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參數(shù)資料
| 型號： | L99PM62XP |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 電源管理 |
| 英文描述： | 4-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO36 |
| 封裝： | ROHS COMPLIANT, POWERSSO-36 |
| 文件頁數(shù)： | 8/98頁 |
| 文件大?。?/td> | 1117K |
| 代理商： | L99PM62XP |
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Description
L99PM62XP
Doc ID 16363 Rev 2
A cyclic monitoring of wake-up inputs and a periodic interrupt/wake-up by timer is available
in standby modes.
2.2.1
Active mode
All functions are available and the device is controlled by the ST SPI Interface.
2.2.2
Flash mode
To program the system microcontroller, the L99PM62 can be operated in Flash mode where
the internal watchdog is disabled. This mode can also be used for software debugging.
Except for the disabled watchdog, the Flash mode is identical to active mode and all device
features are available.
The mode can be entered if one of the following conditions is applied:
●
VTxDL > VFlash
●
VTxDC > VFlash
At exit from Flash mode (VTxD < VFlash) no NReset pulse is generated and the watchdog
starts with a long open window.
Note:
Setting both TxDL and TxDC to high voltage levels (> VFlash) is not allowed
2.2.3
V1 standby mode
The transition from active mode to V1 standby mode is controlled by SPI.
To supply the micro controller in a low power mode, the voltage regulator 1 (V1) remains
active. In order to reduce the current consumption, the regulator goes in low current mode
as soon as the supply current of the microcontroller goes below the Icmp current threshold.
At this transition, the L99PM62 also deactivates the internal watchdog.
Relay outputs, LIN and CAN transmitters is switched off in V1 standby mode. High-side
outputs and the V2 regulator remain in the configuration programmed prior to the standby
command.
A cyclic supply of external contacts and a synchronized monitoring of the contact state can
be activated and configured by SPI.
In V1 standby mode various wake up sources can be individually programmed. Each wake
up event puts the device into active mode and forces the RxDL/NINT pin to a low level
indicating the wake-up condition to the microcontroller.
After power ON reset (POR) all wake up sources are activated by default except the periodic
interrupt/wake timer.
With the interrupt timer the micro controller can be forced from ‘stop’ to ‘run’ after a
programmable period. The RxDL/NINT pin is forced low after the timer is elapsed. The
L99PM62XP enters active mode and is awaiting a valid watchdog trigger.
Both internal timers can be used for this feature.
The interrupt timer (TINT) at pin RxDL/NINT is only available in V1 standby mode.
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