參數(shù)資料
型號(hào)： 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(yè)數(shù)： 11/98頁(yè)
文件大?。?/td> 1117K
代理商： L99PM62XP
L99PM62XP
Description
Doc ID 16363 Rev 2
2.2.8
Timer interrupt / wake-up of microcontroller by timer
During standby modes the cyclic wake up feature, configured via SPI, allows waking up the
C after a programmable timeout according to timer1 or timer2.
From V1 standby mode, the L99PM62XP wakes up (after the selected timer has elapsed)
and sends an interrupt signal (via RxDL/NINT pin) to the C. The device enters active mode
and the watchdog is started with a long open window. The microcontroller can send the
device back into V1 standby after finishing its tasks.
From VBAT standby mode, the L99PM62XP wakes up (after the selected timer has elapsed),
turns on the V1 regulator and provides an NReset signal to the C. The device enters active
mode and the watchdog is started with a long open window. The microcontroller can send
the device back into VBAT standby after finishing its tasks.
2.3
Functional overview (truth table)
Table 4.
Functional overview (truth table)
Function
Comments
Operating modes
Active mode
V1-standby
static mode
(cyclic sense)
VBAT-standby
static mode
(cyclic sense)
Voltage-regulator, V1
VOUT = 5 V
On
On(1)
Off
Voltage-regulator, V2
VOUT = 5 V
On/ Off (2)
On(2) / Off
On(2) / Off
Reset-generator
On
Off
Window watchdog
V1 monitor
On
Off (On: I_V1 > Icmp-
threshold and Icmp =0)
Off
Wake up
Off
Active(3)
Active(3)
HS-cyclic supply
Oscillator time
base
On / Off
On(2) / Off
Relay driver
On
Off
Operational amplifiers
On
Off
LIN
LIN 2.1
On
Off(4)
Off(4)
HS_CAN
On
Off(4)
FSO (if configured by
SPI), active by default
Fail safe output OUT3/FSO Off(5)
OUT3/FSO Off(5)
OUT3/FSO Off(5)
Oscillator
On
(6)
Vs-monitor
On
(7)
1.
Supply the processor in low current mode.
2.
Only active when selected via SPI.
3.
Unless disabled by SPI.
4.
The bus state is internally stored when going to standby mode. A change of bus state leads a wake-up after exceeding of
internal filter time (if wake-up by LIN or CAN is not disabled by SPI).
5.
ON in fail-safe condition: If Standby mode is entered with active Fail Safe mode, the output remains ON in Standby mode.
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