µ
PD17120 SUBSERIES
4-BIT SINGLE-CHIP MICROCONTROLLER
µ
PD17120
µ
PD17121
µ
PD17132
µ
PD17133
µ
PD17P132
µ
PD17P133
©
1993
Document No. IEU-1367A
(O. D. No. IEU-835A)
Date Published July 1995 P
Printed in Japan
NOTES FOR CMOS DEVICES
1
PRECAUTION AGAINST ESD FOR SEMICONDUCTORS
Note:
Strong electric field, when exposed to a MOS device, can cause destruction of the gate oxide
and ultimately degrade the device operation. Steps must be taken to stop generation of static
electricity as much as possible, and quickly dissipate it once, when it has occurred. Environ-
mental control must be adequate. When it is dry, humidifier should be used. It is recommended
to avoid using insulators that easily build static electricity. Semiconductor devices must be
stored and transported in an anti-static container, static shielding bag or conductive material.
All test and measurement tools including work bench and floor should be grounded. The
operator should be grounded using wrist strap. Semiconductor devices must not be touched
with bare hands. Similar precautions need to be taken for PW boards with semiconductor
devices on it.
2
HANDLING OF UNUSED INPUT PINS FOR CMOS
Note:
No connection for CMOS device inputs can be cause of malfunction. If no connection is
provided to the input pins, it is possible that an internal input level may be generated due to
noise, etc., hence causing malfunction. CMOS devices behave differently than Bipolar or NMOS
devices. Input levels of CMOS devices must be fixed high or low by using a pull-up or pull-down
circuitry. Each unused pin should be connected to V
DD
or GND with a resistor, if it is considered
to have a possibility of being an output pin. All handling related to the unused pins must be
judged device by device and related specifications governing the devices.
3
STATUS BEFORE INITIALIZATION OF MOS DEVICES
Note:
Power-on does not necessarily define initial status of MOS device. Production process of MOS
does not define the initial operation status of the device. Immediately after the power source
is turned ON, the devices with reset function have not yet been initialized. Hence, power-on
does not guarantee out-pin levels, I/O settings or contents of registers. Device is not initialized
until the reset signal is received. Reset operation must be executed immediately after power-
on for devices having reset function.
SIMPLEHOST is a trademark of NEC Corporation.
MS-DOS
TM
and WINDOWS
TM
are trademarks of Microsoft Corporation.
PC/AT and PC DOS are trademarks of IBM Corporation.
The export of this product from Japan is regulated by the Japanese government. To export this product may be
prohibited without governmental license, the need for which must be judged by the customer. The export or re-
export of this product from a country other than Japan may also be prohibited without a license from that country.
Please call an NEC sales representative.
The information in this document is subject to change without notice.
No part of this document may be copied or reproduced in any form or by any means without the prior written
consent of NEC Corporation. NEC Corporation assumes no responsibility for any errors which may appear in
this document.
NEC Corporation does not assume any liability for infringement of patents, copyrights or other intellectual
property rights of third parties by or arising from use of a device described herein or any other liability arising
from use of such device. No license, either express, implied or otherwise, is granted under any patents,
copyrights or other intellectual property rights of NEC Corporation or others.
While NEC Corporation has been making continuous effort to enhance the reliability of its semiconductor devices,
the possibility of defects cannot be eliminated entirely. To minimize risks of damage or injury to persons or
property arising from a defect in an NEC semiconductor device, customer must incorporate sufficient safety
measures in its design, such as redundancy, fire-containment, and anti-failure features.
NEC devices are classified into the following three quality grades:
“Standard“, “Special“, and “Specific“. The Specific quality grade applies only to devices developed based on
a customer designated “quality assurance program“ for a specific application. The recommended applications
of a device depend on its quality grade, as indicated below. Customers must check the quality grade of each
device before using it in a particular application.
Standard: Computers, office equipment, communications equipment, test and measurement equipment,
audio and visual equipment, home electronic appliances, machine tools, personal electronic
equipment and industrial robots
Special: Transportation equipment (automobiles, trains, ships, etc.), traffic control systems, anti-disaster
systems, anti-crime systems, safety equipment and medical equipment (not specifically designed
for life support)
Specific: Aircrafts, aerospace equipment, submersible repeaters, nuclear reactor control systems, life
support systems or medical equipment for life support, etc.
The quality grade of NEC devices in “Standard“ unless otherwise specified in NEC's Data Sheets or Data Books.
If customers intend to use NEC devices for applications other than those specified for Standard quality grade,
they should contact NEC Sales Representative in advance.
Anti-radioactive design is not implemented in this product.
M7 94.11
INTRODUCTION
Targeted Reader
This manual is intended for the user engineers who understand functions of the
µ
PD17120 subseries and design their application systems using the
µ
PD17120 sub-
series
Purpose
The purpose of this manual is for the user to understand the hardware functions of
the
µ
PD17120 subseries.
Use
The manual assumes that the reader has a general knowledge of electricity, logic
circuits, microcontrollers.
•
To understand the functions of the
µ
PD17120 subseries in a general way;
→
Read the manual from
CHAPTER 1.
•
To look up instruction functions in detail when you know the mnemonic of
an instruction;
→
Use
APPENDIX D INSTRUCTION LIST.
•
To look up an instruction when you do not know its mnemonic but know
outlines of the function;
→
Refer to
18.3 LIST OF THE INSTRUCTION SET
for search for the mnemonic
of the instruction, then see
18.5 INSTRUCTIONS
for the function.
•
To look up electrical characteristics of the
µ
PD17120 subseries;
→
Refer to DATA SHEET.
Legend
Data representation weight
Active low representation
Address of memory map
Note
Caution
Remark
Number representation
: High-order and low-order digits are indicated from
left to right.
:
×××
(pin or signal name is overlined)
: Top: low, Bottom: high
: Explanation of
Note
in the text
: Caution to which you should pay attention
: Supplementary explanation to the text
: Binary number
Decimal number
...
××××
or
××××B
...
××××
or
××××D
Hexadecimal number ...
××××H
Relevant Documents
The following documents are provided for the
µ
PD17120 subseries.
The numbers listed in the table are the document numbers.
Some related documents are preliminary versions. This document, however, is not
indicated as "Preliminary".
Part Number
µ
PD17120
Document Name
Data sheet
IC-8407
[IC-2972]
User's manual
IE-17K
CLICE Ver.1.6
User's manual
IE-17K-ET
CLICE-ET Ver.1.6
User's manual
SE board
User's manual
SIMPLEHOST
TM
User's manual
AS17K (Ver.1.11)
User's manual
Device file
User's manual
µ
PD17121
IC-8399
[IC-2976]
µ
PD17132
IC-8412
[IC-2973]
µ
PD17133
IC-8411
[IC-2974]
µ
PD17P132
ID-8419
[ID-2971]
µ
PD17P133
ID-8426
[ID-2983]
This manual [IEU-1367]
EEU-929 [EEU-1467]
EEU-931 [EEU-1466]
EEU-847 [EEU-1412]
EEU-723 [EEU-1336] (Introduction)
EEU-724 [EEU-1337] (Reference)
EEU-603 [EEU-1287]
EEU-907 [EEU-1464]
Remark
The numbers inside [ ] indicate English document number.
The
µ
PD17120 subseries has different pin names and signal names depending on the system clock type, as
shown in the table below.
System Clock
RC Oscillation
Ceramic Oscillation
µ
PD17120
µ
PD17132
Pin/Signal Names
System Clock
Oscillation Pin
System Clock Frequency
µ
PD17121
µ
PD17133
µ
PD17P133
X
IN
X
OUT
f
X
µ
PD17P132
OSC
1
OSC
0
f
CC
Unless otherwise specified, this manual uses X
IN
, X
OUT
, and f
X
for descriptions. When using the
µ
PD17120,
17132, and 17P132, please change the readings to OSC
1
, OSC
0
and f
CC
.
51mcu
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