L9679P datasheet(152/272 Pages) STMICROELECTRONICS

部件名	L9679P

功能描述	Automotive advanced airbag IC for mid/high end applications

PDF	272 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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152 / 272 page

SPI interfaces

L9679P

152/272

DocID029275 Rev 1

7.6.3

Remote sensor x current registers y (RSTHRx_y)

Remote sensor 0, base current and delta to calculate 1st top current (RSTHR0_L)

Remote sensor 1, base current and delta to calculate 1st top current (RSTHR1_L

ID:

5C (RSTHR0_L)

5D (RSTHR1_L)

Type:

Read:

5C00 (RSTHR0_L)

5D00 (RSTHR1_L)

Write:

MOSI_RS

-X

MISO_RS

DELTA 1ST TOP [9:0]

BASE CURRENT [9:0]

BASE CURRENT [9:0] $A1 $A1 $A1 Base current measured by internal converter (93.75 μA ±9% each LSB).

DELTA 1ST TOP [9:0] $103 $103 $103 Delta measured by internal converter respect to base current (93.75 μA ±9%

each LSB) to get top current.

Low threshold = base current+(DELTA_1ST_TOP/2) in case of PSI5 without

current averaged algorithm (bit 4 of RSRCx register equal to 0).

Low threshold = base current+(DELTA_1ST_TOP) in case of PSI5 with

current averaged algorithm (bit 4 of RSRCx register equal to 1).

L9679P 数据表(PDF) 152 Page - STMicroelectronics