L6480 datasheet(68/73 Pages) STMICROELECTRONICS

68 / 73 page

Programming manual

L6480

68/73

Doc ID 023278 Rev 3

This command can be given anytime and is immediately executed. This command keeps

the BUSY flag low until the motor is stopped.

9.2.17

HardStop

The HardStop command causes an immediate motor stop with infinite deceleration.

When the motor is in high impedance state, a HardStop command forces the bridges to exit

high impedance state; no motion is performed.

This command can be given anytime and is immediately executed. This command keeps

the BUSY flag low until the motor is stopped.

9.2.18

SoftHiZ

The SoftHiZ command disables the power bridges (high impedance state) after a

deceleration to zero; the deceleration value used is the one stored in the DEC register

(Section 9.1.6). When bridges are disabled, the HiZ flag is raised.

When the motor is stopped, a SoftHiZ command forces the bridges to enter high impedance

state.

This command can be given anytime and is immediately executed. This command keeps

the BUSY flag low until the motor is stopped.

9.2.19

HardHiZ

The HardHiZ command immediately disables the power bridges (high impedance state) and

raises the HiZ flag.

When the motor is stopped, a HardHiZ command forces the bridges to enter high

impedance state.

This command can be given anytime and is immediately executed.

This command keeps the BUSY flag low until the motor is stopped.

Table 64.

HardStop command structure

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

from host

Table 65.

SoftHiZ command structure

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

101000

from host

Table 66.

HardHiZ command structure

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

101010

from host

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