參數(shù)資料
型號(hào)： MCZ33989EG
廠(chǎng)商： 飛思卡爾半導(dǎo)體(中國(guó))有限公司
元件分類(lèi)： CAN
英文描述： System Basis Chip with High-Speed CAN Transceiver
中文描述： 系統(tǒng)基礎(chǔ)芯片高高速CAN收發(fā)器
文件頁(yè)數(shù)： 41/66頁(yè)
文件大?。?/td> 1181K
代理商： MCZ33989EG
Analog Integrated Circuit Device Data
Freescale Semiconductor
41
33989
TYPICAL APPLICATIONS
SUPPLEMENTAL APPLICATION NOTES
Failure on VDD1, Watchdog, Reset, INT Pins
The paragraphs below describe the behavior of the device
and of the INT, RST, and WD pins at power up and under
failure of VDD1.
Power Up and SBC Entering Normal Operation
After a power-up the SBC enters in Normal request mode
(CAN interface is in TX/RX mode): V
DD1
is on, V2 is off. After
350 ms if no watchdog is written (no TIM1 register write) a
reset occurs, and the SBC returns to normal request
mode.During this sequence WD is active (low level).
Once watchdog is written the SBC goes to normal mode:
V
DD1
is still on and V2 turns on, WD is no longer active and
the reset pin is high. If the watchdog is not refreshed, the SBC
generates a reset and returns to Normal request mode.
Figure 23. Power Up and SBC Entering Normal Operation
Power Up and V
DD1
Going Low with Stop Mode as
Default Low Power Mode Selected
The first part of the following figure is identical to the
above. If V
DD1
is pulled below the V
DD1
under voltage reset
(typ 4.6 V) for instance by an overcurrent or short circuit (ex
short to 4 V), and if a low power mode previously selected
was stop mode, the SBC enters reset mode (reset pin is
active). The pin WD stays high, but the high level (V
OH
)
follows the V
DD1
level. The interrupt pin goes low.
When the V
DD1
overload condition is removed, the SBC
restarts in Normal request mode.
Figure 24. Power Up and V
DD1
Going Low with Stop Mode as Default Low Power Mode Selected
VDD1
SPI (CS)
INT
WD
RST
SBC in
RESET
mode
SBC in Normal request
mode
SBC in Normal
mode
SBC in Normal
request mode
SBC in Normal
mode
350 ms
Reset every 350 ms
Write Watchdog each X ms
No Watchdog is written
SBC in Normal request
mode
SBC in Normal
mode
SBC in Reset
mode
SBC in Normal
Request mode
350 ms
SBC in
RESET
mode
350 ms
VDD1
SPI (CS)
INT
WD
RST
Reset every 350 ms
No problem on
Watchdog period
Write Watchdog
each X ms
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MCZ33989EG 制造商:Freescale Semiconductor 功能描述:IC SYSTEM BASIS W/CAN TRANCEIVER
MCZ33989EGR2 功能描述:網(wǎng)絡(luò)控制器與處理器 IC SBC-HS 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
MCZ33990EF 功能描述:網(wǎng)絡(luò)控制器與處理器 IC CLASS B SERIAL TRANS. 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
MCZ33990EF 制造商:Freescale Semiconductor 功能描述:TRANCEIVER J-1850 CLASS B 8SOIC
MCZ33990EF/R2 制造商:FREESCALE 制造商全稱(chēng):Freescale Semiconductor, Inc 功能描述:Enhanced Class B Serial Transceiver
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