MCP2515
FIGURE 1-2:
EXAMPLE SYSTEM IMPLEMENTATION
Node
Controller
SPI™
Node
Controller
SPI
Node
Controller
SPI
MCP2515
TX
XCVR
RX
MCP2515
TX
XCVR
RX
MCP2515
TX
XCVR
RX
CANH
CANL
TABLE 1-1:
Name
TXCAN
RXCAN
CLKOUT
TX0RTS
TX1RTS
TX2RTS
OSC2
OSC1
V
SS
RX1BF
RX0BF
INT
SCK
SI
SO
CS
RESET
V
DD
NC
Note:
PINOUT DESCRIPTION
I/O/P
Type
O
I
O
I
I
I
O
I
P
O
O
O
I
I
O
I
I
P
—
Description
Transmit output pin to CAN bus
Receive input pin from CAN bus
Clock output pin with programmable
prescaler
—
—
Start-of-Frame signal
Alternate Pin Function
PDIP/SOIC TSSOP
Pin #
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
—
1
2
3
4
5
7
8
9
10
11
12
13
14
16
17
18
19
20
6,15
Transmit buffer TXB0 request-to-send. General purpose digital input.
100 kΩ internal pull-up to V
DD
100 kΩ internal pull-up to V
DD
Transmit buffer TXB1 request-to-send. General purpose digital input.
100 kΩ internal pull-up to V
DD
100 kΩ internal pull-up to V
DD
Transmit buffer TXB2 request-to-send. General purpose digital input.
100 kΩ internal pull-up to V
DD
100 kΩ internal pull-up to V
DD
Oscillator output
Oscillator input
—
External clock input
Ground reference for logic and I/O pins —
Receive buffer RXB1 interrupt pin or
general purpose digital output
Receive buffer RXB0 interrupt pin or
general purpose digital output
Interrupt output pin
Clock input pin for SPI™ interface
Data input pin for SPI interface
Data output pin for SPI interface
Chip select input pin for SPI interface
Active low device reset input
Positive supply for logic and I/O pins
No internal connection
General purpose digital output
General purpose digital output
—
—
—
—
—
—
—
Type Identification: I = Input; O = Output; P = Power
DS21801D-page 4
Preliminary
©
2005 Microchip Technology Inc.
MICROCHIP [ MICROCHIP TECHNOLOGY ]
