Microprocessor Supervisory Circuits

General Description The MAX690 family of supervisory circuits reduces the complexity and number of components required for power supply monitoring and battery control functions in microprocessor systems. These include μP reset and backup-battery switchover, watchdog timer, CMOS RAM write protecti

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MAXIM

美信

微處理器監(jiān)控電路

MAX690系列監(jiān)控電路減少了微處理器系統(tǒng)中的電源監(jiān)控和電池控制功能所需的復(fù)雜性和元件數(shù)量。這些功能包括微處理器復(fù)位和備用電池切換、看門狗定時(shí)器、CMOS RAM寫保護(hù)和電源故障警告。與單獨(dú)的IC或分立元件相比，MAX690系列顯著提高了系統(tǒng)的可靠性和精度。\n\n MAX690、MAX692和MAX694均采用8引腳封裝，并提供四個(gè)功能：\n\n 啟動、關(guān)斷和掉電情況下的復(fù)位輸出。 CMOS RAM、CMOS微處理器或其它低功耗邏輯的備用電池切換。 如果可選的看門狗定時(shí)器在指定時(shí)間內(nèi)未切換，則提供復(fù)位脈沖。 1.3V閾值檢測器，用于電 ? 集成監(jiān)控功能可節(jié)省電路板空間，同時(shí)充分保護(hù)基于微處理器的系統(tǒng)\n? 精密電壓監(jiān)控器?4.65V (MAX690, MAX691, MAX694, MAX695)\n?4.40V (MAX692, MAX693)\n\n\n\n\n? 電源工作正常/復(fù)位時(shí)間延遲\n? 50ms、200ms或可調(diào)\n\n\n\n\n? 看門狗定時(shí)器\n? 100ms、1.6s或可調(diào)\n\n\n\n\n? 備用電池電源開關(guān)\n\n? 電壓監(jiān)控器，監(jiān)控有無電源故障或低電池電量警告\n\n? 電壓監(jiān)控器，監(jiān)控有無電源故障或低電池電量警告 \n\n\n\n\n? 備用電池模式下功耗低，可延長電池使用時(shí)間\n? 待機(jī)電;

ADI

亞德諾

20-Output, 76V, Serial-Interfaced VFD Tube Drivers

General Description The MAX6921/MAX6931 are 20-output, 76V, vacuum fluorescent display (VFD) tube drivers that interface a multiplexed VFD tube to a VFD controller, such as the MAX6850–MAX6853, or to a microcontroller. The MAX6921/MAX6931 are also ideal for driving static VFD tubes or telecom rel

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MAXIM

美信

20-Output, 76V, Serial-Interfaced VFD Tube Drivers

General Description The MAX6921/MAX6931 are 20-output, 76V, vacuum fluorescent display (VFD) tube drivers that interface a multiplexed VFD tube to a VFD controller, such as the MAX6850–MAX6853, or to a microcontroller. The MAX6921/MAX6931 are also ideal for driving static VFD tubes or telecom rel

文件：282.81 Kbytes 頁數(shù)：14 Pages

MAXIM

美信

Microprocessor Supervisory Circuits

General Description The MAX691A/MAX693A/MAX800L/MAX800M microprocessor (μP) supervisory circuits are pin-compatible upgrades to the MAX691, MAX693, and MAX695. They improve performance with 30μA supply current, 200ms typ reset active delay on power-up, and 6ns chip enable propagation delay. Featu

文件：157.01 Kbytes 頁數(shù)：16 Pages

MAXIM

美信

Microprocessor Supervisory Circuits

General Description The MAX691A/MAX693A/MAX800L/MAX800M microprocessor (μP) supervisory circuits are pin-compatible upgrades to the MAX691, MAX693, and MAX695. They improve performance with 30μA supply current, 200ms typ reset active delay on power-up, and 6ns chip enable propagation delay. Featu

文件：157.01 Kbytes 頁數(shù)：16 Pages

MAXIM

美信

Microprocessor Supervisory Circuits

General Description The MAX691A/MAX693A/MAX800L/MAX800M microprocessor (μP) supervisory circuits are pin-compatible upgrades to the MAX691, MAX693, and MAX695. They improve performance with 30μA supply current, 200ms typ reset active delay on power-up, and 6ns chip enable propagation delay. Featu

文件：157.01 Kbytes 頁數(shù)：16 Pages

MAXIM

美信

Microprocessor Supervisory Circuits

General Description The MAX691A/MAX693A/MAX800L/MAX800M microprocessor (μP) supervisory circuits are pin-compatible upgrades to the MAX691, MAX693, and MAX695. They improve performance with 30μA supply current, 200ms typ reset active delay on power-up, and 6ns chip enable propagation delay. Featu

文件：157.01 Kbytes 頁數(shù)：16 Pages

MAXIM

美信

Microprocessor Supervisory Circuits

General Description The MAX691A/MAX693A/MAX800L/MAX800M microprocessor (μP) supervisory circuits are pin-compatible upgrades to the MAX691, MAX693, and MAX695. They improve performance with 30μA supply current, 200ms typ reset active delay on power-up, and 6ns chip enable propagation delay. Featu

文件：157.01 Kbytes 頁數(shù)：16 Pages

MAXIM

美信

Microprocessor Supervisory Circuits

General Description The MAX691A/MAX693A/MAX800L/MAX800M microprocessor (μP) supervisory circuits are pin-compatible upgrades to the MAX691, MAX693, and MAX695. They improve performance with 30μA supply current, 200ms typ reset active delay on power-up, and 6ns chip enable propagation delay. Featu

文件：157.01 Kbytes 頁數(shù)：16 Pages

MAXIM

美信