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IA82527
CAN Serial Communications Controller
As of Production Ver. 00
04 May 2007
PRELIMINARY
IA82527
Serial Communications Controller CAN Protocol
Data Sheet
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Document Version 1.0
Copyright 2007
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EN21070504-00
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IA82527
CAN Serial Communications Controller
As of Production Ver. 00
04 May 2007
PRELIMINARY
Copyright © 2007 by Innovasic Semiconductor, Inc.
Published by Innovasic Semiconductor, Inc.
3737 Princeton Drive NE, Suite 130, Albuquerque, NM 87107
Innovasic Semiconductor, Inc.
3737 Princeton Drive NE, Suite 130
Albuquerque, NM 87107-4237
www.innovasic.com
An ISO 9001:2000 Company
Office:
FAX:
Toll Free:
505.883.5263
505.883.5477
1-888.824.4184
Intel® is a registered trademark of Intel Corporation.
MILES™ is a trademark of Innovasic Semiconductor, Inc.
Motorola® is a registered trademark of Motorola, Inc.
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IA82527
CAN Serial Communications Controller
As of Production Ver. 00
04 May 2007
PRELIMINARY
Table of Contents
Contents
1. Introduction......................................................................................................................... 5
1.1 General Description .................................................................................................... 5
1.2 Features ..................................................................................................................... 6
2. Packaging and Pin Descriptions ......................................................................................... 7
2.1 Packages and Pinouts ................................................................................................ 7
2.2 Pin/Signal Descriptions ............................................................................................. 10
3. Maximum Ratings, Thermal Characteristics, and DC Parameters..................................... 18
4. Functional Description ...................................................................................................... 21
4.1 Hardware Architecture .............................................................................................. 21
4.1.1 CAN Controller.............................................................................................. 22
4.1.2 RAM ............................................................................................................. 22
4.1.3 CPU Interface ............................................................................................... 22
4.1.4 I/O Ports ....................................................................................................... 23
4.1.5 Programmable Clock Output......................................................................... 23
4.2 Address Map............................................................................................................. 23
4.3 CAN Message Objects.............................................................................................. 23
5. AC Characteristics............................................................................................................ 26
6. Physical Dimensions......................................................................................................... 42
7. Ordering Information......................................................................................................... 45
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IA82527
CAN Serial Communications Controller
As of Production Ver. 00
04 May 2007
PRELIMINARY
List of Figures
Figure 1. IA82527 44-Pin PLCC Package Diagram ................................................................... 8
Figure 2. IA82527 44-Pin QFP Package Diagram ..................................................................... 9
Figure 3. IA82527 Functional Block Diagram........................................................................... 21
Figure 4. mosi/miso Connection .............................................................................................. 22
Figure 5. IA82527 Address Map .............................................................................................. 24
Figure 6. IA82527 Message Object Structure .......................................................................... 25
Figure 7. Mode 0 and Mode 1 General Bus Timing ................................................................. 29
Figure 8. Mode 0 and Mode 1 ready Timing for Read Cycle.................................................... 30
Figure 9. Mode 0 and Mode 1 ready Timing for Write Cycle with No Write Pending ................ 30
Figure 10. Mode 0 & Mode 1 ready Timing for Write Cycle with Write Active........................... 31
Figure 11. Mode 2 General Bus Timing ................................................................................... 33
Figure 12. Mode 3, Asynchronous Operation, Read Cycle ...................................................... 35
Figure 13. Mode 3, Asynchronous Operation, Write Cycle ...................................................... 36
Figure 14. Mode 3, Synchronous Operation, Read Cycle Timing ............................................ 38
Figure 15. Mode 3, Synchronous Operation, Write Cycle Timing............................................. 39
Figure 16. Serial Interface Mode, icp = 0 and cp = 0 ............................................................... 41
Figure 17. Serial Interface Mode, icp = 1 and cp = 1 ............................................................... 41
Figure 18. 44-Pin PLCC Physical Dimensions......................................................................... 43
Figure 19. 44-Pin QFP Physical Dimensions ........................................................................... 44
List of Tables
Table 1. IA82527 44-Pin PLCC Pin List..................................................................................... 8
Table 2. IA82527 44-Pin QFP Pin List ....................................................................................... 9
Table 3. IA82527 Pin/Signal Descriptions................................................................................ 10
Table 4. IA82527 Absolute Maximum Ratings ......................................................................... 18
Table 5. IA82527 Thermal Characteristics............................................................................... 18
Table 6. IA82527 DC Parameters............................................................................................ 19
Table 7. IA82527 ISO Physical Layer DC Parameters............................................................. 20
Table 8. Mode 0 and Mode 1 General Bus and ready Timing .................................................. 27
Table 9. Mode 2 General Bus Timing ...................................................................................... 32
Table 10. Mode 3 Asynchronous Operation Timing ................................................................. 34
Table 11. Mode 3 Synchronous Operation Timing................................................................... 37
Table 12. Serial Interface Mode Timing ................................................................................... 40
Table 13. 44-Pin PLCC Physical Dimensions .......................................................................... 43
Table 14. 44-Pin QFP Physical Dimensions ............................................................................ 44
Table 15. IA82527 Ordering Information.................................................................................. 45
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IA82527
CAN Serial Communications Controller
As of Production Ver. 00
04 May 2007
PRELIMINARY
1. Introduction
The Innovasic Semiconductor IA82527 Controller Area Network (CAN) Serial Communications
Controller is a form, fit, and function replacement for the original Intel® 82527 Serial
Communications Controller.
These devices are produced using Innovasic’s Managed IC Lifetime Extension System
(MILES™). This cloning technology, which produces replacement ICs beyond simple
emulations, ensures complete compatibility with the original device, including any
“undocumented features.” Additionally, MILES™ captures the clone design in such a way that
production of the clone can continue even as silicon technology advances.
The IA82527 Serial Communications Controller replaces the obsolete Intel® 82527 device,
allowing users to retain existing board designs, software compilers/assemblers, and emulation
tools, thereby avoiding expensive redesign efforts.
NOTE
This data sheet contains preliminary information for the
Innovasic Semiconductor IA82527 Serial Communications
Controller. The finalized data sheet that documents all
necessary engineering information about the IA82527 will be
available when the device nears completion in Q2 2008.
1.1 General Description
Controller Area Network (CAN) protocol uses a multi-master CSMA/CR (Carrier Sense, Multiple
Access with Collision Resolution) bus to transfer message objects between network nodes.
The IA82527 supports CAN Specification 2.0 Part A and B, standard and extended message
frames, and has the capability to transmit, receive, and perform message filtering on extended
message frames.
The IA82527 can store 15 message objects of 8-byte data length. Each message object can be
configured as either transmit or receive except for the last message object, which is receive-
only. The last message object also provides a special acceptance mask designed to allow
select groups of different message identifiers to be received.
The IA82527 also provides a programmable acceptance mask that allows users to globally
mask any identifier bits of the incoming message. This global mask can be used for both
standard and extended message frames.
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