參數(shù)資料
型號: MCP25020-E/P
廠商: Microchip Technology
文件頁數(shù): 45/66頁
文件大?。?/td> 0K
描述: IC I/O EXPANDER CAN 8B 14DIP
標(biāo)準(zhǔn)包裝: 30
接口: CAN
輸入/輸出數(shù): 8
中斷輸出:
頻率 - 時鐘: 25MHz
電源電壓: 4.5 V ~ 5.5 V
工作溫度: -40°C ~ 125°C
安裝類型: 通孔
封裝/外殼: 14-DIP(0.300",7.62mm)
供應(yīng)商設(shè)備封裝: 14-PDIP
包裝: 管件
包括: 存儲器,PWM
配用: MCP2515DM-PCTL-ND - BOARD DEMO FOR MCP2515
DV250501-ND - KIT DEV CAN MCP250XX
其它名稱: MCP25020E/P
2007 Microchip Technology Inc.
DS21664D-page 5
MCP2502X/5X
2.0
CAN MODULE
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
receive buffers
One full-acceptance mask (standard and
extended)
Two full-acceptance filters (standard and
extended)
One filter for each receive buffer
Three prioritized transmit buffers for transmitting
predefined message types
Automatic wake-up on bus traffic function
Error management logic for transmit and receive
error states
Low-power SLEEP mode
FIGURE 2-1:
CAN MODULE
Acceptance Filter
RXF1
R
X
B
1
Identifier
Data Field
Identifier
M
A
B
Acceptance Mask
RXM
Acceptance Filter
RXF0
R
X
B
0
TXREQ
TXB2
ABTF
ML
OA
TXERR
M
ESSAGE
Message
Queue
Control
Transmit Byte Sequencer
TXREQ
TXB0
ABTF
ML
OA
TXERR
M
ESSAGE
CRC<14:0>
Comparator
Receive<7:0>
Transmit<7:0>
Receive
Error
Transmit
Error
Protocol
REC
TEC
ErrPas
BusOff
Finite
State
Machine
Counter
Shift<14:0>
{Transmit<5:0>, Receive<8:0>}
Transmit
Logic
Bit
Timing
Logic
TXCAN/TXRXCAN
RXCAN
Configuration
Registers
Clock
Generator
PROTOCOL
ENGINE
BUFFERS
TXREQ
TXB1
ABTF
ML
OA
TXERR
M
ESSAGE
A
c
e
p
t
A
c
e
p
t
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