MCP25020-I/SL Microchip Technology, MCP25020-I/SL Datasheet - Page 5

• Manufacturer Part Number: MCP25020-I/SL
• Description: IC I/O EXPANDER CAN 8B 14SOIC
• Manufacturer: Microchip Technology

Specifications of MCP25020-I/SL

• Interface: CAN
• Number Of I /o: 8
• Interrupt Output: No
• Frequency - Clock: 4MHz
• Voltage - Supply: 2.75 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 14-SOIC (3.9mm Width), 14-SOL
• Includes: Memory, PWM
• Ic Interface Type: CAN, Serial
• No. Of Tx Buffers: 3
• No. Of Rx Buffers: 2
• No. Of Filters: 2
• No. Of Masks: 1
• Supply Voltage Range: 2.7V To 5.5V
• Digital Ic Case Style: SOIC
• No. Of Pins: 14
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: MCP2515DM-PCTL - BOARD DEMO FOR MCP2515
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: MCP25020I/SL

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