MCP25055-I/P Microchip Technology, MCP25055-I/P Datasheet - Page 5

• Manufacturer Part Number: MCP25055-I/P
• Description: IC I/O EXPANDER CAN 8B 14DIP
• Manufacturer: Microchip Technology

Specifications of MCP25055-I/P

• Mounting Type: Through Hole
• Interface: 1-Wire, CAN
• Number Of I /o: 8
• Interrupt Output: No
• Frequency - Clock: 4MHz
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 14-DIP (0.300", 7.62mm)
• Includes: ADC, Memory, PWM
• Bus Frequency: 4MHz
• No. Of I/o's: 8
• Supply Voltage Range: 2.7V To 5.5V
• Digital Ic Case Style: DIP
• No. Of Pins: 14
• Operating Temperature Range: -40°C To +85°C
• Data Rate Max: 1Mbps
• Leaded Process Compatible: Yes
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: DV250501 - KIT DEV CAN MCP250XX
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: MCP25055I/P

2.0
The CAN module is a protocol controller that converts
between raw digital data and CAN message packets.
The main functional block of the CAN module is shown
in Figure 2-1 and consists of:
• CAN protocol engine
• Buffers, masks and filters
The module features include:
• Implementation of the CAN protocol
• Double-buffered receiver with two separate
FIGURE 2-1:
© 2007 Microchip Technology Inc.
Message
receive buffers
BUFFERS
PROTOCOL
ENGINE
Control
Queue
TXB0
CAN MODULE
TXCAN/TXRXCAN
Transmit
CAN MODULE
Logic
Transmit Byte Sequencer
{Transmit<5:0>, Receive<8:0>}
TXB1
Shift<14:0>
Transmit<7:0>
TXB2
Comparator
CRC<14:0>
A
c
c
e
p
t
• One full-acceptance mask (standard and
• Two full-acceptance filters (standard and
• One filter for each receive buffer
• Three prioritized transmit buffers for transmitting
• Automatic wake-up on bus traffic function
• Error management logic for transmit and receive
• Low-power SLEEP mode
R
X
B
0
Receive<7:0>
extended)
extended)
predefined message types
error states
Acceptance Filter
Data Field
Identifier
RXF0
Acceptance Mask
MCP2502X/5X
Timing
RXCAN
Logic
Bit
RXM
M
A
B
Acceptance Filter
Identifier
Data Field
RXF1
Transmit
Protocol
Machine
Receive
Counter
Counter
Configuration
Finite
Error
Error
State
Generator
Registers
Clock
DS21664D-page 5
ErrPas
BusOff
REC
TEC
R
X
B
1
A
c
c
e
p
t