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L9945 データシート(PDF) 113 Page - STMicroelectronics

部品番号 L9945
部品情報  Automotive fully configurable 8-channel High/Low side MOSFET pre-driver suitable for 12 V and 24 V systems
PDF  151 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9945 データシート(HTML) 113 Page - STMicroelectronics

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RESPONSE 12
Frame partitioning
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
C
FIXED_PATTERN
PUPD8
PUPD7
PUPD6
PUPD5
Description:
Channel 5-8 control signal integrity
Reset
0xCABE0001
[31:28] C: Response to command 12
Reset: 1100
Reset Condition: -
[27] R/W: Bit to read/write configuration
0: Write & request read
1: Request read only
Reset: 1
Reset Condition: POR, NRES
[26:21] FIXED_PATTERN: Fixed pattern
Reset: 010101
Reset Condition: POR, NRES
[20:17] V8…5: This bit monitors the external FET drain voltage by exploiting the internal diagnostic comparators. It is useful for
obtaining the status of the output during normal operation
The value of this bit depends on the channel configuration:
0: Drain voltage low (VDRAIN < VLVT) -> transistor ON
1: Drain voltage high (VDRAIN > VLVT) -> transistor OFF
(Low-Side with NFET)
0: Drain voltage low (VDRAIN < VOL) -> transistor OFF
1: Drain voltage high (VDRAIN > VOL) -> transistor ON
(High-Side with NFET/PFET)
Reset: 1111
Reset Condition: POR, NRES
[16:13] C8…5: This bit combines the control signals SPI_ON_OUTxx, NONx and SPI_input_sel_xx to determine if the x-th channel is
commanded ON or OFF
0: output commanded OFF
1: output commanded ON
Reset: 0000
Reset Condition: POR, NRES
L9945
SPI MOSI/MISO list
DS12275 - Rev 8
page 113/151



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