Hitachi H8S/2646 Hardware Manual page 278

Hitachi 16-bit single-chip microcomputer h8s/2646 series

Table of Contents

Selection Method and Pin Functions

Switches as follows according to combinations of bit TE of SCR1 and bit P33DDR.

Pin function

Note: * When P33ODR = 1, it becomes NMOS open drain output.

Switches as follows according to combinations of bit C/A of SMR0, bits CKE0 and

CKE1 of SCR0, and bit P32DDR.

Pin function

Note: * When P32ODR = 1, it becomes NMOS open drain output.

Switches as follows according to combinations of bit RE of SCR0 and bit P31DDR.

Pin function

Note: * When P31ODR = 1, it becomes NMOS open drain output.

Switches as follows according to combinations of bit TE of SCR0 and bit P30DDR.

Pin function

Note: * When P30ODR = 1, it becomes NMOS open drain output.

P33 input pin

P31 input pin

P31 output pin*

P30 input pin

P30 output pin*

P33 output pin*

RxD0 input pin

TxD0 output pin*

TxD1 output pin*