Freescale Semiconductor, Inc.
Advance Information — 68HC(9)12D60
Section 17. MSCAN Controller
17.1 Contents
17.2 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .277
17.3 External Pins. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .278
17.4 Message Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .279
17.5 Identifier Acceptance Filter . . . . . . . . . . . . . . . . . . . . . . . . . . .284
17.6 Interrupts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .287
17.7 Protocol Violation Protection. . . . . . . . . . . . . . . . . . . . . . . . . .289
17.8 Low Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .290
17.9 Timer Link. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .294
17.10 Clock System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .295
17.11 Memory Map. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .298
17.12 Programmer’s Model of Message Storage . . . . . . . . . . . . . . .298
17.13 Programmer’s Model of Control Registers . . . . . . . . . . . . . . .303
17.2 Introduction
The msCAN12 is the specific implementation of the Motorola scalable
CAN (msCAN) concept targeted for the Motorola M68HC12
microcontroller family.
The module is a communication controller implementing the CAN 2.0 A/B
protocol as defined in the BOSCH specification dated September 1991.
The CAN protocol was primarily, but not only, designed to be used as a
vehicle serial data bus, meeting the specific requirements of this field:
68HC(9)12D60 — Rev 4.0
MOTOROLA
Advance Information
MSCAN Controller
277
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