Microprocessor Supervisory Circuits

General Description The MAX690A/MAX692A/MAX802L/MAX802M/MAX805L reduce the complexity and number of components required for power-supply monitoring and battery-control functions in microprocessor (µP) systems. They significantly improve system reliability and accuracy compared to separate ICs or

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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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I2C-Compatible RTC in a TDFN

General Description The MAX6900, I2C™-bus-compatible real-time clock (RTC) in a 6-pin TDFN package contains a real-time clock/calendar and 31-byte ✕ 8-bit wide of static random access memory (SRAM). The real-time clock/calendar provides seconds, minutes, hours, day, date, month, and year informat

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3.0V/3.3V Microprocessor Supervisory Circuits

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微处理器监控电路

MAX690系列监控电路减少了微处理器系统中的电源监控和电池控制功能所需的复杂性和元件数量。这些功能包括微处理器复位和备用电池切换、看门狗定时器、CMOS RAM写保护和电源故障警告。与单独的IC或分立元件相比，MAX690系列显著提高了系统的可靠性和精度。\n\n MAX690、MAX692和MAX694均采用8引脚封装，并提供四个功能：\n\n 启动、关断和掉电情况下的复位输出。 CMOS RAM、CMOS微处理器或其它低功耗逻辑的备用电池切换。 如果可选的看门狗定时器在指定时间内未切换，则提供复位脉冲。 1.3V阈值检测器，用于电 • 集成监控功能可节省电路板空间，同时充分保护基于微处理器的系统\n• 精密电压监控器\n• 4.65V（MAX690、MAX691、MAX694、MAX695）\n\n• 4.40V（MAX692、MAX693）\n\n\n\n\n• 电源工作正常/复位时间延迟\n• 50ms、200ms或可调\n\n\n\n\n• 看门狗定时器\n• 100ms、1.6s或可调\n\n\n\n\n• 备用电池电源开关\n\n• 电压监控器，监控有无电源故障或低电池电量警告\n\n• 外部元件数很少\n\n\n\n\n• 备用电池模式下功耗低，可延长电池使用时间\n• 待机电流：1µA\n\n\n\n\n•;

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I2C-Compatible RTC in a TDFN

General Description The MAX6900, I2C™-bus-compatible real-time clock (RTC) in a 6-pin TDFN package contains a real-time clock/calendar and 31-byte ✕ 8-bit wide of static random access memory (SRAM). The real-time clock/calendar provides seconds, minutes, hours, day, date, month, and year informat

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PLASTIC ENCAPSULATED DEVICES

General The MAX6900, I2C™-bus-compatible real-time clock (RTC) in a 6-pin SOT23 package contains a real-time clock/calendar and 31-byte x 8-bit wide of static random access memory (SRAM). The real-time clock/calendar provides seconds, minutes, hours, day, date, month, and year information. The en

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I2C-Compatible RTC in a TDFN

General Description The MAX6900, I2C™-bus-compatible real-time clock (RTC) in a 6-pin TDFN package contains a real-time clock/calendar and 31-byte ✕ 8-bit wide of static random access memory (SRAM). The real-time clock/calendar provides seconds, minutes, hours, day, date, month, and year informat

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I2C-Compatible RTC in a TDFN

General Description The MAX6900, I2C™-bus-compatible real-time clock (RTC) in a 6-pin TDFN package contains a real-time clock/calendar and 31-byte ✕ 8-bit wide of static random access memory (SRAM). The real-time clock/calendar provides seconds, minutes, hours, day, date, month, and year informat

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SPI-Compatible RTC in a TDFN

General Description The MAX6902 SPI™-compatible real-time clock contains a real-time clock/calendar and 31 x 8 bits of static random-access memory (SRAM). The real-time clock/calendar provides seconds, minutes, hours, day, date, month, year, and century information. A time/date programmable polle

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