Datasheet

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How to Use This Manual
1. Purpose and Target Readers
This manual is designed to provide the user with an understanding of the hardware functions
and electrical characteristics of the MCU. It is intended for users designing application systems
incorporating the MCU. A basic knowledge of electric circuits, logical circuits, and MCUs is
necessary in order to use this manual.
The manual comprises an overview of the product; descriptions of the CPU, system control
functions, peripheral functions, and electrical characteristics; and usage notes.
Particular attention should be paid to the precautionary notes when using the manual. These
notes occur within the body of the text, at the end of each section, and in the Usage Notes
section.
The revision history summarizes the locations of revisions and additions. It does not list all
revisions. Refer to the text of the manual for details.
The following documents apply to the H8S/2456, H8S/2456R, H8S/2454 Group. Make sure to
refer to the latest versions of these documents. The newest versions of the documents listed
may be obtained from the Renesas Electronics Web site.
Document Type Contents Document Title Document No.
Data Sheet Hardware overview and
electrical characteristics
⎯ ⎯
User’s manual for
Hardware
Hardware specifications (pin
assignments, memory maps,
peripheral function
specifications, electrical
characteristics, timing charts)
and operation description
H8S/2456, H8S/2456R,
H8S/2454 Group User’s
manual for Hardware
This User’s
manual
User’s manual for
Software
Note: Refer to the application
notes for details on using
peripheral functions.
H8S/2600 Series
H8S/2000 Series
Software Manual
REJ09B0139
Application Note Description of CPU instruction
set
Renesas Technical
Update
Information on using peripheral
functions and application
examples
Available from Renesas Electronics
Web site.