Datasheet

Section 10 I/O Ports
REJ09B0465-0300 Rev. 3.00 Page 271 of 982
Sep 17, 2010
H8S/20103, H8S/20203, H8S/20223, H8S/20115, H8S/20215, H8S/20235 Group
Section 10 I/O Ports
The H8S/20103 and H8S/20115 Groups have fifty-five general I/O ports, and the H8S/20223,
H8S/20203, H8S/20215, and H8S/20235 Groups each have sixty-nine general I/O ports. The
general I/O ports are divided into three groups: the digital I/O ports that can also be used as I/O
pins of the on-chip peripheral modules or external interrupt input pins, the ports that can also be
used as analog input ports, and the ports that can also be used as external oscillation pins.
Although all the ports are set as general input ports immediately after a reset, the pin functions can
be selected by setting the appropriate register.
Pin functions of the digital I/O ports are selected by the peripheral function mapping controller
(PMC). For details, see section 9, Peripheral I/O Mapping Controller. All pins of general I/O ports
can be set as high-power ports. For the permissible total output current, see section 28, Electrical
Characteristics.
10.1 Port 1
Figure 10.1 shows the pin configuration of port 1.
Port 1
P17/IRQ7
P16/IRQ6
P15/IRQ5
P14/IRQ4
P13/IRQ3
P12/IRQ2
P11/IRQ1
P10/IRQ0
Port 1
P17/IRQ7
P16/IRQ6
P15/IRQ5
P13/IRQ3
P12/IRQ2
P11/IRQ1
Note: Only the functions initially selected by PMCR are shown following the port pin names.
H8S/20203 Group
H8S/20223 Group
H8S/20215 Group
H8S/20235 Group
H8S/20103 Group
H8S/20115 Group
Figure 10.1 Port 1 Pin Configuration