SPSB100 datasheet(204/213 Pages) STMICROELECTRONICS

204 / 213 page

7.21

Reset output (NRST) .........................................................104

7.22

VREG voltage regulator .......................................................104

7.23

BIST timing .................................................................105

Application circuit .............................................................. 106

8.1

External components .........................................................106

8.2

External components calculation................................................108

8.2.1

BUCK1 and BUCK2 inductor.............................................. 108

8.2.2

BUC3 inductor......................................................... 109

SPI registers.................................................................... 110

9.1

Global status byte GSB ....................................................... 110

9.2

Control register overview ...................................................... 112

9.3

U_NVM register overview...................................................... 113

9.4

Status register overview ....................................................... 116

9.5

Control registers ............................................................. 119

9.6

U_NVM registers .............................................................135

9.7

Status registers ..............................................................163

9.8

Status register that must be cleared to enter into active FP mode .................... 192

PCB layout recommendation.................................................... 194

10.1

PCB metal and component placement ...........................................196

10.2

Solder mask .................................................................196

10.3

Stencil design ...............................................................197

Package information............................................................ 198

11.1

VFQFN56+4L (8x8x0.9 mm exp. pad down) package information ....................198

Revision history ..................................................................... 200

SPSB100

Contents

DS14640 - Rev 2

page 204/213

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