32 kHz watch circuits with adaptive motor pulse

FEATURES · 32 kHz oscillator, amplitude regulated with excellent frequency stability · High immunity of the oscillator to leakage currents · Time calibration electrically programmable and reprogrammable (via EEPROM) · A quartz crystal is the only external component required · Very low curre

文件：104.53 Kbytes 頁數(shù)：20 Pages

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32 kHz watch circuits with adaptive motor pulse

FEATURES · 32 kHz oscillator, amplitude regulated with excellent frequency stability · High immunity of the oscillator to leakage currents · Time calibration electrically programmable and reprogrammable (via EEPROM) · A quartz crystal is the only external component required · Very low curre

文件：104.53 Kbytes 頁數(shù)：20 Pages

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32 kHz oscillator, amplitude regulated with excellent frequency stability

文件：121.52 Kbytes 頁數(shù)：20 Pages

PHI

PHI

32 kHz oscillator, amplitude regulated with excellent frequency stability

文件：121.52 Kbytes 頁數(shù)：20 Pages

PHI

PHI

帶有自適應(yīng)電機脈沖的32 kHz表電路

PCA148x系列器件是CMOS集成電路，特別適合由電池供電、石英晶體控制的手表，帶有雙極步進電機。\nPCA1485U不得用于新設(shè)計。 32 kHz振蕩器，振幅調(diào)節(jié)式且具備極佳的頻率穩(wěn)定性\n振蕩器具有高耐漏電性\n電可編程且可重新編程的時間校準（通過 EEPROM）\n石英晶體是僅需的外部組件\n極低的電流消耗；典型為170 nA\n不同類型的雙極步進電機輸出\n通過自行適應(yīng)與所需電機扭矩相符的電機脈沖寬度，相比傳統(tǒng)電路最多能減少50%的電機電流\n因為在片上檢測感應(yīng)電機電壓，所以不會損失電機步進\n電池壽命用盡的指示\n用于精確定時的停止功能\n用于快速測試的電源上電復(fù)位\n用于測試表和IC中機械部件的各種測試模式;

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