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參數(shù)資料
| 型號： | UJA1065 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | High-speed CAN/LIN fail-safe system basis chip |
| 中文描述： | 高速的CAN / LIN故障防護(hù)系統(tǒng)基礎(chǔ)芯片 |
| 文件頁數(shù)： | 10/67頁 |
| 文件大?。?/td> | 285K |
| 代理商： | UJA1065 |
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9397 750 14409
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Objective data sheet
Rev. 01 — 10 August 2005
10 of 67
Philips Semiconductors
UJA1065
High-speed CAN/LIN fail-safe system basis chip
Entering Normal mode does not activate the CAN transceiver automatically. The CAN
Mode Control (CMC) bit must be used to activate the CAN medium if required, allowing
local cyclic wake-up scenarios to be implemented without affecting the CAN-bus.
6.2.5
Standby mode
In Standby mode the system is set into a state with reduced current consumption.
Entering Standby mode automatically clears the CMC bit, allowing the CAN transceiver to
enter the low-power mode autonomously. The watchdog will, however, continue to monitor
the microcontroller (time-out mode) since it is powered via pin V1.
In the event that the host microcontroller can provide a low-power mode with reduced
current consumption in its standby or stop mode, the watchdog can be switched off
entirely in Standby mode of the SBC. The SBC monitors the microcontroller supply current
to ensure that there is no unobserved phase with disabled watchdog and running
microcontroller. The watchdog will remain active until the supply current drops below
I
thL(V1)
. Below this current limit the watchdog is disabled.
Should the current increase to I
thH(V1)
, e.g. as result of a microcontroller wake-up from
application specific hardware, the watchdog will start operating again with the previously
used time-out period. If needed, an interrupt can be issued when the watchdog restarts. If
the watchdog is not triggered correctly, a system reset will occur and the SBC will enter
Start-up mode.
If Standby mode is entered from Normal mode with the selected watchdog OFF option,
the watchdog will use the maximum time-out as defined for Standby mode until the supply
current drops below the current detection threshold; the watchdog is now OFF. If the
current increases again, the watchdog is immediately activated, again using the maximum
watchdog time-out period. If the watchdog OFF option is selected during Standby mode,
the last used watchdog period will define the time for the supply current to fall below the
current detection threshold. This allows the user to align the current supervisor function to
the application needs.
Generally, the microcontroller can be activated from Standby mode via a system reset or
via an interrupt without reset. This allows implementation of differentiated start-up
behavior from Standby mode, depending on the application needs:
If the watchdog is still running during Standby mode, the watchdog can be used for
cyclic wake-up behavior of the system. A dedicated Watchdog Time-out Interrupt
Enable (WTIE) bit enables the microcontroller to decide whether to receive an
interrupt or a hardware reset upon overflow. The interrupt option will be cleared in
hardware automatically with each watchdog overflow to ensure that a failing main
routine is detected while the interrupt service still operates. So the application
software must set the interrupt behavior each time before a standby cycle is entered.
Any wake-up via the CAN-bus or the LIN-bus together with a local wake-up event will
force a system reset event or an interrupt to the microcontroller. So it is possible to exit
Standby mode without any system reset if required.
When an interrupt event occurs the application software has to read the Interrupt register
within t
RSTN(INT)
. Otherwise a fail-safe system reset is forced and Start-up mode will be
entered. If the application has read out the Interrupt register within the specified time, it
can decide whether to switch into Normal mode via an SPI access or to stay in Standby
mode.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UJA1065TW | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:High-speed CAN/LIN fail-safe system basis chip |
| UJA1065TW/3V0 | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC HI SPEED CAN SYSTEM 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 |
| UJA1065TW/3V0,512 | 功能描述:CAN 接口集成電路 HI SPEED CAN SYSTEM RoHS:否 制造商:Texas Instruments 類型:Transceivers 工作電源電壓:5 V 電源電流: 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:SOIC-8 封裝:Tube |
| UJA1065TW/3V0,518 | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC HI SPEED CAN SYSTEM 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 |
| UJA1065TW/3V0512 | 制造商:NXP Semiconductors 功能描述:CONTROLLER SYS CAN/LIN 3V 32HTSSOP |
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