MCP2515-I/SO Microchip Technology, MCP2515-I/SO Datasheet - Page 17

• Manufacturer Part Number: MCP2515-I/SO
• Description: IC CAN CONTROLLER W/SPI 18SOIC
• Manufacturer: Microchip Technology

Specifications of MCP2515-I/SO

• Package / Case: 18-SOIC (7.5mm Width)
• Controller Type: CAN Interface
• Interface: SPI
• Voltage - Supply: 2.7 V ~ 5.5 V
• Current - Supply: 10mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Product: Controller Area Network (CAN)
• Number Of Transceivers: 1
• Data Rate: 1 Mbps
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.7 V
• Supply Current (max): 10 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Supply Voltage Range: 2.7V To 5.5V
• Driver Case Style: SOIC
• No. Of Pins: 18
• Operating Temperature Range: -40°C To +85°C
• Filter Terminals: SMD
• Supply Voltage Min: 2.7V
• Rohs Compliant: Yes
• Clock Frequency: 40MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: MCP2515DM-BM - BOARD DEMO FOR MCP2515/51MCP2515DM-PTPLS - BOARD DAUGHTER PICTAIL MCP2515MCP2515DM-PCTL - BOARD DEMO FOR MCP2515DV251001 - KIT DEVELOPMENT CAN MCP2510
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

FIGURE 3-1:
© 2010 Microchip Technology Inc.
The CANINTE.TXnIE bit
determines if an interrupt
should be generated when
a message is successfully
transmitted.
Generate
Interrupt
TRANSMIT MESSAGE FLOWCHART
Determine Highest Priority Message
Examine TXBnCTRL.TXP <1:0> to
No
Yes
Clear TxBnCTRL.TXREQ
to start transmission?
Message Transmitted
CANINTE.TXnIE=1?
TXBnCTRL.TXREQ
Clear:
TXBnCTRL.ABTF
TXBnCTRL.MLOA
TXBnCTRL.TXERR
CAN bus available
Transmit Message
CANTINF.TXnIF
GOTO START
Successfully?
Yes
Are any
bits = 1
Start
Was
Set
Is
?
Yes
No
Yes
No
No
The message transmission
sequence begins when the
device determines that the
TXBnCTRL.TXREQ for any of
the transmit registers has been
set.
Lost
Arbitration
TxB
Lost arbitration
Message error
N
TXBnCTRL.TXREQ=0
or CANCTRL.ABAT=1
CTRL.MLOA
Set
or
?
Clearing the TxBnCTRL.TXREQ bit
while it is set, or setting the CAN-
CTRL.ABAT bit before the message
has started transmission, will abort
the message.
is
?
Yes
Message
Error
CANINTE.MEERE?
TxBnCTRL.TXERR
CANTINF.MERRF
No
No
Set
Set
MCP2515
DS21801F-page 17
Generate
Yes
Interrupt