L6482HTR datasheet(3/73 Pages) STMICROELECTRONICS

Part #	L6482HTR

Description	cSPIN?? microstepping motor controller with motion engine and SPI

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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3 / 73 page

L6482

Contents

Doc ID 023768 Rev 2

3/73

6.9

Overcurrent detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

6.10

Undervoltage lockout (UVLO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

6.11

VS undervoltage lockout (UVLO_ADC) . . . . . . . . . . . . . . . . . . . . . . . . . . 29

6.12

Thermal warning and thermal shutdown . . . . . . . . . . . . . . . . . . . . . . . . . 29

6.13

Reset and standby . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

6.14

External switch (SW pin) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

6.15

Programmable gate drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

6.16

Deadtime and blanking time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

6.17

Integrated analog-to-digital converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

6.18

Supply management and internal voltage regulators . . . . . . . . . . . . . . . . 33

6.19

BUSY/SYNC pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

6.20

FLAG pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

7

Phase current control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

7.1

Predictive current control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

7.2

Auto-adjusted decay mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

7.3

Auto-adjusted fast decay during the falling steps . . . . . . . . . . . . . . . . . . . 38

7.4

Torque regulation (output current amplitude regulation) . . . . . . . . . . . . . . 39

8

Serial interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

9

Programming manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

9.1

Register and flag description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

9.1.1

ABS_POS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

9.1.2

EL_POS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

9.1.3

MARK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

9.1.4

SPEED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

9.1.5

ACC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

9.1.6

DEC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

9.1.7

MAX_SPEED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

9.1.8

MIN_SPEED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

9.1.9

FS_SPD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

9.1.10

TVAL_HOLD, TVAL_RUN, TVAL_ACC and TVAL_DEC . . . . . . . . . . . . 47

9.1.11

T_FAST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

9.1.12

TON_MIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

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