How to Use This Manual
Readers This manual is intended for user engineers who wish to understand the functions of the
RL78/G1H and design and develop application systems and programs for these devices.
Purpose This manual is intended to give users an understanding of the functions described in the
Organization below.
Organization The RL78/G1H manual is separated into two parts: this manual and the software edition
(common to the RL78 family).
How to Read This Manual
It is assumed that the readers of this manual have general knowledge of electrical engineering,
logic circuits, and microcontrollers.
• To gain a general understanding of functions:
→ Read this manual in the order of the CONTENTS. The mark “<R>” shows major revised
points. The revised points can be easily searched by copying an “<R>” in the PDF file and
specifying it in the “Find what:” field.
• How to interpret the register format:
→ For a bit number enclosed in angle brackets, the bit name is defined as a reserved word
in the assembler, and is defined as an sfr variable using the #pragma sfr directive in the
compiler.
• To know details of the RL78/G1H Microcontroller instructions:
→ Refer to the separate document RL78 Family User's Manual Software (R01US0015E).
RL78/G1H
User’s Manual
Hardware
(This Manual)
RL78 Family
User’s Manual
Software
• Pin functions
• Internal block functions
• Interrupts
• Other on-chip peripheral functions
• Electrical specifications
• CPU functions
• Instruction set
• Explanation of each instruction
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