VNF1248F datasheet(9/79 Pages) STMICROELECTRONICS

Part #	VNF1248F

Description	High-side switch controller with intelligent fuse protection for 12 V, 24 V and 48 V automotive applications

PDF	79 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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9 / 79 page

Symbol

Parameter

Test conditions

Min. Typ. Max. Unit

tWDTB

Watchdog toggle bit timeout

WD_TIME

configuration:

-10%

+10%

150

200

tSTBY_OUT

Minimum time during which CSN must be toggled low to the

wake-up device from standby state

Device in standby state

μs

Figure 3. SPI specification: timing waveforms

tFSDO

tRSDO

tCSNQV

tHCSN

tLSCK

tSSCK

tCSNQT

tSCSN

tHSCK

tSCKQV

tSSDI

tHSDI

: CSN high time

: CSN falling until SDO valid

: SDO fall time

: SDO rise time

: SCK setup time before CSN rising

: CSN rising until SDO tristate

: CSN setup time before SCK rising

: SCK high time

: SCK falling until SDO valid

: SDI setup time before SCK rising

: SDI hold time

: SCK low time

tHCSN

tCSNQV

tSCSN

tHSCK

tFSDO

tRSDO

tSSCK

tCSNQT

CSN

SDO

SCK

SDI

tSCKQV

tLSCK

tSSDI

tHSDI

Table 8. HWLO logic input pin specification

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

IIL

Low level input current

VIL = 1.5 V

0.5

2.5

µA

IIH

High level input current

VIH = 2.1 V

1.6

3.5

µA

VIL

Low level input voltage

1.5

VIH

High level input voltage

2.1

VI_HYST

Input hysteresis voltage

0.4

tHWLO

HWLO filtering time

-10%

10%

µs

VNF1248F

Electrical specification

DS14109 - Rev 7

page 9/79

VNF1248F Datasheet(PDF) 9 Page - STMicroelectronics

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