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VNF1248F Datasheet(PDF) 50 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) 50 Page - STMicroelectronics

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12.12
ROM memory map
Table 48. ROM memory map
Address
Name
Access
Content
(hex)
Description
00h
Company code
R
00h
Indicates the code of STMicroelectronics company
01h
Device family
R
01h
Indicates the product family
02h
Device N. 1
R
55h
Indicates the first code of the product
03h
Device N. 2
R
52h
Indicates the second code of the product
04h
Device N. 3
R
07h
Indicates the third code of the product
05h
Device N. 4
R
4Ah
Indicates the fourth code of the product
0Ah
Silicon version
R
02h
Related silicon version
10h
SPI mode
R
31h
Bit7 = 0, burst read is disabled
SPI data length = 32 bits
Bit6, DL2 = 0
Bit5, DL1 = 1
Bit4, DL0 = 1
Bit3, SPI8 = 0: 8-bit frame option not available
Bit2 = 0
Parity check is used
Bit1, S1= 0
Bit0, S0 = 1
11h
WD type 1
R
4Ah
A WD is implemented
Bit7, WD1 = 0
Bit6, WD0 = 1
WD period 50 ms = 10*5ms
-> WT[5:0] = 0xA
Bit5, WT5 = 0
Bit4, WT4 = 0
Bit3, WT3 = 1
Bit2, WT2 = 0
Bit1, WT1 = 1
Bit0, WT0 = 0
13h
WD bit pos. 1
R
43h
Bit7,WB1 = 0
Bit6,WB2 = 1
WBA[5-0], Bit[5-0] = address of the config. register, where the WD bit is
located = 03h = 000011b
14h
WD bit pos. 2
R
C1h
Bit7,WB1 = 1
Bit6,WB0 = 1
Bit position of the WD bit within the corresponding configuration register
= 01d = 000001b
3Fh
Advanced
operation code
R
00h
Access to this address triggers a SW reset (all control registers are set to
their default values; in addition, all status registers are cleared too).(1)
1. Data field should not be “all ones”, otherwise an “SDI stuck at” error occurs.
VNF1248F
SPI functional description
DS14109 - Rev 7
page 50/79



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