ata5830 ATMEL Corporation, ata5830 Datasheet - Page 12
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ata5830
Manufacturer Part Number
ata5830
Description
Intelligent Stepper Motor Driver
Manufacturer
ATMEL Corporation
Datasheet
1.ATA5830.pdf
(23 pages)
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12
ATA6830
Figure 11. Cruise Control
Table 3. Frequency Ramp
In addition to the actual step frequency there is a maximum step frequency up to which
the actual step frequency can rise. To secure a correct operation at low supply voltages
the maximum value for the stepping frequency is smaller at low voltages. If the supply
voltage falls below the 9 V threshold, travel operation will suspend. To restart operation,
the supply voltage has to rise above 10.5 V. The relation of the maximum step fre-
quency and the supply voltage during operation is shown in Table 4.
frequency
minimum
(300 Hz)
frequency
present
Number
frequency
10
11
12
13
14
15
16
17
18
19
20
21
22
1
2
3
4
5
6
7
8
9
present position
Step Frequency (Hz)
1000
303
345
394
446
493
583
575
673
649
680
714
741
769
800
826
855
877
901
926
952
980
nominal
position
time t+1
nominal
positon
time t
Step Time (µs)
3300
2895
2540
2240
2030
1860
1740
1630
1540
1470
1400
1350
1300
1250
1210
1170
1140
1110
1080
1050
1020
1000
4575B–BCD–01/03
position