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MM912F634CV2AP 데이터시트(PDF) 55 Page - Freescale Semiconductor, Inc

부품명 MM912F634CV2AP
상세설명  Integrated S12 Based Relay Driver with LIN
PDF  335 Pages
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제조업체  FREESCALE [Freescale Semiconductor, Inc]
홈페이지  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MM912F634CV2AP 데이터시트(HTML) 55 Page - Freescale Semiconductor, Inc

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Functional Description and Application Information
Modes of Operation
MM912F634
Freescale Semiconductor
55
4.3
Modes of Operation
The MM912F634 analog die offers three main operating modes: Normal (Run), Stop, and Sleep. In Normal mode, the device is
active and is operating under normal application conditions. In Stop mode, the voltage regulator operates with limited current
capability, the external load is expected to be reduced while in Stop mode. In Sleep mode both voltage regulators are turned off
(VDD =VDDX =0V).
Wake-up from Stop mode is indicated by an interrupt signal. Wake-up from Sleep mode will change the MM912F634 analog die
into reset mode while the voltage regulator is turned back on.
The selection of the different modes is controlled by the Mode Control Register (MCR).
Figure 16 describes how transitions are done between the different operating modes.
Figure 16. Modes of Operation and Transitions
4.3.1
Power Down Mode
For the device power (VS1) below VPOR, the MM912F634 analog die is virtually in Power Down mode. Once VS1>VPOR, the
MM912F634 analog die will enter Reset mode with the condition “Power On Reset - POR”.
4.3.2
Reset Mode
The MM912F634 analog die enters Reset mode if a reset condition occurs (POR - Power On Reset, LVR- Low Voltage Reset,
Low Voltage VDDX Reset - LVRX, WDR - Watchdog Reset, EXR - External Reset, and WUR - Wake-up Sleep Reset).
Power
Down
Reset
Normal
Mode
Stop
Mode
Sleep
Mode
Power Up
(POR = 1)
VDD High and Reset
Delay (tRST) expired
Wake Up
Wake Up
External or
Internal Reset
Power Down
(VSUP<VPOR)
WatchDog Time-Out1,
External or Internal Reset
Stop
Command
Sleep
Command
1) Initial WD to be served within tWDTO to enable Window WD
VDD Low and VSUV = 0
and Delay (tVTO) expired
Power Down
(VSUP<VPOR)



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