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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)： | 9/67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
9 of 67
Philips Semiconductors
UJA1065
High-speed CAN/LIN fail-safe system basis chip
6.2.1
Start-up mode
Start-up mode is the ‘home page’ of the SBC. This mode is entered when battery and
ground are connected for the first time. Start-up mode is also entered after any event that
results in a system reset. The reset source information is provided by the SBC to support
different software initialization cycles that depend on the reset event.
It is also possible to enter Start-up mode via a wake-up from Standby mode, Sleep mode
or Fail-safe mode. Such a wake-up can originate either from the CAN-bus, the LIN-bus or
from the local WAKE pin.
On entering Start-up mode a lengthened reset time t
RSTNL
is observed. This reset time is
either user defined (via the RLC bit in the System Configuration register) or defaults to the
value as given in
Section 6.13.12
. During the reset lengthening time pin RSTN is held
LOW by the SBC.
When the reset time is completed (pin RSTN is released and goes HIGH) the watchdog
timer will wait for initialization. If the watchdog initialization is successful, the selected
operating mode (Normal mode or Flash mode) will be entered. Otherwise the Restart
mode will be entered.
6.2.2
Restart mode
The purpose of the Restart mode is to give the application a second chance to start up,
should the first attempt from Start-up mode fail. Entering Restart mode will always set the
reset lengthening time t
RSTNL
to the higher value to guarantee the maximum reset length,
regardless of previous events.
If start-up from Restart mode is successful (the previous problems do not reoccur and
watchdog initialization is successful), then the selected operating mode will be entered.
From Restart mode this must be Normal mode. If problems persist or if V1 fails to start up,
then Fail-safe mode will be entered.
6.2.3
Fail-safe mode
Severe fault situations will cause the SBC to enter Fail-safe mode. Fail-safe mode is also
entered if start-up from Restart mode fails. Fail-safe mode offers the lowest possible
system power consumption from the SBC and from the external components controlled by
the SBC.
A wake-up (via the CAN-bus, the LIN-bus or the WAKE pin) is needed to leave Fail-safe
mode. This is only possible if the on-chip oscillator is running correctly. The SBC restarts
from Fail-safe mode with a defined delay t
ret
, to guarantee a discharged V1 before
entering Start-up mode. Regulator V1 will restart and the reset lengthening time t
RSTNL
is
set to the higher value; see
Section 6.5.1
.
6.2.4
Normal mode
Normal mode gives access to all SBC system resources, including CAN, LIN, INH/LIMP
and EN. Therefore in Normal mode the SBC watchdog runs in (programmable) window
mode, for strictest software supervision. Whenever the watchdog is not properly served a
system reset is performed.
Interrupts from SBC to the host microcontroller are also monitored. A system reset is
performed if the host microcontroller does not respond within t
RSTN(INT)
.
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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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