MCP2515-I/ST Microchip Technology, MCP2515-I/ST Datasheet - Page 24
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MCP2515-I/ST
Manufacturer Part Number
MCP2515-I/ST
Description
IC CAN CONTROLLER W/SPI 20TSSOP
Manufacturer
Microchip Technology
Specifications of MCP2515-I/ST
Package / Case
20-TSSOP
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
TSSOP
No. Of Pins
20
Operating Temperature Range
-40°C To +85��C
Filter Terminals
SMD
Supply Voltage Min
2.7V
Rohs Compliant
Yes
Interface Type
SPI
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MCP2515-I/ST
Manufacturer:
HYNIX
Quantity:
7 600
Company:
Part Number:
MCP2515-I/ST
Manufacturer:
MICROCHI
Quantity:
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Company:
Part Number:
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Manufacturer:
MICROCHI
Quantity:
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Part Number:
MCP2515-I/ST
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
MCP2515
4.3
If enabled, the Start-Of-Frame (SOF) signal is
generated on the SOF pin at the beginning of each
CAN message detected on the RXCAN pin.
The RXCAN pin monitors an idle bus for a recessive-
to-dominant edge. If the dominant condition remains
until the sample point, the MCP2515 interprets this as
a SOF and a SOF pulse is generated. If the dominant
condition does not remain until the sample point, the
MCP2515 interprets this as a glitch on the bus and no
SOF signal is generated. Figure 4-1 illustrates SOF
signalling and glitch filtering.
As with One-shot mode, one use for SOF signaling is
for TTCAN type systems. In addition, by monitoring
both the RXCAN pin and the SOF pin, an MCU can
detect early physical bus problems by detecting small
glitches before they affect the CAN communications.
4.4
In addition to the INT pin, which provides an interrupt
signal to the MCU for many different conditions, the
receive buffer full pins (RX0BF and RX1BF) can be
used to indicate that a valid message has been loaded
into RXB0 or RXB1, respectively. The pins have three
different configurations (Register 4-1):
1.
2.
3.
FIGURE 4-1:
DS21801B-page 24
Disabled
Buffer Full Interrupt
Digital Output
Start-of-Frame Signal
RX0BF and RX1BF Pins
RXCAN
RXCAN
Normal SOF Signaling
Glitch Filtering
SOF
SOF
START-OF-FRAME SIGNALING
EXPECTED START-OF-FRAME BIT
START-OF-FRAME BIT
Expected
Preliminary
Sample
Point
Sample
Point
4.4.1
The RXBnBF pins can be disabled to the high-
impedance state by clearing BFPCTRL.BnBFE.
4.4.2
The RXBnBF pins can be configured to act as buffer full
interrupt
Configuration and status of these pins is available via
the BFPCTRL register (Register 4-3). When set to
operate in Interrupt mode (by setting BFPCTRL.BxBFE
and BFPCTRL.BxBFM bits), these pins are active-low
and are mapped to the CANINTF.RXnIF bit for each
receive buffer. When this bit goes high for one of the
receive buffers, indicating that a valid message has
been loaded into the buffer, the corresponding
RXBnBF pin will go low. When the CANINTF.RXnIF bit
is cleared by the MCU, the corresponding interrupt pin
will go to the logic-high state until the next message is
loaded into the receive buffer.
pins
DISABLED
CONFIGURED AS BUFFER FULL
or
BUS IDLE
as
2003 Microchip Technology Inc.
standard
ID BIT
digital
outputs.