Renesas rl78 User Manual

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). 

 

 

•  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).