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  Microchip Technology Semiconductor Electronic Components Datasheet  

MCP2510 Datasheet

Stand-Alone CAN Controller with SPI Interface

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MCP2510 pdf
MCP2510
Stand-Alone CAN Controller with SPI® Interface
FEATURES
• Implements Full CAN V2.0A and V2.0B at 1 Mb/s
- 0 - 8 byte message length
- Standard and extended data frames
- Programmable bit rate up to 1 Mb/s
- Support for remote frames
- Two receive buffers with prioritized message
storage
- Six full acceptance filters
- Two full acceptance filter masks
- Three transmit buffers with prioritization and
abort features
- Loop-back mode for self test operation
• Hardware Features
- High Speed SPI Interface
(5 MHz at 4.5V I temp)
- Supports SPI modes 0,0 and 1,1
- Clock out pin with programmable prescaler
- Interrupt output pin with selectable enables
- ‘Buffer full’ output pins configureable as inter-
rupt pins for each receive buffer or as general
purpose digital outputs
- ‘Request to Send’ input pins configureable as
control pins to request immediate message
transmission for each transmit buffer or as
general purpose digital inputs
- Low Power Sleep mode
• Low power CMOS technology
- Operates from 3.0V to 5.5V
- 5 mA active current typical
- 10 µA standby current typical at 5.5V
• 18-pin PDIP/SOIC and 20-pin TSSOP packages
• Temperature ranges supported:
- Industrial (I):
- Extended (E):
-40°C to +85°C
-40°C to +125°C
SPI is a registered trademark of Motorola Inc.
DESCRIPTION
The Microchip Technology Inc. MCP2510 is a Full Con-
troller Area Network (CAN) protocol controller imple-
menting CAN specification V2.0 A/B. It supports CAN
1.2, CAN 2.0A, CAN 2.0B Passive, and CAN 2.0B Active
versions of the protocol, and is capable of transmitting
and receiving standard and extended messages. It is
also capable of both acceptance filtering and message
management. It includes three transmit buffers and two
receive buffers that reduce the amount of microcontroller
(MCU) management required. The MCU communication
is implemented via an industry standard Serial Periph-
eral Interface (SPI) with data rates up to 5Mb/s.
PACKAGE TYPES
18 LEAD PDIP
TXCAN 1
RXCAN
CLKOUT
TX0RTS
TX1RTS
2
3
4
5
TX2RTS 6
OSC2 7
OSC1 8
Vss 9
18 VDD
17 RESET
16 CS
15 SO
14 SI
13 SCK
12 INT
11 RX0BF
10 RX1BF
18 LEAD SOIC
TXCAN
RXCAN
CLKOUT
TX0RTS
TX1RTS
TX2RTS
OSC2
OSC1
Vss
1
2
3
4
5
6
7
8
9
20 LEAD TSSOP
TXCAN
RXCAN
CLKOUT
TX0RTS
TX1RTS
NC
TX2RTS
OSC2
OSC1
Vss
1
2
3
4
5
6
7
8
9
10
18 VDD
17 RESET
16 CS
15 SO
14 SI
13 SCK
12 INT
11 RX0BF
10 RX1BF
20 VDD
19 RESET
18 CS
17 SO
16 SI
15 NC
14 SCK
13 INT
12 RX0BF
11 RX1BF
1999 Microchip Technology Inc.
Preliminary
DS21291C-page 1



  Microchip Technology Semiconductor Electronic Components Datasheet  

MCP2510 Datasheet

Stand-Alone CAN Controller with SPI Interface

No Preview Available !

MCP2510 pdf
MCP2510
Table of Contents
1.0 Device Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.0 Can Message Frames. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.0 Message Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.0 Message Reception . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.0 Bit Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
6.0 Error Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
7.0 Interrupts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
8.0 Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
9.0 Modes of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
10.0
Register Map. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
11.0
SPI Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
12.0
Electrical Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
13.0
Packaging Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
On-Line Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Reader Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
MCP2510 Product Identification System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
List Of Figures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
List Of Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
List Of Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Worldwide Sales and Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
To Our Valued Customers
Most Current Data Sheet
To obtain the most up-to-date version of this data sheet, please check our Worldwide Web site at:
http://www.microchip.com
You can determine the version of a data sheet by examining its literature number found on the bottom outside corner of any page.
The last character of the literature number is the version number. e.g., DS30000A is version A of document DS30000.
Errata
An errata sheet may exist for current devices, describing minor operational differences (from the data sheet) and recommended
workarounds. As device/documentation issues become known to us, we will publish an errata sheet. The errata will specify the
revision of silicon and revision of document to which it applies.
To determine if an errata sheet exists for a particular device, please check with one of the following:
Microchips Worldwide Web site; http://www.microchip.com
Your local Microchip sales office (see last page)
The Microchip Corporate Literature Center; U.S. FAX: (480) 786-7277
When contacting a sales office or the literature center, please specify which device, revision of silicon and data sheet (include lit-
erature number) you are using.
Corrections to this Data Sheet
We constantly strive to improve the quality of all our products and documentation. We have spent a great deal of time to ensure
that this document is correct. However, we realize that we may have missed a few things. If you find any information that is missing
or appears in error, please:
Fill out and mail in the reader response form in the back of this data sheet.
E-mail us at webmaster@microchip.com.
We appreciate your assistance in making this a better document.
DS21291C-page 2
Preliminary
1999 Microchip Technology Inc.



  Microchip Technology Semiconductor Electronic Components Datasheet  

MCP2510 Datasheet

Stand-Alone CAN Controller with SPI Interface

No Preview Available !

MCP2510 pdf
1.0 DEVICE FUNCTIONALITY
1.1 Overview
The MCP2510 is a stand-alone CAN controller devel-
oped to simplify applications that require interfacing
with a CAN bus. A simple block diagram of the
MCP2510 is shown in Figure 1-1. The device consists
of three main blocks:
1. the CAN protocol engine,
2. the control logic and SRAM registers that are
used to configure the device and its operation,
and
3. the SPI protocol block.
A typical system implementation using the device is
shown in Figure 1-2.
The CAN protocol engine handles all functions for
receiving and transmitting messages on the bus. Mes-
sages are transmitted by first loading the appropriate
message buffer and control registers. Transmission is
initiated by using control register bits, via the SPI inter-
face, or by using the transmit enable pins. Status and
errors can be checked by reading the appropriate reg-
isters. Any message detected on the CAN bus is
MCP2510
checked for errors and then matched against the user
defined filters to see if it should be moved into one of
the two receive buffers.
The MCU interfaces to the device via the SPI interface.
Writing to and reading from all registers is done using
standard SPI read and write commands.
Interrupt pins are provided to allow greater system flex-
ibility. There is one multi-purpose interrupt pin as well
as specific interrupt pins for each of the receive regis-
ters that can be used to indicate when a valid message
has been received and loaded into one of the receive
buffers. Use of the specific interrupt pins is optional,
and the general purpose interrupt pin as well as status
registers (accessed via the SPI interface) can also be
used to determine when a valid message has been
received.
There are also three pins available to initiate immediate
transmission of a message that has been loaded into
one of the three transmit registers. Use of these pins is
optional and initiating message transmission can also
be done by utilizing control registers accessed via the
SPI interface.
Table 1-1 gives a complete list of all of the pins on the
MCP2510.
RXCAN
TXCAN
CAN
Protocol
Engine
3 TX
Buffers
2 RX Buffers
6 Acceptance
Filters
Message Assembly
Buffer
Control Logic
FIGURE 1-1: Block Diagram
SPI
Interface
Logic
CS
SCK
SI
SO
SPI
Bus
INT
RX0BF
RX1BF
TX0RTS
TX1RTS
TX2RTS
1999 Microchip Technology Inc.
Preliminary
DS21291C-page 3




Part Number MCP2510
Description Stand-Alone CAN Controller with SPI Interface
Maker Microchip Technology
Total Page 30 Pages
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