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MOSFET(73)
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Low On Resistance MOSFET for Li-ion Battery Protection(47)
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12V-30V Nch Dual MOSFET(47)
- KFCAB21B10L
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12V-30V Nch Dual MOSFET(47)
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Audio(325)
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ISD-Sprache-ICs(217)
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PowerSpeech-Serie(128)
- N584L020
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BandDirector-Serie(48)
- N567G030
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IoT-Plattform(18)
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W539A804
Der W539A804, ein Mitglied der ViewTalk® Produktfamilie, ist eine hochmoderne Lösung für elektronische Lernapplikationen, die bereichern, unterrichten und unterhalten.
Der hochleistungsstarke 8-Bit-Mikroprozessor (μP) enthält maximal 1 kB Arbeitsspeicher (RAM). Außerdem hat der W539A804 505 kB integrierten ROM und kann über den integrierten Serial Interface Manager (SIM) auf zusätzliche Inhalte in Nuvotons proprietären seriellen Speicherchips W55Fxx, W551Cxxx und W25Pxx zugreifen.
Der W539A804 kann MIDI-Dateien gleichzeitig auf acht Noten (Wavetable) wiedergeben, von denen zwei stattdessen für Sprache eingesetzt werden können. Beispiel: Zwei Kanäle können Gesprochenes im Vordergrund wiedergeben, während dies mit sechs Kanälen polyphonem MIDI vermischt wird (MIDI-Format 0). Die Instrument-Wellenformen sind im W539A804-Speicher abgelegt; und Sprache wird über μP-Firmware entweder in PCM oder Nuvotons proprietärem MDPCM-Format reproduziert.
Spannungsregler und Pumpenschaltkreis des W539A804 bieten optimalen Kontrast für ein 1024-Punkt-LC-Display (64 SEG x 16 COM), selbst bei geringem Batteriestand. Zudem ermöglichen programmierbare LCD-Funktionen und zweiseitiger deduzierter LCD-RAM einfachere Animationsverwaltung.
Schließlich bietet der W539A804 mehrere Energiemodi zur Minimierung der Verlustleistung entsprechend unterschiedlichen Sprach-, Melodie- und LCD-Anforderungen.