h8s-2646 Renesas Electronics Corporation., h8s-2646 Datasheet - Page 273
h8s-2646
Manufacturer Part Number
h8s-2646
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2646.pdf
(1165 pages)
- Current page: 273 of 1165
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9.4.3
The port 3 pins also function as SCI I/O input pins (TxD0, RxD0, SCK0, TxD1, RxD1, and
SCK1) and as external interrupt input pins (IRQ4 and IRQ5). The functions of port 3 pins are
shown in table 9.7.
Table 9.7
Pin
P37
P36
P35/SCK1/
IRQ5
P34/RxD1
Pin Functions
Port 3 Pin Functions
Selection Method and Pin Functions
Switches as follows according to the setting of the P37DDR bit.
Note: * When P37ODR = 1, it becomes NMOS open drain output.
Switches as follows according to the setting of the P36DDR bit.
Note: * When P36ODR = 1, it becomes NMOS open drain output.
Switches as follows according to the combinations of the C/A bit of SMR1, the
CKE0 and CKE1 bits of SCR, and the P35DDR bit.
Note: * When P35ODR = 1, it becomes NMOS open drain output.
Switches as follows according to combinations of bit RE of SCR1 and bit P34DDR.
Note: * When P34ODR = 1, it becomes NMOS open drain tray.
P37DDR
Pin function
P36DDR
Pin function
CKE1
C/A
CKE0
P35DDR
Pin function
RE
P34DDR
Pin function
input pin
P35
P34 input pin
0
P37 input pin
P36 input pin
0
0
output pin *
0
0
P35
0
1
0
Rev. 5.00 Sep 22, 2005 page 247 of 1136
P34 output pin *
0
IRQ5 input
output pin *
SCK1
—
1
1
output pin *
P37 output pin *
P36 output pin *
SCK1
—
—
1
Section 9 I/O Ports
RxD1 input pin
REJ09B0257-0500
1
1
—
1
input pin
SCK1
—
—
—
1
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