Microcontroller User's Manual

25-2 MCF5282 User’s Manual MOTOROLA
Features
• “Time Stamp”, based on 16-bit free-running timer
• Global network time, synchronized by a specific message
• Programmable I/O modes
• Maskable interrupts
• Independent of the transmission medium (external transceiver is assumed)
• Open network architecture
• Multimaster bus
• High immunity to EMI
• Short latency time for high-priority messages
• Low-power “sleep” mode, with programmable “wake up” on bus activity
A block diagram describing the various submodules of the FlexCAN module is shown in
Figure 25-1. Each submodule is described in detail in subsequent sections.
Figure 25-1. FlexCAN Block Diagram and Pinout
MB0
MB2
MB1
MB3
MB12
MB14
MB13
MB15
0.25k/0.5KB
RAM
Bus Interface Unit
MB #
(0-15)
Transmitter
Receiver
Control
CANTX
CANRX
Internal Bus