AduC812_UserGuide.pdf
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Preface
a
MicroConverter
®
Products
Products
ADuC812 User’s Manual
Revision Draft.05
MicroConverter
® MicroConverter is a Registered Trademark of Analog Devices, Inc.
™ QuickStart is a Trademark of Analog Devices, Inc.
® SPI is a Registered Trademark of Motorola, Inc.
® I2C is a Registered Trademark of Philips Semiconductor, Inc.
Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is
assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties which
may result from its use. No license is granted by implication or otherwise under any patent or patent rights of
Analog Devices.
© Analog Devices, Inc., 2000
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617-329-4700
Fax: 617-326-8703
CONTENTS:
Preface
4
Chapter 1
Hardware Design Guide
5
Chapter 2
Microcontroller Core
(in progress)
Chapter 3
Programmer’s Guide
(in progress)
Chapter 4
Other Modes of Operation
(in progress)
Appendices
(in progress)
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3
Preface
Analog Devices Inc. designs and manufacturers a broad line of linear, mixed signal and digital signal processing
integrated circuits. Analog Devices is recognized as an industry leader in the innovation and design of high-
performance analog products and digital signal processing solutions. Find out more about Analog Devices from
our web site -
www.analog.com
.
Analog Devices' new MicroConverter products feature a unique integration of technologies combining high-
resolution data conversion with on-chip microcontroller and nonvolatile memory functionality. Together, these
features make up the world's first high precision data acquisition system on a chip.
This User's Manual details both the hardware and software features of the ADuC812 MicroConverter. The
intended audience is both the software programmer and hardware/system designer.
Additional documentation, including technical datasheets, technical notes and quick reference guides should be
used to supplement this text. This additional documentation can be found at the Analog Devices MicroConverter
web site. -
www.analog.com/microconverter
.
Customer Service and Technical Support:
For product marketing information or technical support, contact any Analog Devices sales office or authorized
distributor.
For applications engineering assistance, please use the following contacts:
North America:
Call 800-ANALOG-D (800-262-5643)
Email
linear.apps@analog.com
Europe:
Call 353-61-495969
Email
euro.linear@analog.com
Rest of World:
Call 781-937-1428
Email
linear.apps@analog.com
4
a
Chapter 1
Hardware Design Guide
1.1 Brief Overview of the ADuC812
6
1.3 Voltage Reference Connections
7
1.4 The D/A Converter Outputs
9
1.5 Clock Oscillator
11
1.6 External Memory Interface
11
1.7 I/O Ports
13
1.8 Reset & POR (Power-On Reset)
16
1.9 Power Supplies
17
1.10 Grounding, Board Layout, Etc.
18
1.11 Other Hardware Considerations
20
1.12 PinFunctions
22
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5
1.2 Driving the A/D Converter
8
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