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參數(shù)資料
| 型號(hào)： | SJA1000 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | Stand-alone CAN controller(單機(jī)CAN控制器) |
| 中文描述： | 2 CHANNEL(S), 1M bps, LOCAL AREA NETWORK CONTROLLER, PDIP28 |
| 封裝： | 0.600 INCH, PLASTIC, DIP-28 |
| 文件頁數(shù)： | 30/68頁 |
| 文件大小： | 234K |
| 代理商： | SJA1000 |
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2000 Jan 04
30
Philips Semiconductors
Product specification
Stand-alone CAN controller
SJA1000
Notes
1.
When the transmit error counter exceeds the limit of 255, the bus status bit is set to logic 1 (bus-off), the
CAN controller will set the reset mode bit to logic 1 (present) and an error warning interrupt is generated, if enabled.
The transmit error counter is set to 127 and the receive error counter is cleared. It will stay in this mode until the CPU
clears the reset mode bit. Once this is completed the CAN controller will wait the minimum protocol-defined time
(128 occurrences of the bus-free signal) counting down the transmit error counter. After that the bus status bit is
cleared (bus-on), the error status bit is set to logic 0 (ok), the error counters are reset and an error warning interrupt
is generated, if enabled. Reading the TX error counter during this time gives information about the status of the
bus-off recovery.
Errors detected during reception or transmission will effect the error counters according to the CAN 2.0B protocol
specification. The error status bit is set when at least one of the error counters has reached or exceeded the CPU
warning limit (EWLR). An error warning interrupt is generated, if enabled. The default value of EWLR after hardware
reset is 96.
If both the receive status and the transmit status bits are logic 0 (idle) the CAN-bus is idle. If both bits are set the
controller is waiting to become idle again. After a hardware reset 11 consecutive recessive bits have to be detected
until the idle status is reached. After bus-off this will take 128 of 11 consecutive recessive bits.
The transmission complete status bit is set to logic 0 (incomplete) whenever the transmission request bit or the self
reception request bit is set to logic 1. The transmission complete status bit will remain at logic 0 until a message is
transmitted successfully.
If the CPU tries to write to the transmit buffer when the transmit buffer status bit is logic 0 (locked), the written byte
will not be accepted and will be lost without this being indicated.
When a message that is to be received has passed the acceptance filter successfully, the CAN controller needs
space in the RXFIFO to store the message descriptor and for each data byte which has been received. If there is not
enough space to store the message, that message is dropped and the data overrun condition is indicated to the CPU
at the moment this message becomes valid. If this message is not completed successfully (e.g. due to an error), no
overrun condition is indicated.
After reading all messages within the RXFIFO and releasing their memory space with the command release receive
buffer this bit is cleared.
2.
3.
4.
5.
6.
7.
SR.1
DOS
Data Overrun Status;
note 6
1
overrun; a message was lost because there was
not enough space for that message in the RXFIFO
absent; no data overrun has occurred since the
last clear data overrun command was given
full; one or more complete messages are available
in the RXFIFO
empty; no message is available
0
SR.0
RBS
Receive Buffer Status;
note 7
1
0
BIT
SYMBOL
NAME
VALUE
FUNCTION
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| SK016R | SCRs |
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| SK008D | Box-shaped pin header, Discrete wire crimping connection, Discrete wire connectors; HRS No: 543-0505-6 00; No. of Positions: 12; Connector Type: Wire; Contact Gender: Female; Contact Spacing (mm): 2; Terminal Pitch (mm): 2; Current Rating(Amps)(Max.): 2; Operating Temperature Range (degrees C): -30 to 85; General Description: Housing; For Discrete wire; Crimping |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SJA1000/N1,112 | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC STAND-ALONE CAN CONTROLLER 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 |
| SJA1000/N1112 | 制造商:NXP Semiconductors 功能描述:IC CAN CONTROLLER 1000 DIP28 |
| SJA1000N | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Stand-alone CAN controller |
| SJA1000T | 制造商:NXP Semiconductors 功能描述: |
| SJA1000T/N,112 | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC STAND ALONE CAN CONTROLLER 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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