L6482 datasheet(48/73 Pages) STMICROELECTRONICS

No. de pieza	L6482

Descripción Electrónicos	cSPIN?? microstepping motor controller with motion engine and SPI

PDF	73 Pages

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Fabricante Electrónico	STMICROELECTRONICS [STMicroelectronics]

Página de inicio	http://www.st.com

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48 / 73 page

Programming manual

L6482

48/73

Doc ID 023768 Rev 2

9.1.11

T_FAST

The T_FAST register contains the maximum fast decay time (TOFF_FAST) and the

maximum fall step time (FALL_STEP) used by the current control system (Section 7.2 and

Section 7.3 for details):

The available range for both parameters is from 2 µs to 32 µs.

Any attempt to write to the register when the motor is running causes the command to be

ignored and NOTPERF_CMD to rise (Section 9.1.21).

9.1.12

TON_MIN

This parameter is used by the current control system when current mode operation is

selected.

The TON_MIN register contains the minimum on-time value used by the current control

system (see Section 7.2).

The available range for both parameters is from 0.5 µs to 64 µs.

Table 15.

Torque regulation by TVAL_HOLD, TVAL_ACC, TVAL_DEC and

TVAL_RUN registers

TVAL_X [6..0]

Peak reference voltage

00000

7.8 mV

00000

15.6 mV

11111

992.2 mV

11111

1 V

Table 16.

FS_SPD register

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

TOFF_FAST

FAST_STEP

Table 17.

Maximum fast decay times

TOFF_FAST [3..0] FAST_STEP[3..0]

Fast decay time

2 µs

4 µs

28 µs

32 µs

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