參數(shù)資料
型號(hào)： MCP2515T-E/ST
廠商： Microchip Technology
文件頁(yè)數(shù)： 32/88頁(yè)
文件大?。?/td> 0K
描述： IC CAN CONTROLLER W/SPI 20TSSOP
標(biāo)準(zhǔn)包裝： 2,500
控制器類型： CAN 接口
接口： SPI 串行
電源電壓： 2.7 V ~ 5.5 V
電流 - 電源： 10mA
工作溫度： -40°C ~ 125°C
安裝類型： 表面貼裝
封裝/外殼： 20-TSSOP（0.173"，4.40mm 寬）
供應(yīng)商設(shè)備封裝： 20-TSSOP
包裝： 帶卷 (TR)
配用： MCP2515DM-BM-ND - BOARD DEMO FOR MCP2515/51
MCP2515DM-PTPLS-ND - BOARD DAUGHTER PICTAIL MCP2515
MCP2515DM-PCTL-ND - BOARD DEMO FOR MCP2515
DV251001-ND - KIT DEVELOPMENT CAN MCP2510
MCP2515
DS21801F-page 38
2010 Microchip Technology Inc.
PROPAGATION SEGMENT
The
Propagation
Segment
(PropSeg)
exists
to
compensate for physical delays between nodes. The
propagation delay is defined as twice the sum of the
signal’s propagation time on the bus line, including the
delays associated with the bus driver. The PropSeg is
programmable from 1 – 8 TQ.
PHASE SEGMENT 1 (PS1) AND PHASE
SEGMENT 2 (PS2)
The two phase segments, PS1 and PS2, are used to
compensate for edge phase errors on the bus. PS1 can
be lengthened (or PS2 shortened) by resyncronization.
PS1 is programmable from 1 – 8 TQ and PS2 is
programmable from 2 – 8 TQ.
SAMPLE POINT
The sample point is the point in the bit time at which the
logic level is read and interpreted. The sample point is
located at the end of PS1. The exception to this rule is
if the sample mode is configured to sample three times
per bit. In this case, while the bit is still sampled at the
end of PS1, two additional samples are taken at one-
half TQ intervals prior to the end of PS1, with the value
of the bit being determined by a majority decision.
INFORMATION PROCESSING TIME
The Information Processing Time (IPT) is the time
required for the logic to determine the bit level of a
sampled bit. The IPT begins at the sample point, is
measured in TQ and is fixed at 2 TQ for the Microchip
CAN module. Since PS2 also begins at the sample
point and is the last segment in the bit time, it is
required that the PS2 minimum is not less than the IPT.
Therefore:
SYNCHRONIZATION JUMP WIDTH
The Synchronization Jump Width (SJW) adjusts the bit
clock as necessary by 1 – 4 TQ (as configured) to
maintain
synchronization
with
the
transmitted
message. Synchronization is covered in more detail
later in this data sheet.
Time Quantum
Each of the segments that make up a bit time are made
up of integer units called Time Quanta (TQ). The length
of each Time Quantum is based on the oscillator period
(tOSC). The base TQ equals twice the oscillator period.
Figure 5-2 shows how the bit period is derived from
TOSC and TQ. The TQ length equals one TQ clock
period (tBRPCLK), which is programmable using a
programmable
prescaler,
called
the
Baud
Rate
Prescaler (BRP). This is illustrated in the following
equation:
EQUATION 5-2:
FIGURE 5-2:
TQ AND THE BIT PERIOD
PS2
min
IPT
2TQ
==
TQ
2 BRP T
OSC
2BRP
F
OSC
-------------------
==
Where: BRP equals the configuration as shown in
tOSC
TBRPCLK
tBIT
Sync
(fixed)
PropSeg
(Programmable)
PS2
(Programmable)
PS1
(Programmable)
TQ
(tTQ)
CAN Bit Time
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MCP2515T-I/M 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:Stand-Alone CAN Controller with SPI Interface
MCP2515T-I/ML 功能描述:網(wǎng)絡(luò)控制器與處理器 IC CAN controller with SPI interface RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
MCP2515T-I/SO 功能描述:網(wǎng)絡(luò)控制器與處理器 IC W/ SPI Interface RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
MCP2515T-I/SO-CUT TAPE 制造商:Microchip 功能描述:MCP2515 Series 5.5 V 1 Mb/s Stand Alone SPI Interface CAN Controller- SOIC-18
MCP2515T-I/ST 功能描述:網(wǎng)絡(luò)控制器與處理器 IC W/ SPI Interface RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
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