MA330028 Microchip Technology, MA330028 Datasheet - Page 287

• Manufacturer Part Number: MA330028
• Description: Daughter Cards & OEM Boards dsPIC33EP64MC504 PIM
• Manufacturer: Microchip Technology

Specifications of MA330028

• Rohs: yes
• Product: Daughter Cards
• Core: dsPIC
• Description/function: Plug-in-module with dsPIC33EP64MC504 device for use with DM330021 and DM330023 motor control development board
• Interface Type: CAN, I2C, SPI
• Operating Supply Voltage: 3 to 3.6 V
• Tool Is For Evaluation Of: dsPIC33EP64MC504
• For Use With: DM330021, DM330023

21.0
21.1
The Enhanced Controller Area Network (ECAN)
module is a serial interface, useful for communicat-
ing with other CAN modules or microcontroller
devices. This interface/protocol was designed to
allow communications within noisy environments.
The dsPIC33EPXXXGP/MC50X devices contain one
ECAN module.
The ECAN module is a communication controller
implementing the CAN 2.0 A/B protocol, as defined in
the BOSCH CAN specification. The module supports
CAN 1.2, CAN 2.0A, CAN 2.0B Passive and CAN 2.0B
Active versions of the protocol. The module implemen-
tation is a full CAN system. The CAN specification is
not covered within this data sheet. The reader can refer
to the BOSCH CAN specification for further details.
© 2011-2012 Microchip Technology Inc.
Note 1: This data sheet summarizes the features
2: Some registers and associated bits
ENHANCED CAN (ECAN™)
MODULE (dsPIC33EPXXXGP/
MC50X DEVICES ONLY)
Overview
of
dsPIC33EPXXXMC20X/50X,
PIC24EPXXXGP/MC20X
devices. It is not intended to be a
comprehensive reference source. To
complement the information in this data
sheet, refer to Section 21. “Enhanced
Controller Area Network (ECAN™)”
(DS70353) of the “dsPIC33E/PIC24E
Family Reference Manual”, which is
available from the Microchip web site
(www.microchip.com).
described in this section may not be
available on all devices. Refer to
Section 4.0 “Memory Organization”
this data sheet for device-specific register
and bit information.
the
dsPIC33EPXXXGP50X,
families
and
Preliminary
of
in
The ECAN module features are as follows:
• Implementation of the CAN protocol, CAN 1.2,
• Standard and extended data frames
• 0-8 bytes data length
• Programmable bit rate up to 1 Mbit/sec
• Automatic response to remote transmission
• Up to eight transmit buffers with application speci-
• Up to 32 receive buffers (each buffer can contain
• Up to 16 full (standard/extended identifier)
• Three full acceptance filter masks
• DeviceNet™ addressing support
• Programmable wake-up functionality with
• Programmable Loopback mode supports self-test
• Signaling via interrupt capabilities for all CAN
• Programmable clock source
• Programmable link to Input Capture module (IC2)
• Low-power Sleep and Idle mode
The CAN bus module consists of a protocol engine and
message buffering/control. The CAN protocol engine
handles all functions for receiving and transmitting
messages on the CAN bus. Messages are transmitted
by first loading the appropriate data registers. Status
and errors can be checked by reading the appropriate
registers. Any message detected on the CAN bus is
checked for errors and then matched against filters to
see if it should be received and stored in one of the
receive registers.
CAN 2.0A and CAN 2.0B
requests
fied prioritization and abort capability (each buffer
can contain up to 8 bytes of data)
up to 8 bytes of data)
acceptance filters
integrated low-pass filter
operation
receiver and transmitter error states
for time-stamping and network synchronization
DS70657E-page 287