L9679E datasheet(126/127 Pages) STMICROELECTRONICS

126 / 127 page

List of figures

Figure 1.

Pinout diagram (top view)............................................................. 8

Figure 2.

Functional block diagram ............................................................. 9

Figure 3.

Power control state flow diagram ...................................................... 11

Figure 4.

Normal power-up sequence .......................................................... 13

Figure 5.

Normal power-down sequence ........................................................ 14

Figure 6.

IC operating state diagram ........................................................... 15

Figure 7.

Internal voltage monitors ............................................................ 16

Figure 8.

Reset control logic ................................................................ 16

Figure 9.

Deployment driver control blocks ...................................................... 67

Figure 10.

Deployment driver control logic – Enable signals............................................ 68

Figure 11.

Deployment driver control logic - Turn-on signals ........................................... 68

Figure 12.

Analog deployment block diagram...................................................... 69

Figure 13.

Global SPI deployment enable state diagram .............................................. 70

Figure 14.

Current monitor counter behavior ...................................................... 71

Figure 15.

Deployment loop diagnostics ......................................................... 73

Figure 16.

SRx pull-down enable logic .......................................................... 74

Figure 17.

Deployment timer diagnostic sequence .................................................. 78

Figure 18.

High-level loop diagnostic flow 1 ....................................................... 79

Figure 19.

High-level loop diagnostic flow 2 ....................................................... 80

Figure 20.

Remote sensor interface control blocks .................................................. 81

Figure 21.

PSI-5 remote sensor protocol (10-bit, 1-bit parity) ........................................... 82

Figure 22.

Manchester bit encoding ............................................................ 82

Figure 23.

Remote sensor synchronization pulses .................................................. 84

Figure 24.

Sync pulse dependence by supplies .................................................... 85

Figure 25.

PSI5 Slot Timing Control ............................................................ 86

Figure 26.

ADC conversion time............................................................... 93

Figure 27.

Application circuit ................................................................. 95

Figure 28.

SPI timing diagram ............................................................... 101

Figure 29.

Deployment drivers diagram......................................................... 104

Figure 30.

TQFP48 (7x7x1 mm exp. pad down 5.0x5.0) package outline ...................................115

Figure 31.

TQFP48 (7x7x1 mm exp. pad down) marking information......................................118

L9679E

List of figures

DS12485 - Rev 8

page 126/127

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