l99pm62gxp STMicroelectronics, l99pm62gxp Datasheet - Page 29

• Manufacturer Part Number: l99pm62gxp
• Description: Power Management Ic With Lin And High Speed Can
• Manufacturer: STMicroelectronics

L99PM62GXP
Note:
2.8.1
2.8.2
Note:
In order to further reduce the current consumption in standby mode, the integrated LIN bus
interface offers an ultra low current consumption.
Use of master pull-up switch is optional.
Error handling
The L99PM62GXP provides the following 3 error handling features which are not described
in the LIN Spec. V
controllers to switch the application back to normal operation mode.
At V
transmitter is disabled in case of the following errors:
●
●
●
●
●
Dominant TxDL time out
If TXDL is in dominant state (low) for more than 12 ms (typ) the transmitter is disabled, the
status bit is latched and can be read and optionally cleared by SPI. The transmitter remains
disabled until the status register is cleared. This feature can be disabled via SPI.
Permanent recessive
If TXDL changes to dominant (low) state but RXDL signal does not follow within 40 µs the
transmitter is disabled, the status bit is latched and can be read and optionally cleared by
SPI. The transmitter remains disabled until the status register is cleared.
Permanent dominant
If the bus state is dominant (low) for more than 12 ms a permanent dominant status is
detected. The status bit is latched and can be read and optionally cleared by SPI. The
transmitter is not disabled.
Wake up (from LIN)
In standby mode the L99PM62GXP can receive a wake up from LIN bus. For the wake up
feature the L99PM62GXP logic differentiates two different conditions.
Normal wake up
Normal wake up can occur when the LIN transceiver was set in standby mode while LIN was
in recessive (high) state. A dominant level at LIN for t
active mode.
Wake up from short to GND condition
If the LIN transceiver was set in standby mode while LIN was in dominant (low) state,
recessive level at LIN for t
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.
S
Dominant TxDL time out
LIN permanent recessive
Thermal shutdown 1
V
The LIN receiver is not disabled in case of any failure condition.
> Vpor (i.e. Vs power-on reset threshold), the LIN transceiver is enabled. The LIN
S
over/undervoltage
2.1
, but are realized in different stand alone LIN transceivers / micro
linbus
Doc ID 17639 Rev 3
, switches the L99PM62GXP to active mode.
linbus
, switches the L99PM62GXP to
Detailed description
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