参数资料
型号: MC33970DWR2
厂商: Freescale Semiconductor
文件页数: 26/36页
文件大小: 0K
描述: IC GAUGE DRIVER SPI 24-SOIC
标准包装: 1
应用: 步进电机驱动器,2 相
输出数: 2
电流 - 输出: 100mA
电压 - 负载: 6.5 V ~ 26 V
电源电压: 4.5 V ~ 5.5 V
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 24-SOIC(0.295",7.50mm 宽)
供应商设备封装: 24-SOIC W
包装: 带卷 (TR)
FUNCTIONAL DEVICE OPERATION
LOGIC COMMANDS AND REGISTERS
Table 21. Velocity Table (continued)
Velocity
Position
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
Time Between
Steps ( μ s)
555
546
538
529
521
514
507
500
493
487
481
475
469
464
458
453
448
444
439
434
430
426
422
418
414
410
406
403
399
396
393
389
Velocity
( μ Steps/s)
1801.8
1831.5
1858.7
1890.4
1919.4
1945.5
1972.4
2000.0
2028.4
2053.4
2079.0
2105.3
2132.2
2155.2
2183.4
2207.5
2232.1
2252.3
2277.9
2304.1
2325.6
2347.4
2369.7
2392.3
2415.5
2439.0
2463.1
2481.4
2506.3
2525.3
2544.5
2570.7
Velocity
Position
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
Time Between
Steps ( μ s)
295
294
293
291
290
289
287
286
285
284
282
281
280
279
278
277
275
274
273
272
271
270
269
268
267
266
265
264
263
262
261
260
Velocity
( μ Steps/s)
3389.8
3401.4
3413.0
3436.4
3448.3
3460.2
3484.3
3496.5
3508.8
3521.1
3546.1
3558.7
3571.4
3584.2
3597.1
3610.1
3636.4
3649.6
3663.0
3676.5
3690.0
3703.7
3717.5
3731.3
3745.3
3759.4
3773.6
3787.9
3802.3
3816.8
3831.4
3846.2
Velocity
Position
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
Time Between
Steps ( μ s)
226
225
224
224
223
222
222
221
221
220
220
219
218
218
217
217
216
216
215
215
214
214
213
212
212
211
211
210
210
209
209
208
Velocity
( μ Steps/s)
4424.8
4444.4
4464.3
4464.3
4484.3
4504.5
4504.5
4524.9
4524.9
4545.5
4545.5
4566.2
4587.2
4587.2
4608.3
4608.3
4629.6
4629.6
4651.2
4651.2
4672.9
4672.9
4694.8
4717.0
4717.0
4739.3
4739.3
4761.9
4761.9
4784.7
4784.7
4807.7
74
75
386
383
2590.7
2611.0
150
151
259
258
3861.0
3876.0
INTERNAL CLOCK CALIBRATION
Timing-related functions on the 33970 (e.g., pointer
velocities, acceleration, and Return To Zero Pointer speeds)
depend upon a precise, consistent time reference to control
the pointer accurately and reliably. Generating accurate time
references on an integrated circuit can be accomplished;
however, they tend to be costly due to the large amount of die
area required for trim pads and the associated trim
procedure. One possibility is an externally generated clock
signal; however, this requires a dedicated pin on the device
and controller. Another expensive approach would require
the use of an additional crystal or resonator.
The internal clock in the 33970 is temperature
independent and area efficient; however, it can vary up to 70
33970
Analog Integrated Circuit Device Data
26
Freescale Semiconductor
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