 21, 2006 page 201 of 788
1
P97 input
pin
0
Modes 2, 3 (EXPE = 0)
0
output pin
Section 8 I/O Ports
P97
REJ09B0300-0300
—
1
SDA0 I/O
pin
—
1