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MCP2551 High Speed CAN Transceiver

MCP2551 High Speed CAN Transceiver. Market Introduction Sales Training August, 2002. Agenda. Brief technical overview ISO11898 Introducing the MCP2551 Features, competitive comparison, advantages Whole product support. CAN Physical Layers.

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MCP2551 High Speed CAN Transceiver

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  1. MCP2551 High Speed CAN Transceiver Market Introduction Sales Training August, 2002

  2. Agenda • Brief technical overview • ISO11898 • Introducing the MCP2551 • Features, competitive comparison, advantages • Whole product support

  3. CAN Physical Layers • Any physical layer can be used providing they are compatible with the CAN specification • Recessive and dominant states defined per CAN spec • Examples: • Balanced 2-wire • Fiber Optical • 1-wire • Open collector • The most popular is the balanced 2-wire (differential) implementation

  4. What is ISO11898? • ISO 11898 is an international standard that includes the CAN protocol specification PLUS the balanced 2-wire physical layer specification • ISO 11898 rigidly defines the physical layer characteristics (Vdd range, diff bus voltage requirements, max speed for various cable lengths, short circuit tolerance, etc.) • Many industrial and automotive applications require an ISO 11898 compatible CAN transceiver • The MCP2551 CAN transceiver is ISO 11898 compatible (see table later in this presentation)

  5. MCP MCP MCP CAN Controller CAN Controller MCU A/D PWM I/O CAN XCVR 2551 2551 2551 CAN Bus MCP2551 High Speed CAN Transceiver • Provides physical interface between node functionality and CAN bus • Supports 1Mbps maximum CAN bus speeds CAN functionality can implemented on MCU or on separate devices A transceiver is almost always required on every node

  6. MCP2551 Key Features • Industry-standard 8-pin footprint • Balanced output drivers for low EMI • High speed, slope control, and standby modes • Power-on-Reset and Brown-Out Detection • CAN bus drivers remain high impedance during POR and brown-out • Very robust • Permanent dominant detection on TxD • Drivers disable on extended transmitter input • CAN bus continuous short circuit protection of ±40 V • Will withstand voltage transients up to ±250 V • Automatic thermal shutdown protection

  7. High Speed CAN Transceiver Spec Comparison • The last three parts on this list do not meet minimum ISO11898 requirements

  8. MCP2551 Competitive Advantages • Withstands widest range of continuous short circuit voltage among ISO11898 transceivers • -40V to +40V with no time limit • Withstands widest range of transient voltages • -250V to +250V per ISO7637 specification • Permanent dominant detection • Prevent stuck node from taking all network bandwidth • Only one competitor offers this feature

  9. Competitive Advantages (con’t) • Better ESD protection than virtually all ISO11898 compatible transceivers • Very short propagation delay in Slope Control (SC) mode • The MCP2551 can run CAN bus speeds 250k in slope control mode and competitor cannot

  10. Additional Competitive Information • EMI output generated is as low as major competitor’s device • Testing done internally per J1752/3 specification • The MCP2551 is a robust alternative to current CAN transceivers in the market today!

  11. Whole Product Support • Samples available from Microchip • Available in both I (-40 to +85C) and E (-40 to +125C) temp ranges • CAN Transceiver info on MCHP website - now • MCP2551 Datasheet (DS21667B) - on Web now • Updated CAN Peripheral Products Fact Sheet (DS20056C) - now • MCP2551 sample packs • Available by the end of August • Pricing - now in Microchip pricebook

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