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L9680 bảng dữ liệu(PDF) 198 Page - STMicroelectronics

tên linh kiện L9680
Giải thích chi tiết về linh kiện  Automotive advanced airbag for mid/high end applications and cut-off battery IC
PDF  286 Pages
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
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L9680 bảng dữ liệu(HTML) 198 Page - STMicroelectronics

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DC sensor interface
L9680
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DS11615 Rev 7
Another control (DCS_PAD_V bit in SYS_CFG register) is preprogrammed to select either a
voltage measurement or a current measurement on DCS0 for this purpose.
The automated control of the PSINHINT signal occurs when the microcontroller runs
diagnostic testing of the DCS0 interface. A 1 second timer is included to ensure the
diagnostic test is run periodically. When the timer expires (down-counts to 0), the PSINHINT
signal is asserted. When the measurement of the DCS0 voltage or DCS current (as selected
by the DCS_PAD_V bit) is taken, and the value falls within the preprogrammed window, the
timer will be reloaded. If the measurement is outside the window, the timer will not be
reloaded, and it will continue to count down until it expires, resulting in activation of
PSINHINT. For testing purposes, the PSINHINT can be controlled directly via SPI while in
DIAG state using the Diag State Test Selection (DSTEST) register.



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