Datasheet

MCP2515
DS21801G-page 4  2003-2012 Microchip Technology Inc.
FIGURE 1-2: EXAMPLE SYSTEM IMPLEMENTATION
TABLE 1-1: PINOUT DESCRIPTION
Name
PDIP/
SOIC
Pin #
TSSOP
Pin #
QFN
Pin #
I/O/P
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
prescaler
Start-of-Frame signal
TX0RTS 4 4 2 I Transmit buffer TXB0 request-to-send.
100 kinternal pull-up to V
DD
General purpose digital input.
100 kinternal pull-up to V
DD
TX1RTS 5 5 3 I Transmit buffer TXB1 request-to-send.
100 kinternal pull-up to V
DD
General purpose digital input.
100 kinternal pull-up to V
DD
TX2RTS 6 7 5 I Transmit buffer TXB2 request-to-send.
100 kinternal pull-up to V
DD
General purpose digital input.
100 kinternal pull-up to V
DD
OSC2 7 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
Node
Controller
MCP2515
XCVR
SPI
TX
RX
CANH
CANL
Node
Controller
MCP2515
XCVR
SPI
TX
RX
Node
Controller
MCP2515
XCVR
SPI
TX
RX