參數(shù)資料
型號： L9942XPTR
廠商： STMICROELECTRONICS
元件分類： 運(yùn)動控制電子
英文描述： STEPPER MOTOR CONTROLLER, 2.5 A, PDSO24
封裝： LEAD FREE, POWER, SSO-24
文件頁數(shù)： 29/40頁
文件大?。?/td> 664K
代理商： L9942XPTR
L9942
Appendix
Figure 15.
Stall Detection
0 1 2 3 45 67 876 5 432 1 0 12 3 4 56 7 8 765 4 3 2 1
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
012 3 456 7 8 76 5 4 32 1 0 123 4 5 67
87 6 5 4 3 2 1
Current Driver A
Current Driver B
STEP Signal
Adress of Current
Profile Entry
Phase Counter
Micro Stepping Mode: DIR=0
01 23 45 67 87 6 5 43 2 1 0 1 23 45 6 7 8 7 6 5 4 3 2 1
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
0 123 4 5 67 876 5 4 3 21 01 23 45 67
87 65 43 21
Current Driver A
Current Driver B
Micro Stepping Mode: DIR=1
0
Adress of Current
Profile Entry
Time
PWM activ detection
Load Current Rising During High Speed
PWM activ
counter
Stall
Threshold
Stall
Threshold
Activ
sampling and
threshold
Activ
sampling and
threshold
PWM activ
counter
PWM activ detection
Counter value is above threshold value.
bit6
bit7
D7
D6
D5
D4
D3
D2
D1
D0
Register 4
bit5
bit6
bit7
Reg3
Register 5
bit5
bit6
bit7
Stall
Time
Threshold
16us *
No
Stall Signal
012 3
45 67 8 7
65 43 21 0 1
23 4 5
67 8 7
6 5 4 3
2
1
0
1
2 3
4
5 6
7 8 9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
0 1
23 45 67 8 7
65 4 3
21 0 1
2 3 4 5
67
876 5
43 21
Current Driver A
Current Driver B
STEP Signal
Adress of Current
Profile Entry
Phase Counter
Micro Stepping Mode: DIR=0
0 1
23 4567 8 76 5 4321 0 1
2 3
4 5 678 7
6 5
4 3 2
1
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9
8 7
6 5
4
3 2 1
0 1
2 3 4567 8 7
6 5
4 3 210 1
2 3
4 5 67
8 7
65 4321
Current Driver A
Current Driver B
Micro Stepping Mode: DIR=1
0
Adress of Current
Profile Entry
Time
PWM activ detection
PWM activ
counter
Stall
Threshold
Stall
Threshold
Activ
sampling and
threshold
Activ
sampling and
threshold
PWM activ
counter
PWM activ detection
Stall Signal
Load Current Rising During Low Speed or Stall
Counter value is below threshold value.
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