Datasheet

MCP2515
DS20001801J-page 4  2003-2019 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
V
SS
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 —
V
DD
18 20 18 P Positive supply for logic and I/O pins —
NC — 6,15 4,13 — No internal connection —
EP — — 21 — Exposed Thermal Pad, connect to
V
SS
.
—
Legend: I = Input; O = Output; P = Power
XCVR
SPI
TX RX
CANH
CANL
XCVR
SPI
TX RX
XCVR
SPI
TX RX
Node
Controller
MCP2515
Node
Controller
MCP2515
Node
Controller
MCP2515