L6472PDTR View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
L6472PDTR
STMicroelectronics
'L6472PDTR' PDF : 69 Pages View PDF
L6472
9.1.11
Programming manual
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 Section 7.2
on page 34 and 7.3 on page 36 for details):
Bit 7
Bit 6
Bit 5
TOFF_FAST
Table 13. T_FAST register
Bit 4
Bit 3
Bit 2
Bit 1
FAST_STEP
Bit 0
The available range for both parameters is from 2 µs to 32 µs.
Table 14. Maximum fast decay times
TOFF_FAST [3 … 0] FAST_STEP [3 … 0]
Fast decay time
0
0
0
0
2 µs
0
0
0
1
4 µs
9.1.12
1
1
1
0
1
1
1
1
30 µs
32 µs
Any attempt to write to the register when the motor is running causes the command to be
ignored and NOTPERF_CMD to rise (see Section 9.1.19 on page 52).
TON_MIN
The TON_MIN register contains the minimum ON time value used by the current control
system (see Section 7.2 on page 34).
The available range for both parameters is from 0.5 µs to 64 µs.
Table 15. Minimum ON time
TON_MIN [6 … 0]
0
0
0
0
0
0
0
0
0
0
0
0
0
1
Time
0.5 µs
1 µs
1
1
1
1
1
1
0
1
1
1
1
1
1
1
63.5 µs
64 µs
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 Section 9.1.19).
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