350
10.3.3
Pin Functions
The port 3 pins double as SCI I/O input pins (TxD0, RxD0, SCK0, TxD1, RxD1, and SCK1). The
functions of port 3 pins are shown in Table 10-5.
Table 10-5 Port 3 Pin Functions
Pin
Selection Method and Pin Functions
P37/TxD4
Switches as follows according to combinations of SCR TE bit of SCI4 and the
P37DDR bit.
TE
0
1
P37DDR
0
1
—
Pin function
P37 input pin
P37 output pin
*
TxD4 output pin
Note:
*
When P37ODR = 1, it becomes NMOS open drain output.
P36/RxD4
Switches as follows according to combinations of SCR RE bit of SCI4 and the
P36DDR bit.
RE
0
1
P36DDR
0
1
—
Pin function
P36 input pin
P36 output pin
*
RxD4 input pin
Note:
*
When P36ODR = 1, it becomes NMOS open drain output.
P35/SCK1/
SCK4/SCL0/
IRQ5
Switches as follows according to combinations of ICCR0 ICE bit of IIC0, SMR C/
A
bit of SCI1 or SCI4, SCR CKE0 and CKE1 bits, and the P35DDR bit.
When used as a SCL0 I/O pin, always be sure to clear the following bits to 0: SMR
C/
A
bits of SCI1 or SCI4, and SCR CKE0 and CKE1 bits. Do not set SCK1 and
SCK4 to simultaneous output.
The SCL0 output format is NMOS open drain output, enabling direct bus driving.
ICE
0
1
CKE1
0
1
0
C/
A
0
1
—
0
CKE0
0
1
—
—
0
P35DDR
0
1
—
—
—
—
Pin function
P35
input pin
P35
output pin
*
SCK1/
SCK4
output pin
*
SCK1/
SCK4
output pin
*
SCK1/
SCK4
input pin
SCL0
I/O pin
IRQ5
input
Note:
*
Output type is NMOS push-pull. When P35ODR = 1, it becomes NMOS
open drain output.
Содержание H8S/2631
Страница 28: ...xviii Appendix G Package Dimensions 1154 ...
Страница 341: ...316 Transfer SAR or DAR DAR or SAR Block area First block Nth block Figure 9 8 Memory Mapping in Block Transfer Mode ...
Страница 918: ...905 ø DREQ0 DREQ1 tDRQS tDRQH Figure 25 19 DMAC DREQ Input Timing ...
Страница 955: ...943 A 2 Instruction Codes Table A 2 shows the instruction codes ...