Datasheet A4988 (Allegro) - 6
| Fabricante | Allegro |
| Descripción | DMOS Microstepping Driver with Integrated Translator, 1/16th Step Resolution, and Automatic Decay Selection in 28-QFN (4x5) package |
| Páginas / Página | 20 / 6 — DMOS Microstepping Driver. A4988. with Translator and Overcurrent … |
| Formato / tamaño de archivo | PDF / 1.2 Mb |
| Idioma del documento | Inglés |
DMOS Microstepping Driver. A4988. with Translator and Overcurrent Protection. Time Duration. Symbol. Typ. Unit
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DMOS Microstepping Driver A4988 with Translator and Overcurrent Protection
t A tB STEP t t C D MS1, MS2, MS3, RESET, or DIR
Time Duration Symbol Typ. Unit
STEP minimum, HIGH pulse width tA 1 μs STEP minimum, LOW pulse width tB 1 μs Setup time, input change to STEP tC 200 ns Hold time, input change to STEP tD 200 ns Figure 1: Logic Interface Timing Diagram Table 1: Microstepping Resolution Truth Table
MS1 MS2 MS3 Microstep Resolution Excitation Mode
L L L Full Step 2 Phase H L L Half Step 1-2 Phase L H L Quarter Step W1-2 Phase H H L Eighth Step 2W1-2 Phase H H H Sixteenth Step 4W1-2 Phase 6 Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com
t A tB STEP t t C D MS1, MS2, MS3, RESET, or DIR
Time Duration Symbol Typ. Unit
STEP minimum, HIGH pulse width tA 1 μs STEP minimum, LOW pulse width tB 1 μs Setup time, input change to STEP tC 200 ns Hold time, input change to STEP tD 200 ns Figure 1: Logic Interface Timing Diagram Table 1: Microstepping Resolution Truth Table
MS1 MS2 MS3 Microstep Resolution Excitation Mode
L L L Full Step 2 Phase H L L Half Step 1-2 Phase L H L Quarter Step W1-2 Phase H H L Eighth Step 2W1-2 Phase H H H Sixteenth Step 4W1-2 Phase 6 Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com