Section 3 Mcu Operating Modes; Overview; Operating Mode Selection; Table 3.1 Operating Mode Selection - Hitachi H8/3062 Hardware Manual

Single-chip microcomputer h8/3062 series; h8/3062b series; h8/3062f-ztat series; h8/3064f-ztat series

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Table of Contents

The H8/3062 Series has seven operating modes (modes 1 to 7) that are selected by the mode pins

) as indicated in table 3.1. The input at these pins determines the size of the address

space and the initial bus mode.

Operating Mode Selection

Notes: *1 In modes 1 to 5, an 8-bit or 16-bit data bus can be selected on a per-area basis by

settings made in the area bus width control register (ABWCR). For details see

section 6, Bus Controller.

*2 If the RAME bit in SYSCR is cleared to 0, these addresses become external addresses.

For the address space size there are three choices: 64 kbytes, 1 Mbyte, or 16 Mbyte. The external

data bus is either 8 or 16 bits wide depending on ABWCR settings. 8-bit bus mode is used only if

8-bit access is selected for all areas. For details see section 6, Bus Controller.

Modes 1 to 4 are externally expanded modes that enable access to external memory and peripheral

devices and disable access to the on-chip ROM. Modes 1 and 2 support a maximum address space

of 1 Mbyte. Modes 3 and 4 support a maximum address space of 16 Mbytes.

Section 3 MCU Operating Modes

Address Space

Setting prohibited

Expanded mode

Single-chip normal mode

Single-chip advanced

Initial Bus On-Chip