l99pm62gxp STMicroelectronics, l99pm62gxp Datasheet - Page 18

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

Detailed description
2.2.4
Note:
2.2.5
18/102
Interrupt
The interrupt signal (linked to RxDL/NINT internally) indicates a wake-up event from V
standby mode. In case of a wake-up by Wake-up Inputs, activity on LIN or CAN, SPI access
or timer-interrupt the NINT pin is pulled low for 56 µs.
In case of V
regulator switches to high current mode and the watchdog starts. No Interrupt signal is
generated.
V
The transition from active mode to V
In V
switched off. High-side outputs and the V
programmed prior to the standby command.
In V
minimum level.
Inputs TXDL, TXDC and CSN must be terminated to GND in V
minimum standby current.
This can be achieved with the internal ESD protection diodes of the microcontroller
(microcontroller is not supplied in this mode; V
Wake up from standby modes
A wake-up from standby mode switches the device to active mode. This can be initiated by
one or more of the following events:
Table 3.
To prevent the system from a deadlock condition (no wake up possible) a configuration
where the periodic timer interrupt and wake up by LIN and HS CAN are disabled, is not
LIN bus activity
CAN bus activity
Level change of WU1 - 3
I
Timer interrupt / wake up
of µC by TIMER
SPI access
V1
BAT
> I
BAT
BAT
Wake up source
cmp
standby mode
standby mode, the V
standby mode the current consumption of the L99PM62GXP is reduced to a
1
Wake up sources
standby mode and (I
Can be disabled by SPI
Can be disabled by SPI
Can be individually configured or disabled by SPI
Device remains in V
I
current consumption). No interrupt is generated.
Programmable by SPI
– V
– V
Always active (except in V
Wake up event: CSN is low and first rising edge on CLK
cmp
at RxDL/NINT when programmable time-out has elapsed
NReset signal is generated when programmable time-out has elapsed
1
1
BAT
voltage regulator, relay outputs, LIN and CAN transmitters are
Doc ID 17639 Rev 3
= 0) and the V
standby mode: device wakes up and Interrupt signal is generated
standby mode: device wakes up, V
V1
BAT
> I
cmp
standby mode is initiated by an SPI command.
2
regulator remain in the configuration
), the device remains in standby mode, the V
1
1
regulator goes into high current mode (increased
standby mode but watchdog is enabled (If
1
is pulled to GND).
BAT
Description
standby mode)
BAT
1
regulator is turned on and
standby to achieve
L99PM62GXP
1
1