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MCP2515

Stand-Alone CAN Controller with SPI Interface

Microchip Technology 

MCP2515

FIGURE 1-2:

EXAMPLE SYSTEM IMPLEMENTATION

Node

Controller

Node

Controller

SPI

MCP2515

SPI

MCP2515

TX

RX

XCVR

TX

RX

XCVR

Node

Controller

SPI

MCP2515

TX

RX

XCVR

CANH

CANL

TABLE 1-1: PINOUT DESCRIPTION

Name

PDIP/

SOIC

Pin #

TSSOP QFN I/O/P

Pin # Pin # Type

Description

Alternate Pin Function

TXCAN

1

1

19 O Transmit output pin to CAN bus

—

RXCAN

2

2

20 I Receive input pin from CAN bus

—

CLKOUT 3

3

1 O Clock output pin with programmable Start-of-Frame signal

prescaler

TX0RTS 4

TX1RTS 5

TX2RTS 6

OSC2

7

4

2

I Transmit buffer TXB0 request-to-send. General purpose digital input.

100 kinternal pull-up to VDD

100 kinternal pull-up to VDD

5

3

I Transmit buffer TXB1 request-to-send. General purpose digital input.

100 kinternal pull-up to VDD

100 kinternal pull-up to VDD

7

5

I Transmit buffer TXB2 request-to-send. General purpose digital input.

100 kinternal pull-up to VDD

100 kinternal pull-up to VDD

8

6 O Oscillator output

—

OSC1

8

9

7

I Oscillator input

External clock input

VSS

9

10

8 P Ground reference for logic and I/O

—

pins

RX1BF 10

11

9 O Receive buffer RXB1 interrupt pin or General purpose digital output

general purpose digital output

RX0BF 11

12 10 O Receive buffer RXB0 interrupt pin or General purpose digital output

general purpose digital output

INT

12

13 11 O Interrupt output pin

—

SCK

13

14 12 I Clock input pin for SPI interface

—

SI

14

16 14 I Data input pin for SPI interface

—

SO

15

17 15 O Data output pin for SPI interface

—

CS

16

18 16 I Chip select input pin for SPI interface

—

RESET 17

19 17 I Active-low device Reset input

—

VDD

18

20 18 P Positive supply for logic and I/O pins

—

NC

—

6,15 4,13 — No internal connection

—

Note: Type Identification: I = Input; O = Output; P = Power

DS21801G-page 4

 2003-2012 Microchip Technology Inc.

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