L6470PD STMicroelectronics, L6470PD Datasheet - Page 61

• 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
9.2.10
9.2.11
GoUntil (ACT, DIR, SPD)
Table 46.
The GoUntil command produces a motion at SPD speed imposing a forward (DIR = '1') or a
reverse (DIR = '0') direction. When an external switch turn-on event occurs (see
Section
copied into the MARK register (if ACT = '1'); then the system performs a SoftStop command.
The SPD value is expressed in step/tick (format unsigned fixed point 0.28) that is the same
format as the SPEED register (see
The SPD value should be lower than MAX_SPEED and greater than MIN_SPEED,
otherwise the target speed is imposed at MAX_SPEED or MIN_SPEED respectively.
If the SW_MODE bit of the CONFIG register is set low, the external switch turn-on event
causes a HardStop interrupt instead of the SoftStop one (see
This command keeps the BUSY flag low until the switch turn-on event occurs and the motor
is stopped. This command can be given anytime and is immediately executed.
ReleaseSW (ACT, DIR)
Table 47.
The ReleaseSW command produces a motion at minimum speed imposing a forward (DIR =
'1') or reverse (DIR = '0') rotation. When SW is released (opened), the ABS_POS register is
reset (ACT = '0') or the ABS_POS register value is copied into the MARK register (ACT =
'1'); the system then performs a HardStop command.
Note that resetting the ABS_POS register is equivalent to setting the HOME position.
If the minimum speed value is less than 5 step/s or low speed optimization is enabled, the
motion is performed at 5 step/s.
The ReleaseSW command keeps the BUSY flag low until the switch input is released and
the motor is stopped.
Bit 7
Bit 7
X
1
1
6.13), the ABS_POS register is reset (if ACT = '0') or the ABS_POS register value is
Bit 6
Bit 6
X
0
GoUntil command structure
ReleaseSW command structure
0
Bit 5
Bit 5
0
X
0
Bit 4
SPD (Byte 1)
SPD (Byte 0)
X
Bit 4
0
Doc ID16737 Rev 5
1
Section
Bit 3
ACT
Bit 3
ACT
9.1.4).
Bit 2
SPD (Byte 2)
0
Bit 2
0
Bit 1
1
Bit 1
1
Section 6.13
Bit 0
DIR
Bit 0
DIR
Programming manual
and 9.1.21).
from host
from host
from host
from host
from host
61/70