Datasheet

Section 8 I/O Ports
Rev.7.00 Dec. 24, 2008 Page 270 of 698
REJ09B0074-0700
8.12.4 Pin Functions
Pin Functions of H8S/2218 Group
Port G pins also function as external interrupt input (IRQ7) pins and bus control signal output
(CS0 to CS3) pins. The correspondence between the register specification and the pin functions is
shown below.
Table 8.92 PG4 Pin Function
Operating Mode Modes 4 to 6 Mode 7
PG4DDR 0 1 0 1
Pin Function PG4 input pin CS0 output pin PG4 input pin PG4 output pin
Table 8.93 PG3 Pin Function
Operating Mode Modes 4 to 6 Mode 7
PG3DDR 0 1 0 1
Pin Function PG3 input pin CS1 output pin PG3 input pin PG3 output pin
Table 8.94 PG2 Pin Function
Operating Mode Modes 4 to 6 Mode 7
PG2DDR 0 1 0 1
Pin Function PG2 input pin CS2 output pin PG2 input pin PG2 output pin
Table 8.95 PG1 Pin Function
Operating Mode Modes 4 to 6 Mode 7
PG1DDR 0 1 0 1
PG1 input pin CS3 output pin PG1 input pin PG1 output pin Pin Function
IRQ7 input pin*
Note: * When this pin is used as an external interrupt input pin, this pin must not be used as an I/O
pin for another function.