S912XHZ512F1VAG Datasheet, PDF (507/978 Pages) Freescale Semiconductor, Inc – Covers MC9S12XHZ384, MC9S12XHZ256

Chapter 14
Freescale’s Scalable Controller Area Network
(S12MSCANV3)
Table 14-1. Revision History
Revision
Number
Revision Date
Sections
Affected
Description of Changes
V03.10
V03.11
V03.12
19 Aug 2008
31 Mar 2009
09 Aug 2010
14.4.7.4/14-559 - Corrected wake-up description
14.4.4.5/14-553 - Relocated initialization section
14.2/14-510 - Added note to external pin descriptions for use with integrated physical layer
- Minor corrections
- Orthographic corrections
Table 14-37 - Added ‘Bosch CAN 2.0A/B’ to bit time settings table
14.1 Introduction
Freescale’s scalable controller area network (S12MSCANV3) definition is based on the MSCAN12
definition, which is the specific implementation of the MSCAN concept targeted for the M68HC12
microcontroller family.
The module is a communication controller implementing the CAN 2.0A/B protocol as defined in the
Bosch specification dated September 1991. For users to fully understand the MSCAN specification, it is
recommended that the Bosch specification be read first to familiarize the reader with the terms and
concepts contained within this document.
Though not exclusively intended for automotive applications, CAN protocol is designed to meet the
specific requirements of a vehicle serial data bus: real-time processing, reliable operation in the EMI
environment of a vehicle, cost-effectiveness, and required bandwidth.
MSCAN uses an advanced buffer arrangement resulting in predictable real-time behavior and simplified
application software.
MC9S12XHZ512 Data Sheet, Rev. 1.06
Freescale Semiconductor
507