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參數資料
| 型號： | MCZ33742EG |
| 廠商： | Freescale Semiconductor |
| 文件頁數： | 36/71頁 |
| 文件大小： | 0K |
| 描述： | IC SYSTEM BASIS CHIP CAN 28-SOIC |
| 標準包裝： | 26 |
| 應用： | 自動 |
| 電流 - 電源： | 42mA |
| 電源電壓： | 5.5 V ~ 18 V |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 28-SOIC（0.295"，7.50mm 寬） |
| 供應商設備封裝： | 28-SOIC W |
| 包裝： | 管件 |
| 產品目錄頁面： | 808 (CN2011-ZH PDF) |
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Analog Integrated Circuit Device Data
Freescale Semiconductor
41
33742
FUNCTIONAL DEVICE OPERATION
OPERATIONAL MODES
Figure 22. CAN Bus Signal During Can Sleep State and Wake-up Sequence
Figure 23 illustrates how the wake-up signal is generated. First the CAN signal is detected by a low consumption receiver (WU
receiver). Then the signal passes through a pulse width filter, which discards the undesired pulses. The pulse must have a width
bigger than 0.5
s and smaller than 500 s to be accepted. When a pulse is discarded, the pulse counter is reset and no wake-
up signal is generated. When a pulse is accepted, the pulse counter is incremented and, after three pulses, the internal wake-up
signal is asserted.
Each one of the pulses must be spaced by no more than 500
s. If not, the counter will be reset and no wake-up signal will be
generated. This is accomplished by the wake-up timeout generator. The wake-up cycle is completed (and the wake-up flag reset)
when the CAN interface is brought to CAN Normal mode.
Figure 23. Wake-up Functional Block Diagram
CAN WAKE-UP REPORT
The CAN wake-up reporting depend upon the low power mode the SBC is in.
If the SBC is placed into Sleep mode (VDD and V2 off), the CAN wake-up or any wake-up results in the VDD regulator turning
on, leading to turning on the MCU supply and releasing reset. If the 33742 is in Stop mode (V2 off and VDD active), the CAN
wake-up or any wake-up is signalled by a pulse on the INT output. In addition the CANWU bit is set in the CAN register.
If the SBC is in Normal or Standby mode and the CAN interface is in Sleep mode with wake-up enabled, the CAN wake-up is
reported by the CANWU bit in the CAN register.
In the event the SBC is in Normal mode and CAN Sleep mode with wake-up enabled, it is recommended that the user check
for the CANWU bit prior to placing the 33742 in Sleep or Stop mode in case bus traffic has occurred while the CAN interface was
in Sleep mode.
CANL
CANH
TXD
RXD
Ground
2.5 V
CANL Dominant
CANH Dominant
CANL/CANH Recessive
CAN in TXRX Mode
CAN in Sleep Mode (Wake-up Enable)
Incoming CAN Message
CANL Dominant
CANH Dominant
CANL Dominant
CANH Dominant
CANL Dominant
CANH Dominant
WU Receiver
Internal Wake-up Signal
Min 500 ns
Max 500
s
CAN Bus Sleep State
Pulse # 1
Pulse # 2
Pulse # 3
+
Internal Wake-up
Latch
RST
Timeout
RST
Counter
Pulse OK
Narrow
Pulse
Pulse Width
Filter
Timeout
Generator
Standby
WU Receiver
CANH
CANL
Signal
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相關代理商/技術參數 |
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| MCZ33742EGR2 | 功能描述:網絡控制器與處理器 IC SBC-E-HS-CAN RoHS:否 制造商:Micrel 產品:Controller Area Network (CAN) 收發器數量: 數據速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| MCZ33742SEG | 功能描述:網絡控制器與處理器 IC SBC-E-HS-CAN RoHS:否 制造商:Micrel 產品:Controller Area Network (CAN) 收發器數量: 數據速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| MCZ33742SEGR2 | 功能描述:網絡控制器與處理器 IC SBC-E-HS-CAN RoHS:否 制造商:Micrel 產品:Controller Area Network (CAN) 收發器數量: 數據速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| MCZ33780EG | 功能描述:多路器開關 IC DBUS MASTER RoHS:否 制造商:Texas Instruments 通道數量:1 開關數量:4 開啟電阻（最大值）:7 Ohms 開啟時間（最大值）: 關閉時間（最大值）: 傳播延遲時間:0.25 ns 工作電源電壓:2.3 V to 3.6 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UQFN-16 |
| MCZ33780EG | 制造商:Freescale Semiconductor 功能描述:DUAL DBUS MASTER INTERFACE 16SOIC |
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