L6474PD View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'L6474PD' PDF : 53 Pages View PDF
L6474
Programming manual
Table 25. Programmable power bridge output slew rate values
POW_SR [10]
Output slew rate (1) [V/s] (1)
0
0
320
0
1
75
1
0
110
1
1
260
1. See SRout_r and SRout_f parameters in Table 5: Electrical characteristics on page 10 for details.
The TQREG bit sets if the torque regulation (see Section 7.4 on page 30) is performed
through the ADCIN voltage (external) or TVAL register (internal):
TQREG
0
1
Table 26. External torque regulation enable
External torque regulation enable
Internal registers
ADC input
The TOFF time is used by current control system. If its value is lower than the TOFF_MIN
one, the OFF time is equal to TOFF_MIN.
Table 27. OFF time
TOFF [40]
0
0
0
0
0
0
0
0
0
1
0
0
0
1
0
OFF time
4 µs
4 µs
8 µs
1
1
1
1
1
124 µs
9.1.13
Any attempt to write the CONFIG register when the outputs are enabled causes the
command to be ignored and the NOTPERF_CMD flag to rise (see Section 9.1.13).
STATUS
Bit 15
1
Bit 7
NOTPERF_CMD
Table 28. STATUS register
Bit 14 Bit 13 Bit 12 Bit 11
Bit 10
1
Bit 6
0
1
Bit 5
0
OCD
Bit 4
DIR
TH_SD
Bit 3
0
TH_WRN
Bit 2
0
Bit 9
UVLO
Bit 1
1
Bit 8
WRONG_CMD
Bit 0
HiZ
When HiZ flag is high, it indicates that the bridges are in high impedance state. Enable
command makes the device exit from High Z state unless error flags forcing a High Z state
are active.
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