h8s-2138 Renesas Electronics Corporation., h8s-2138 Datasheet - Page 271

• Manufacturer Part Number: h8s-2138
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Pin
P41/TMO0/RxD2/
IrRxD
P40/TMCI0/TxD2/
IrTxD
Selection Method and Pin Functions
The pin function is switched as shown below according to the combination of
bits OS3 to OS0 in TCSR of TMR0, bit RE in SCR of SCI2 and bit P41DDR.
When this pin is used as the TMO0 output pin, bit RE in SCR of SCI2 must be
cleared to 0.
The pin function is switched as shown below according to the combination of
bit TE in SCR of SCI2 and bit P40DDR.
When an external clock is selected with bits CKS2 to CKS0 in TCR0 of TMR0,
this pin is used as the TMCI0 input pin.
OS3 to OS0
RE
P41DDR
Pin function
TE
P40DDR
Pin function
input pin
P41
input pin
0
P40
0
0
output pin
0
All 0
P41
Rev. 4.00 Jun 06, 2006 page 217 of 1004
1
TMCI0 input pin
output pin
P40
1
RxD2/IrRxD
input pin
—
1
Section 8 I/O Ports
REJ09B0301-0400
TxD2/IrTxD
output pin
output pin
Not all 0
—
1
TMO0
—
0