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L4969URD-E Datasheet(PDF) 5 Page - STMicroelectronics

Part # L4969URD-E
Description  System voltage regulator with fault tolerant low speed CAN transceiver
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L4969URD-E Datasheet(HTML) 5 Page - STMicroelectronics

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L4969UR-E, L4969URD-E
List of figures
Doc ID 022587 Rev 2
5/46
List of figures
Figure 1.
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 2.
Pins configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 3.
State diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 4.
Wakeup signalling via RX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 5.
NRES pin internal structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 6.
NRES timings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 7.
Internal circuitry and suggested CEXT for NRES generation during sleep mode . . . . . . . . 23
Figure 8.
General dataframe format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 9.
Address / command field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 10.
Datafield #1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 11.
Datafield #2 / CRC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 12.
ADR 0: VRCR voltage regulator control register. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Figure 13.
ADR 1: CTCR CAN - transceiver control register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Figure 14.
ADR 2: GPTR global parameter and test register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Figure 15.
State transition during oscillator calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Figure 16.
State transition during oscillator calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Figure 17.
ADR4: WDC watchdog control register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Figure 18.
Watchdog configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Figure 19.
Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Figure 20.
Window watchdog. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Figure 21.
Wakeup watchdog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Figure 22.
Valid timing windows for WDC register rewrite. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Figure 23.
ADR5: GIEN global interrupt enable register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Figure 24.
ADR6: IFR interrupt flag register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Figure 25.
ADR7: CTSR CAN transceiver status register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Figure 26.
ADR 8 and 9: ID01, ID23 identifier filter sequence select register . . . . . . . . . . . . . . . . . . . 37
Figure 27.
ADR 10: BTL identifier filter bittimelogic control register. . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Figure 28.
ADR 15: SYS system status register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Figure 29.
Interrupt management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Figure 30.
General circuit connection diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Figure 31.
SO-20 package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Figure 32.
PowerSO-20 package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43


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