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How to Use This Manual
Readers This manual is intended for user engineers who wish to understand the functions of the
RL78/G1A and design and develop application systems and programs for these devices.
The target products are as follows.
• 25-pin: R5F10E8x (x = A, C, D, E)
• 32-pin: R5F10EBx (x = A, C, D, E)
• 48-pin: R5F10EGx (x = A, C, D, E)
• 64-pin: R5F10ELx (x = C, D, E)
Purpose This manual is intended to give users an understanding of the functions described in the
Organization below.
Organization The RL78/G1A manual is separated into two parts: this manual and the instructions edition
(common to the RL78 Microcontroller).
RL78/G1A
User’s Manual
(This Manual)
RL78 Microcontroller
User’s Manual
Instructions
• Pin functions
• Internal block functions
• Interrupts
• Other on-chip peripheral functions
• Electrical specifications
• CPU functions
• Instruction set
• Explanation of each instruction
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 RL78G1A Microcontroller instructions:
→ Refer to the separate document RL78 Microcontroller Instructions User’s Manual
(R01US0015E).