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L9788 数据表(PDF) 13 Page - STMicroelectronics

部件名 L9788
功能描述  Multifunction IC for automotive engine management system
PDF  264 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

L9788 数据表(HTML) 13 Page - STMicroelectronics

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DS12308 Rev 4
13/264
L9788
List of figures
14
Figure 49.
PreDriver3 configured for O2H load bit O2H_PDRV_3 = CONFIG_REG_16_1[7] = 1: . . 123
Figure 50.
PreDriver1 configured for O2H load bit O2H_PDRV_1 = CONFIG_REG_16_1[6] = 1: . . 123
Figure 51.
Ignition pre-drivers block schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
Figure 52.
IGN pre-drivers diagnosis timing diagram at short to GND. . . . . . . . . . . . . . . . . . . . . . . . 129
Figure 53.
IGN pre-drivers diagnosis timing diagram at short to VBAT . . . . . . . . . . . . . . . . . . . . . . . 130
Figure 54.
Low-side drivers ON diagnosis timing diagram at open load . . . . . . . . . . . . . . . . . . . . . . 131
Figure 55.
VRS interface block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Figure 56.
VRS block diagram - Normal operating mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Figure 57.
Hysteresis application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Figure 58.
VRS_A fully adaptive hysteresis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
Figure 59.
EN_FALLING_FILT = 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
Figure 60.
EN_FALLING_FILT = 0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
Figure 61.
VRS block diagram - Diagnostic operating mode - Current path . . . . . . . . . . . . . . . . . . . 142
Figure 62.
Sensor sketch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
Figure 63.
Variable reluctance sensor (VRS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
Figure 64.
Hall effect sensor configuration 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
Figure 65.
Hall effect sensor configuration 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
Figure 66.
CAN FD interface diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
Figure 67.
CAN state diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
Figure 68.
CAN wake up options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
Figure 69.
CAN_TX input structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
Figure 70.
CAN transceiver test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154
Figure 71.
Block diagram of LIN interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
Figure 72.
LIN TimeOut function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
Figure 73.
LIN_TX input structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
Figure 74.
LIN transmission timing chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
Figure 75.
LIN reception timing chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
Figure 76.
LIN duty cycle timing chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
Figure 77.
LIN slew rate timing chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
Figure 78.
Test circuit for measurement of slew rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
Figure 79.
Band-gap supply architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
Figure 80.
Analog bist implementation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
Figure 81.
MSC communication timing diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
Figure 82.
Communication diagram between µC and U-CHIP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
Figure 83.
MSC voltage levels diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
Figure 84.
MSC Command Frame bit stream . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
Figure 85.
MSC Data Frame bit stream . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
Figure 86.
MSC upstream . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
Figure 87.
MSC upstream commands example. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
Figure 88.
MSC activity watchdog time diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
Figure 89.
LQFP100 (14x14x1.4 mm exp. pad down) package outline . . . . . . . . . . . . . . . . . . . . . . . 239
Figure 90.
LQFP100 (14x14x1.4 mm exp. pad down) marking information. . . . . . . . . . . . . . . . . . . . 242
Figure 91.
Slew rate and on/off delay time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243
Figure 92.
Power up and power down with deglitch concept (not permanent battery) . . . . . . . . . . . 244
Figure 93.
Power up and power down with boost (permanent battery) . . . . . . . . . . . . . . . . . . . . . . . 244
Figure 94.
Power up permanent battery without boost and cranking. . . . . . . . . . . . . . . . . . . . . . . . . 245
Figure 95.
Power up permanent battery with boost and cranking . . . . . . . . . . . . . . . . . . . . . . . . . . . 245
Figure 96.
Power up with WK_IN and power down with WK_IN in not permanent battery condition 246
Figure 97.
Power up with WK_IN and power down with WK_IN in permanent battery condition . . . 246
Figure 98.
Power up with WAKE_UP_EOT/CAN and power down with WAKE_UP_EOT/CAN
(Scenario 9 and 10) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 247
Figure 99.
Power up with WAKE_UP_EOT/CAN and power down with WAKE_UP_EOT/CAN



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