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L9779WD Datasheet(PDF) 8 Page - STMicroelectronics

Part # L9779WD
Description  Multifunction IC for engine management system
PDF  170 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9779WD Datasheet(HTML) 8 Page - STMicroelectronics

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L9779WD
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DocID027452 Rev 5
Figure 46.
Stepper motor operation diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Figure 47.
Configurable power stages OUT [21 to 24] can be configured to create the H-bridge1 . . . 79
Figure 48.
Configurable power stages OUT [25 to 28] can be configured to create the H-bridge2 . . . 79
Figure 49.
Stepper counter diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Figure 50.
Stepper motor driver “off” diagnosis time diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Figure 51.
Stepper motor driver diagnosis I-V relationship diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Figure 52.
Open load detection during “on” phase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Figure 53.
Open load detection during “on” phase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Figure 54.
Short to GND detection during “on” phase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Figure 55.
Short to VB & open load diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Figure 56.
ISO serial line (K-LINE) circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Figure 57.
ISO serial line switching waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Figure 58.
ISO serial line: short circuit protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Figure 59.
CAN transceiver diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Figure 60.
CAN transceiver switching waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Figure 61.
CAN transceiver test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Figure 62.
Flying wheel interface circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Figure 63.
Auto adaptative hysteresis diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Figure 64.
VRS interface block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Figure 65.
Auto-adaptive time filter (rising edge) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Figure 66.
Adaptive filter function when the MSC bit are 00 or 01. . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Figure 67.
Adaptive Filter Function when the MSC bit is 10 or 11 . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Figure 68.
Variable reluctance sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Figure 69.
VRs typical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Figure 70.
Hall effect sensor configuration 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Figure 71.
Hall effect sensor configuration 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Figure 72.
Diagnosis test diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Figure 73.
WDA block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Figure 74.
Monitoring cycle diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Figure 75.
4-bit Markov chain diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Figure 76.
MicroSecond Channel activity watch dog diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Figure 77.
Communication diagram between µC and L9779WD. . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
Figure 78.
Command frame diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Figure 79.
Data frame diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Figure 80.
Upstream communication diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Figure 81.
Timing diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Figure 82.
Time circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Figure 83.
Cycle time diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Figure 84.
HiQUAD-64 package outline. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167



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