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L9908 Fiches technique(PDF) 43 Page - STMicroelectronics

No de pièce L9908
Description  Automotive 3-Phase motor gate driver unit
PDF  152 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9908 Fiches technique(HTML) 43 Page - STMicroelectronics

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Figure 24. Recommended Power-Up sequence
5.8
Digital I/O
5.8.1
VIO power supply
The VIO power supply is a dedicated power input designed to supply the Digital Output circuitry. The voltage level
applied to VIO will reflect directly onto digital output level allowing compliance with major digital I/O standards (5
V, 3.3 V).
5.8.2
Digital Input (DI)
Digital input pins on L9908 are used to transfer digital communications coming from an external source and
supply domain to the internal logic and it’s related to a 3.3 V domain.
Table 31. Digital input pins functional partitioning
Pins
Default State
Description
SCLK
Type A – Internal Current Pull-down
SPI Pin (SPI communication related pin)
SDI
Type A – Internal Current Pull-down
SPI Pin (SPI communication related pin)
NCS
Type C – Internal Current Pull-up
SPI Pin (SPI communication related pin)
INHn, INLn [1,2,3]
Type A – Internal Current Pull-down
Control Loop Pins (Gate Driver control related pins)
L9908
Functional description
DS13546 - Rev 5
page 43/152



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