L6472H STMicroelectronics, L6472H Datasheet - Page 52

• Manufacturer Part Number: L6472H
• Description: Motor / Motion / Ignition Controllers & Drivers Motor DRV SPI dSPIN 7.0A 3.0 rms 8 - 45V
• Manufacturer: STMicroelectronics
• Type: 2 Phase Stepper Motor Driverr

Specifications of L6472H

• Product Category: Motor / Motion / Ignition Controllers & Drivers
• Rohs: yes
• Product: Stepper Motor Controllers / Drivers
• Operating Supply Voltage: 8 V to 45 V
• Supply Current: 0.5 mA
• Operating Temperature: - 25 C to + 125 C
• Mounting Style: SMD/SMT
• Package / Case: HTSSOP-28
• Power Dissipation: 5 W

Programming manual
9.1.19
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STATUS
Table 31.
When the HiZ flag is high it indicates that the bridges are in high-impedance state. Any
motion command causes the device to exit from High Z state (HardStop and SoftStop
included), unless error flags forcing a High Z state are active.
The UVLO flag is active low and is set by an undervoltage lockout or reset event (power-up
included). The TH_WRN, TH_SD, OCD flags are active low and indicate respectively
thermal warning, thermal shutdown and overcurrent detection events.
The NOTPERF_CMD and WRONG_CMD flags are active high and indicate, respectively,
that the command received by SPI can't be performed or does not exist at all. The SW_F
reports the SW input status (low for open and high for closed).
The SW_EVN flag is active high and indicates a switch turn-on event (SW input falling
edge).
The UVLO, TH_WRN, TH_SD, OCD, NOTPERF_CMD, WRONG_CMD and SW_EVN flags
are latched: when the respective conditions make them active (low or high) they remain in
that state until a GetStatus command is sent to the IC.
The BUSY bit reflects the BUSY pin status. The BUSY flag is low when a constant speed,
positioning or motion command is under execution and is released (high) after the command
has been completed.
The SCK_MOD bit is an active high flag indicating that the device is working in step-clock
mode. In this case the step-clock signal should be provided through the STCK input pin. The
DIR bit indicates the current motor direction:
Table 32.
MOT_STATUS indicates the current motor status:
Table 33.
NOTPERF_CMD
SCK_MOD
Bit 15
Bit 7
DIR
0
0
1
1
1
0
STATUS register
STATUS register DIR bit
STATUS register MOT_STATE bits
MOT_STATUS
Bit 14
MOT_STATUS
Bit 6
X
Bit 13
Bit 5
Doc ID 022729 Rev 2
X
0
1
0
1
Bit 12
OCD
Bit 4
DIR
SW_EVN
TH_SD
Bit 11
Bit 3
Motor direction
Forward
Reverse
TH_WRN
Bit 10
SW_F
Bit 2
Constant speed
Motor status
Deceleration
Acceleration
Stopped
UVLO
BUSY
Bit 9
Bit 1
WRONG_CMD
Bit 8
Bit 0
HiZ
L6472