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L6474HTR датащи(PDF) 2 Page - STMicroelectronics

номер детали L6474HTR
подробное описание детали  easySPIN ??fully integrated microstepping motor driver
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
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L6474HTR датащи(HTML) 2 Page - STMicroelectronics

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Contents
L6474
2/51
Doc ID 022529 Rev 2
Contents
1
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2
Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2
Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.3
Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4
Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.1
Pin list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5
Typical applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6
Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6.1
Device power-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6.2
Logic I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6.3
Charge pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6.4
Microstepping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.5
Absolute position counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.6
Step sequence control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.7
Enable and disable commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.8
Internal oscillator and oscillator driver . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.8.1
Internal oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.8.2
External clock source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.9
Overcurrent detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
6.10
Undervoltage lock-out (UVLO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
6.11
Thermal warning and thermal shutdown . . . . . . . . . . . . . . . . . . . . . . . . . 23
6.12
Reset and standby . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
6.13
Programmable DMOS slew-rate, dead-time and blanking-time . . . . . . . . 24
6.14
Integrated analog to digital converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
6.15
Internal voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24


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