L6472 STMICROELECTRONICS [STMicroelectronics], L6472 Datasheet - Page 45

• Manufacturer Part Number: L6472
• Description: dSPIN fully integrated microstepping motor driver
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

L6472
9.1.11
9.1.12
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 (see
and
The available range for both parameters is from 0.5 µs to 8 µs.
Table 13.
Any attempt to write to the register when the motor is running causes the command to be
ignored and NOTPERF_CMD to rise (see
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
The available range for both parameters is from 0.5 µs to 64 µs.
Table 14.
Any attempt to write to the register when the motor is running causes the command to be
ignored and the NOTPERF_CMD to rise (see
Bit 7
0
0
1
1
7.3
0
0
1
1
for details):
Bit 6
Maximum fast decay times
Section
Minimum ON time
0
0
1
1
TOFF_FAST [3..0]
FAST_STEP[3..0]
TOFF_FAST
0
0
1
1
7.2).
0
0
1
1
Bit 5
Doc ID 022729 Rev 1
0
0
1
1
0
0
1
1
Bit 4
0
1
0
1
Section
0
0
1
1
Section
Bit 3
9.1.19).
0
0
1
1
9.1.19).
Bit 2
Fast decay time
0
1
0
1
FAST_STEP
0.5 µs
7.5 µs
1 µs
8 µs
Programming manual
Bit 1
63.5 µs
0.5 µs
64 µs
Time
1 µs
Section 7.2
Bit 0
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