Preface – Renesas SH7781 User Manual
Page 5
Rev.1.00 Jan. 10, 2008 Page v of xxx
REJ09B0261-0100
Preface
This LSI is a RISC (Reduced Instruction Set Computer) microcomputer which includes a Renesas
Technology-original RISC CPU (SH-4A) and various peripheral functions required to configure a
system.
Target Users: This manual was written for users who will be using this LSI in the design of
application systems. Users of this manual are expected to understand the
fundamentals of electrical circuits, logical circuits, and microcomputers.
Objective:
This manual was written to explain the hardware functions and electrical
characteristics of this LSI to the above users.
Notes on reading this manual:
• In order to understand the overall functions of the chip
Read the manual according to the contents. This manual consists of parts on the CPU, system
control functions, peripheral functions and electrical characteristics.
• In order to understand individual instructions in detail
Read the separate manuals SH-4A Extended Functions Software Manual and SH-4A Software
Manual.
Rules:
Bit order:
The MSB is on the left and the LSB is on the right.
Number notation:
Binary is B'xxxx, hexadecimal is H'xxxx, decimal is xxxx.
Signal notation:
An overbar is added to active-low signals: xxxx