Instruction Set Manual Version 1.2, 12.97
Instruction Set Manual
for the C16x Family of
Siemens 16-Bit CMOS Single-Chip Microcontrollers
ht
tp://www
.siemens.de/
Semiconductor/
Version 1.2, 12.97
Published by Siemens AG,
Bereich Halbleiter, Marketing-
Kommunikation, Balanstrae 73,
81541 Mnchen
Siemens AG 1997.
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C166 Family Microcontroller Instruction Set Manual
Revision History:
Version 1.2, 12.97
Previous Releases:
Version 1.1, 09.95
03.94
Page
Subjects
8
BFLD* code size corrected
35
ADDCB: spelling corrected
38
ASHR: "operation" corrected
43, 44
BFLD*: Note improved, format corrected
51
CALLI: "operation" corrected
67
EINIT: Syntax corrected
75
JBC: Condition flags corrected
77
JMPI: "operation" corrected
81
JNBS: Condition flags corrected
86, 87
MUL(U): Flag N corrected
95
PRIOR: "Operation" corrected
104
SCXT: Data Type added
108
SRVWDT: Syntax corrected
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C166 Family Instruction Set
Table of Contents
Table of Contents
Page
Semiconductor Group
4
Version 1.2, 12.97
1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2
Short Instruction Summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3
Instruction Set Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4
Instruction Opcodes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5
Instruction Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
6
Addressing Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
7
Instruction State Times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
30Mar98@15:00h
Semiconductor Group
5
Version 1.2, 12.97
C166 Family Instruction Set
Introduction
1
Introduction
The Siemens family of 16-bit microcontrollers offers devices that provide various levels of peripheral
performance and programmability. This allows to equip each specific application with the
microcontroller that fits best to the required functionality and performance.
Still the Siemens family concept provides an easy path to upgrade existing applications or to climb
the next level of performance in order to realize a subsequent more sophisticated design. Two
major characteristics enable this upgrade path to save and reuse almost all of the engineering
efforts that have been made for previous designs:
All family members are based on the same basic architecture
All family members execute the same instructions (except for upgrades for new members)
The fact that all members execute the same instructions (almost) saves knowhow with respect to
the understanding of the controller itself and also with respect to the used tools (assembler,
disassembler, compiler, etc.).
This instruction set manual provides an easy and direct access to the instructions of the Siemens
16-bit microcontrollers by listing them according to different criteria, and also unloads the technical
manuals for the different devices from redundant information.
This manual also describes the different addressing mechanisms and the relation between the
logical addresses used in a program and the resulting physical addresses.
There is also information provided to calculate the execution time for specific instructions depending
on the used address locations and also specific exceptions to the standard rules.
Description Levels
In the following sections the instructions are compiled according to different criteria in order to
provide different levels of precision:
Cross Reference Tables summarize all instructions in condensed tables
The Instruction Set Summary groups the individual instructions into functional groups
The Opcode Table references the instructions by their hexadecimal opcode
The Instruction Description describes each instruction in full detail
All instructions listed in this manual are executed by the following devices (new derivatives will be
added to this list):
C161V, C161K, C161O, C161RI, C161SI, C161CI, C163, C163F, C164CI, C165, C167, C167CR,
C167SR, C167S, C167CS.
A few instructions (ATOMIC and EXTended instructions) have been added for these devices and
are not recognized by the following devices:
SAB 80C166, SAB 80C166W, SAB 83C166, SAB 83C166W, SAB 88C166, SAB 88C166W.
These differences are noted for each instruction, where applicable.
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