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參數(shù)資料
| 型號： | UPD168113K9-9B4-A |
| 廠商： | NEC Corp. |
| 英文描述： | MOS INTEGRATED CIRCUIT |
| 中文描述： | 馬鞍山集成電路 |
| 文件頁數(shù)： | 36/50頁 |
| 文件大?。?/td> | 771K |
| 代理商： | UPD168113K9-9B4-A |
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Data Sheet S16423EJ2V0DS
36
μ
PD168113
11.7.4 Reference increment setting
D2 to D4 are sued to set a parameter that determines the pulse cycle at each step.
The reference increment is the pulse frequency set by address A that is divided by the reference increment setting.
So that the speed changes draw a typical S-shape curve, it is recommended to set a value of 8 ( (D4, D3, D2) = (1,
0, 0) ) .
Reference increment = pulse cycle (address A) /reference increment setting
D4
D3
D2
Reference Increment Setting
0
0
0
2
0
0
1
0
1
0
0
1
1
4
1
0
0
8
1
0
1
16
1
1
0
32
1
1
1
11.7.5 Table selection
This IC approximates the speed change curve during acceleration/deceleration operation to the shape S.
The speed change curve can be changed by selecting an internal table.
Table 1: S curve with abrupt speed change
Table 2: S curve with gentle speed change
Table 3: S curve with linear speed change (equivalent to trapezoid waveform)
D6
D5
Table Selection
0
0
Table 1
0
1
1
0
Table 2
1
1
Table 3
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