Pin Configuration; Register Configuration - Hitachi H8S/2646 Hardware Manual

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

Table of Contents

Pin Configuration

Table 15-1 shows the HCAN's pins.

When using HCAN pins, settings must be made in the HCAN configuration mode (during

initialization: MCR0 = 1 and GSR3 = 1).

Table 15-1 HCAN Pins

HCAN transmit data pin

HCAN receive data pin

A bus driver is necessary between the pins and the CAN bus. A Philips PCA82C250 compatible

model is recommended.

Table 15-2 lists the HCAN's registers.

Table 15-2 HCAN Registers

Master control register

General status register

Bit configuration register

Mailbox configuration register

Transmit wait register

Transmit wait cancel register

Transmit acknowledge register

Abort acknowledge register

Receive complete register

Remote request register

Interrupt register

Mailbox interrupt mask register

Interrupt mask register

Receive error counter

Transmit error counter

Unread message status register

Abbreviation

Input/Output

Abbreviation R/W

CAN bus transmission pin

CAN bus reception pin

Initial Value Address* Access Size

8 bits 16 bits

8 bits 16 bits