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L6480 bảng dữ liệu(PDF) 48 Page - STMicroelectronics

tên linh kiện L6480
Giải thích chi tiết về linh kiện  The L6480, realized in analog mixed signal technology, is an advanced fully integrated solution suitable for driving two-phase bipolar stepper motors with microstepping.
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
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L6480 bảng dữ liệu(HTML) 48 Page - STMicroelectronics

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Programming manual
L6480
48/73
Doc ID 023278 Rev 3
9.1.14
FN_SLP_DEC
The FN_SLP_DEC register contains the BEMF compensation curve slope that is used when
the speed is greater than the intersect speed during deceleration (Section 7.4 for details). Its
value is expressed in s/step and the available range is from 0 to 0.004 with a resolution of
0.000015.
When ST_SLP, FN_SLP_ACC and FN_SLP_DEC parameters are set to zero, no BEMF
compensation is performed.
Any attempt to write the register when the motor is running causes the command to be
ignored and the NOTPERF_CMD flag to rise (Section 9.1.24).
9.1.15
K_THERM
The K_THERM register contains the value used by the winding resistance thermal drift
compensation system (Section 7.6).
The available range is from 1 to 1.46875 with a resolution of 0.03125, as shown in Table 16.
9.1.16
ADC_OUT
The ADC_OUT register contains the result of the analog to digital conversion of the ADCIN
pin voltage; the result is available even if the supply voltage compensation is disabled.
Any attempt to write to the register causes the command to be ignored and the
NOTPERF_CMD flag to rise (Section 9.1.24).
Table 16.
Winding resistance thermal drift compensation coefficient
K_THERM [3..0]
Compensation coefficient
00
00
1
0
0
0
1
1.03125
11
10
1.4375
1
1
1
1
1.46875
Table 17.
ADC_OUT value and motor supply voltage compensation feature
VS
VADCIN / VREG
ADC_OUT
[4..0]
Compensation
coefficient
Greater than VS,nom + 50%
> 24/32
1
1
X
X
X
0.65625
VS,nom + 50%
24/32
1
1000
0.65625
VS,nom
16/32
1
0000
1
VS,nom – 50%
8/32
0
1000
1.968875
Lower than VS,nom – 50%
< 8/32
0
0
X
X
X
1.968875



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