RL78/G15 CHAPTER 22 INSTRUCTION SET
R01UH0959EJ0110 Rev.1.10 Page 692 of 765
Mar 7, 2023
CHAPTER 22 INSTRUCTION SET
This chapter lists the instructions in the RL78 microcontroller instruction set. For details of each operation and operation
code, refer to the separate document RL78 Family User’s Manual: Software (R01US0015E).
22.1 Conventions Used in Operation List
22.1.1 Operand identifiers and specification methods
Operands are described in the “Operand” column of each instruction in accordance with the description method of the
instruction operand identifier (refer to the assembler specifications for details). When there are two or more description
methods, select one of them. Alphabetic letters in capitals and the symbols, #, !, !!, $, $!, [ ], and ES: are keywords and
are described as they are. Each symbol has the following meaning.
#:
Immediate data specification
!:
-bit absolute address specification
!!:
-bit absolute address specification
$:
-bit relative address specification
$!:
-bit relative address specification
[ ]:
Indirect address specification
ES::
Extension address specification
In the case of immediate data, describe an appropriate numeric value or a label. When using a label, be sure to describe
the #, !, !!, $, $!, [ ], and ES: symbols.
For operand register identifiers, r and rp, either function names (X, A, C, etc.) or absolute names (names in parentheses
in Table 22-1, R0, R1, R2, etc.) can be used for description.
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