H83028 datasheet(86/923 Pages) RENESAS

부품명	H83028

상세설명	Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series

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제조업체	RENESAS [Renesas Technology Corp]

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86 / 923 page

Rev. 2.00, 09/03, page 56 of 890

Mode 5 is an externally expanded mode that enables access to external memory and peripheral

devices and also enables access to the on-chip ROM. Mode 5 supports a maximum address space

of 16 Mbytes.

Modes 6 and 7 are single-chip modes that operate using the on-chip ROM, RAM, and registers,

and makes all I/O ports available. Mode 6 supports a maximum address space of 64 kbytes. Mode

7 supports a maximum address space of 1 Mbyte.

The H8/3028 Group can be used only in modes 1 to 7. The inputs at the mode pins must select one

of these seven modes. The inputs at the mode pins must not be changed during operation.

3.1.2

The H8/3028 Group has a mode control register (MDCR) that indicates the inputs at the mode

pins (MD2 to MD0), and a system control register (SYSCR). Table 3.2 summarizes these registers.

Table 3.2

Registers

Address*

Name

Abbreviation

R/W

Initial Value

H'EE011

Mode control register

MDCR

Undetermined

H'EE012

System control register

SYSCR

R/W

H'09

Note: * Lower 20 bits of the address in advanced mode.

H83028 데이터시트(PDF) 86 Page - Renesas Technology Corp