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VNF1248F Datasheet(PDF) 49 Page - 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
Logo STMICROELECTRONICS - STMicroelectronics

VNF1248F Datasheet(HTML) 49 Page - STMicroelectronics

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Bit #
Name
Description
The DE is a logical OR combination of errors related to device specific blocks: charge pump output
undervoltage, NVM download failure.
DE = CP_LOW or NVM_FAIL
25
OVC
Overcurrent bit
The OVC is a ‘real-time’ bit indicating an overcurrent event (programmed VOC_THRS_X overcome)
24
FS
Fail-safe
If the FS bit is set, the device was forced into a safe state. This bit is set in the fail-safe state
(SR#1.FAILSAFE_ST = 1)
FS = FAILSAFE_ST
12.11
RAM memory map
Table 47. RAM memory map
Address
Name
Access
Content
01h
Control register 1
R/W
CR#1: 1st control register (CONTROLS)
02h
Control register 2
R/W
CR#2: 2nd control register (CONFIG 1)
03h
Control register 3
R/W
CR#3: 3rd control register (CONFIG 2)
04h
Control register 4
R/W
CR#4: 4th control register (NVM Programming)
05h
Control register 5
R/W
CR#5: 5th control register (CCM Configuration)
06h : 10h
…
R
Reserved
11h
Status register 1
R/C
SR#1: 1st status register (DIAGNOSTICS + PROTECTIONS)
12h
Status register 2
R
SR#2: 2nd status register (CURRENT SENSE + NVM PROGRAMMING
STATUS)
13h
Status register 3
R
SR#3: 3rd status register (NTC + TJ)
14h
Status register 4
R
SR#4: 4th status register (VOUT + VDS)
15h
Status register 5
R/C
SR#5: 5th status register (SELFTEST VDS)
16h
Status register 6
R/C
SR#6: 6th status register (SELFTEST STUCK ON)
17h
Status register 7
R/C
SR#7: 7th status register (SELFTEST CURRENT SENSE)
18h
Status register 8
R
SR#8: 8th status register (HSC)
19h
…
R
Reserved
Reserved
3Fh
Advanced Operation Code
C
A R&C operation to this address causes all status registers to be cleared
VNF1248F
SPI functional description
DS14109 - Rev 7
page 49/79



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