MCP2510-E/P Microchip Technology, MCP2510-E/P Datasheet - Page 52

• Manufacturer Part Number: MCP2510-E/P
• Description: IC CAN CTLR EXTENDED TEMP 18DIP
• Manufacturer: Microchip Technology

Specifications of MCP2510-E/P

• Controller Type: CAN Interface
• Interface: SPI
• Voltage - Supply: 4.5 V ~ 5.5 V
• Current - Supply: 10mA
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Through Hole
• Package / Case: 18-DIP (0.300", 7.62mm)
• No. Of Tx Buffers: 3
• No. Of Rx Buffers: 2
• No. Of Filters: 6
• No. Of Masks: 2
• No. Of Interrupts: 1
• Supply Voltage Range: 3V To 5.5V
• Digital Ic Case Style: DIP
• No. Of Pins: 18
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: DV251001 - KIT DEVELOPMENT CAN MCP2510
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: MCP2510-E/PR; MCP2510-E/PR

MCP2510
counters are reset and deactivated in this state. The lis-
ten-only mode is activated by setting the mode request
bits in the CANCTRL register.
9.4
This mode will allow internal transmission of messages
from the transmit buffers to the receive buffers without
actually transmitting messages on the CAN bus. This
mode can be used in system development and testing.
In this mode the ACK bit is ignored and the device will
allow incoming messages from itself just as if they were
coming from another node. The loopback mode is a
silent mode, meaning no messages will be transmitted
while in this state, including error flags or acknowledge
signals. The TXCAN pin will be in a reccessive state
while the device is in this mode. The filters and masks
can be used to allow only particular messages to be
loaded into the receive registers. The masks can be set
to all zeros to provide a mode that accepts all mes-
sages. The loopback mode is activated by setting the
mode request bits in the CANCTRL register.
REGISTER 9-1:
DS21291F-page 52
Loopback Mode
bit 7-5
bit 4
bit 3
bit 2
bit 1-0
CANCTRL - CAN CONTROL REGISTER (ADDRESS: XFh)
bit 7
REQOP<2:0>: Request Operation Mode
000 = Set Normal Operation Mode
001 = Set Sleep Mode
010 = Set Loopback Mode
011 = Set Listen Only Mode
100 = Set Configuration Mode
All other values for REQOP bits are invalid and should not be used
ABAT: Abort All Pending Transmissions
1 = Request abort of all pending transmit buffers
0 = Terminate request to abort all transmissions
Unimplemented: Read as '0'
CLKEN: CLKOUT Pin Enable
1 = CLKOUT pin enabled
0 = CLKOUT pin disabled (Pin is in high impedance state)
CLKPRE <1:0>: CLKOUT Pin Prescaler
00 = F
01 = F
10 = F
11 = F
Legend:
R = Readable bit
-n = Value at POR
REQOP2
R/W-1
Note:
CLKOUT
CLKOUT
CLKOUT
CLKOUT
On power up, REQOP = b’111’
REQOP1
R/W-1
= System Clock/1
= System Clock/2
= System Clock/4
= System Clock/8
REQOP0
R/W-1
W = Writable bit
’1’ = Bit is set
R/W-0
ABAT
9.5
This is the standard operating mode of the MCP2510.
In this mode the device actively monitors all bus mes-
sages and generates acknowledge bits, error frames,
etc. This is also the only mode in which the MCP2510
will transmit messages over the CAN bus.
Normal Mode
U = Unimplemented bit, read as ‘0’
’0’ = Bit is cleared
U-0
—
CLKEN
R/W-1
© 2007 Microchip Technology Inc.
CLKPRE1 CLKPRE0
x = Bit is unknown
R/W-1
R/W-1
bit 0