L6470PD STMicroelectronics, L6470PD Datasheet - Page 59

• Manufacturer Part Number: L6470PD
• Description: Motor / Motion / Ignition Controllers & Drivers dSPIN 7.0A 8 - 45 V DMOS Motor Driver
• Manufacturer: STMicroelectronics
• Type: 2 Phase Stepper Motor Driverr

Specifications of L6470PD

• Rohs: yes
• Product: Stepper Motor Controllers / Drivers
• Operating Temperature: - 40 C to + 150 C
• Mounting Style: SMD/SMT
• Package / Case: POWERSO-36
• Number Of Outputs: 4
• Output Current: 3 A
• Output Voltage: 3.2 V
• Power Dissipation: 5 W

L6470
9.2.6
9.2.7
StepClock (DIR)
Table 42.
The StepClock command switches the device in Step-clock mode (see
imposes the forward (DIR = '1') or reverse (DIR = '0') direction.
When the device is in Step-clock mode, the SCK_MOD flag in the STATUS register is raised
and the motor is always considered stopped (see
The device exits from Step-clock mode when a constant speed, absolute positioning or
motion command is sent through SPI. Motion direction is imposed by the respective
StepClock command argument and can by changed by a new StepClock command without
exiting Step-clock mode.
Events that cause bridges to be forced into high impedance state (overtemperature,
overcurrent, etc.) do not cause the device to leave Step-clock mode.
The StepClock command does not force the BUSY flag low. This command can only be
given when the motor is stopped. If a motion is in progress, the motor should be stopped
and it is then possible to send a StepClock command.
Any attempt to perform a StepClock command when the motor is running causes the
command to be ignored and the NOTPERF_CMD flag to rise (see
Move (DIR, N_STEP)
Table 43.
The Move command produces a motion of N_STEP microsteps; the direction is selected by
the DIR bit ('1' forward or '0' reverse).
The N_STEP value is always in agreement with the selected step mode; the parameter
value unit is equal to the selected step mode (full, half, quarter, etc.).
This command keeps the BUSY flag low until the target number of steps is performed. This
command can only be performed when the motor is stopped. If a motion is in progress, the
motor must be stopped and it is then possible to perform a Move command.
Any attempt to perform a Move command when the motor is running causes the command
to be ignored and the NOTPERF_CMD flag to rise (see
Bit 7
Bit 7
X
0
0
Bit 6
Bit 6
X
Stepclock command structure
1
Move command structure
1
Bit 5
Bit 5
0
0
N_STEP (Byte 1)
N_STEP (Byte 0)
Bit 4
Bit 4
Doc ID16737 Rev 5
0
1
N_STEP (Byte 2)
Bit 3
Bit 3
0
1
Bit 2
Bit 2
0
0
Section 6.7.5
Section
Bit 1
Bit 1
0
0
and 9.1.22).
9.1.22).
Bit 0
Bit 0
DIR
DIR
Section
Programming manual
Section
9.1.22).
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6.7.5) and
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