
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. For
details, refer to the text of the manual.
The following documents apply to the R8C/38T-A 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
Description
Document Title
Document No.
Datasheet
Hardware overview characteristic
R8C/38T-A Group
Datasheet
R01DS0081EJ0001
User’s manual: Hardware
Hardware specifications (pin assignments,
memory maps, peripheral function
specifications, electrical characteristics, timing
charts) and operation description
Note: Refer to the application notes for details
on using peripheral functions.
R8C/38T-A Group
User’s Manual:
Hardware
This User’s manual
User’s manual: Software
Description of CPU instruction set
R8C/5x Series
User’s manual:
Software
R01US0007EJ
Application note
Information on using peripheral functions and
application examples
Sample programs
Information on writing programs in assembly
language and C
Available from Renesas Electronics Web
site.
Renesas technical update Product specifications, updates on
documents, etc.