Modifications

{{POLImage|MP6500-02.png|250px|Schéma des broches nSLEEP et nFAULT sur le pilote MP6500.}}

{{POLImage|MP6500-02.png|250px|Schéma des broches nSLEEP et nFAULT sur le pilote MP6500.}}

Le MP6500 dispose d'une sortie {{overline|FAULT}} en drain ouvert qui est placé à la masse lorsque les FETs du pont-H sont désactivés suite à l'activation de la protection sur-courant, protection sur-tension, protection thermique et blocage de sous-tension. Le contrôleur connecte cette broche sur la broche {{overline|SLEEP}} par l'intermédiaire d'une résistance de 10 kΩ xxxxxx that acts as a {{overline|FAULT}} pull-up whenever SLEEP is externally held high, so no external pull-up is necessary on the {{overline|FAULT}} pin. Note that the carrier includes a 1.5 kΩ protection resistor in series with the {{overline|FAULT}} pin that makes it is safe to connect this pin directly to a logic voltage supply, as might happen if you use this board in a system designed for the pin-compatible {{pl|349|A4988 carrier}}. In such a system, the 10 kΩ resistor between {{overline|SLEEP}} and {{overline|FAULT}} would then act as a pull-up for {{overline|SLEEP}}, making the MP6500 carrier more of a direct replacement for the A4988 in such systems (the A4988 has an internal pull-up on its SLEEP pin).

Le MP6500 dispose d'une sortie {{overline|FAULT}} en drain ouvert qui est placé à la masse lorsque les FETs du pont-H sont désactivés suite à l'activation de la protection sur-courant, protection sur-tension, protection thermique et blocage de sous-tension. Le contrôleur connecte cette broche sur la broche {{overline|SLEEP}} par l'intermédiaire d'une résistance de 10 kΩ qui agit comme une résistance pull-up pour {{overline|FAULT}} lorsqu'un niveau haut est appliqué/maintenu sur SLEEP. Il n'est donc pas nécessaire d'appliquer une pull-up externe sur {{overline|FAULT}} pour pouvoir lire l'état de la broche. Note that the carrier includes a 1.5 kΩ protection resistor in series with the {{overline|FAULT}} pin that makes it is safe to connect this pin directly to a logic voltage supply, as might happen if you use this board in a system designed for the pin-compatible {{pl|349|A4988 carrier}}. In such a system, the 10 kΩ resistor between {{overline|SLEEP}} and {{overline|FAULT}} would then act as a pull-up for {{overline|SLEEP}}, making the MP6500 carrier more of a direct replacement for the A4988 in such systems (the A4988 has an internal pull-up on its SLEEP pin).

{{ambox|text=As a consequence of the connection between {{overline|SLEEP}} and {{overline|FAULT}}, active faults can pull the {{overline|SLEEP}} pin low (below 2.1 V) if it is not externally pulled up strongly enough. We recommend any pull-up resistor used with {{overline|SLEEP}} be 4.7 kΩ or stronger (or just connect {{overline|SLEEP}} directly to VCC).}}

{{ambox|text=As a consequence of the connection between {{overline|SLEEP}} and {{overline|FAULT}}, active faults can pull the {{overline|SLEEP}} pin low (below 2.1 V) if it is not externally pulled up strongly enough. We recommend any pull-up resistor used with {{overline|SLEEP}} be 4.7 kΩ or stronger (or just connect {{overline|SLEEP}} directly to VCC).}}