Pin Functions - Renesas H8S Series Hardware Manual

9.6.3

Pin Functions

Port 5 pins also function as SCI I/O pins (TxD2, RxD2, and SCK2), and the A/D converter input pin (ADTRG). Port 5 pin
functions are shown in table 9-10.
Table 9-10 Port 5 Pin Functions
Pin
P5 /ADTRG
3
P5 /SCK2
2
P5 /RxD2
1
P5 /TxD2
0
Rev.6.00 Oct.28.2004 page 296 of 1016
REJ09B0138-0600H
Selection Method and Pin Functions
The pin function is switched as shown below according to the combination of
bits TRGS1 and TRGS0 in the A/D converter ADCR, and bit P53DDR.
P53DDR
Pin function
Note: * ADTRG input when TRGS0 = TRGS1 = 1.
The pin function is switched as shown below according to the combination of
bit C/A in the SCI2 SMR, bits CKE0 and CKE1 in SCR, and bit P52DDR.
CKE1
C/A
CKE0
P52DDR 0
Pin function P5
2
input pin
The pin function is switched as shown below according to the combination of
bit RE in the SCI2 SCR, and bit P51DDR.
RE
P51DDR
Pin function P5
1
The pin function is switched as shown below according to the combination of
bit TE in the SCI2 SCR, and bit P50DDR.
TE
P50DDR
Pin function P5
0
0
P5 input pin
3
ADTRG input pin*
0
0
0 1
1 —
P5 SCK2
2
output pin output pin
0
0 1
input pin P5 output pin
1
0
0 1
input pin P5 output pin
0
1
P5 output pin
3
1
1 —
— —
— —
SCK2 SCK2
output pin input pin
1
—
RxD2 input pin
1
—
TxD2 output pin