h8s-2161b Renesas Electronics Corporation., h8s-2161b Datasheet - Page 239

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

Note:
Note: When this pin is used as the TMO0 output pin, bit RE in SCR of SCI_2 must be cleared to
ICE
CKE1
C/A
CKE0
P42DDR
Pin Function
OS3 to OS0
RE
P41DDR
Pin Function
P42/TMRI0/SCK2/SDA1
The pin function is switched as shown below according to the combination of the ICE bit in
ICCR of IIC1, the CKE1 and CKE0 bits in SCR of SCI_2, the C/A bit in SMR of SCI_2, and
the P42DDR bit.
P41/TMO0/RxD2/IrRxD
The pin function is switched as shown below according to the combination of the OS3 to OS0
bits in TCSR of TMR0, the RE bit in SCR of SCI_2 and the P41DDR bit.
0.
* When this pin is used as the SDA1 I/O pin, bits CKE1 and CKE0 in SCR of SCI_2 and
bit C/A in SMR of SCI_2 must all be cleared to 0. SDA1 is an NMOS-only output, and
has direct bus drive capability.
When bits CCLR1 and CCLR0 in TCR0 of TMR_0 are set to 1, this pin is used as the
TMRI0 input pin.
When the P42 output pin and SCK2 output pin are set, the output type is NMOS push-
pull output.
P42 input
pin
0
input pin
P41
0
0
P42 output
pin
0
1
0
0
output pin
output pin
P41
All 0
SCK2
1
TMRI0 input pin *
—
0
1
Rev. 3.00 Mar 21, 2006 page 185 of 788
output pin
SCK2
RxD2/IrRxD
—
—
1
input pin
—
1
SCK2 input
pin
—
—
—
1
Section 8 I/O Ports
REJ09B0300-0300
output pin
Not all 0
TMO0
—
0
I/O pin
SDA1
—
1
0
0
0