l99pm62gxp STMicroelectronics, l99pm62gxp Datasheet - Page 32
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l99pm62gxp
Manufacturer Part Number
l99pm62gxp
Description
Power Management Ic With Lin And High Speed Can
Manufacturer
STMicroelectronics
Datasheet
1.L99PM62GXP.pdf
(102 pages)
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Detailed description
Note:
Figure 18. CAN wake up capabilities
Note:
32/102
Normal pattern wake up
Normal pattern wake up can occur when CAN pattern wake up option is enabled and the
CAN transceiver was set in standby mode while CAN bus was in recessive (high) state or
dominant (low) state. In order to wake up the L99PM62GXP, the following criteria must be
fulfilled:
●
●
●
Wake up from short to GND condition
Even if CAN pattern wake up option is enabled, but the CAN transceiver was set in standby
mode after a qualified permanent dominant state, recessive level at CAN, switches the
L99PM62GXP to active mode.
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
L99PM62GXP to active mode (after a filtering time of 2 µs).
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.
Pictures above illustrate the wake up behaviour from V
V
BAT
The CAN interface wake-up receiver must receive a series of two consecutive valid
dominant pulses, each of which must be longer than 2 µs
The distance between 2 pulses must be longer than 2 µs.
The two pulses must occur within a time frame of 1.0 ms
standby mode an NReset pulse is generated instead of the RXDL (Interrupt) signal.
Doc ID 17639 Rev 3
1
standby mode. For wake up from
L99PM62GXP