參數(shù)資料
型號(hào)： L99PM62XP
廠商： STMICROELECTRONICS
元件分類(lèi)： 電源管理
英文描述： 4-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO36
封裝： ROHS COMPLIANT, POWERSSO-36
文件頁(yè)數(shù)： 25/98頁(yè)
文件大?。?/td> 1117K
代理商： L99PM62XP
L99PM62XP
Description
Doc ID 16363 Rev 2
No pattern wake up
If the CAN pattern wake up option is disabled, any transition either dominant (low) state to
recessive (high) state or recessive (high) state to dominant (low) state switches the
L99PM62XP to active mode (after a filtering time of 2 s).
Note:
A wake up caused by a message on the bus starts the voltage regulator and the
microcontroller to switch the application back to normal operation mode.
Figure 18. CAN wake up capabilities
Note:
Pictures above illustrate the wake up behaviour from V1 standby mode. For wake up from
VBAT standby mode the NRESET signal (with 2 ms timing) is generated instead of the RXDL
(Interrupt) signal.
2.9.3
CAN sleep mode
During active mode it is possible to deactivate the CAN transceiver with a dedicated SPI
command (CR4, CAN_act = 0). The CAN transceiver remains deactivated until it is activated
again. With a deactivated CAN the receiver input termination network is disconnected from
the bus and the CANH, CANL bus lines is driven to GND. The SPLIT output is also
deactivated in this case.
2.9.4
CAN receive only mode
With the CAN_rec_only bit in control register 4 it is possible to disable the CAN transmitter in
active mode. In this mode it is possible to listen to the bus but not sending to it. The receiver
termination network is still activated in this mode.
No pattern Wake up
Pattern Wake up
ACTIVE
STANDBY
ACTIVE
CANRX
STATE
> 2 us
< 1ms
Standard can pattern wakeup
ACTIVE
STANDBY
ACTIVE
CANRX
STATE
> 2 us
< 1ms
CAN pattern wake up with dominant before Standby
ACTIVE
STANDBY
ACTIVE
CANRX
STATE
> permannent dominant filter time
> 2 us
CAN pattern wake up with permanent dominant
ACTIVE
STANDBY
ACTIVE
CANRX
STATE
> 4 us
Standard wakeup
ACTIVE
STANDBY
ACTIVE
CANRX
STATE
> permannent
dominant filter time
> 2 us
CAN wake up with permanent dominant
ACTIVE
STANDBY
ACTIVE
CANRX
STATE
> 4 us
CAN wake up with dominant before Standby
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