MAX6917EO50+

Series:	--
Packaging:	Tube
Part Status:	Active
Type:	Clock/Calendar/Supervisor
Memory Size:	96B
Time Format:	HH:MM:SS (12/24 hr)
Date Format:	YY-MM-DD-dd
Interface:	I²C, 2-Wire Serial
Voltage - Supply:	4.5 V ~ 5.5 V
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Surface Mount
Package / Case:	20-SSOP (0.154", 3.90mm Width)
Supplier Device Package:	20-QSOP
Base Part Number:	MAX6917

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Introduction

The MAX6917EO50+ is a fast, low power, highly-integrated real time clock (RTC) device that provides accurate timekeeping and alarm management functions. The MAX6917EO50+ is designed to provide an interface between the host CPU, NAND flash, EEPROM, and other serial EEPROMs. The RTC includes a wake-up function, reset detection and an independent battery back-up supply.

Application Field of MAX6917EO50+

The MAX6917EO50+ application fields include a wide range of personal digital devices, including smart watches, home automation products, digital cameras, PDAs, MP3 players, and cellular phones. Other applications include handheld gaming systems, portable navigation devices, and e-book readers. The MAX6917EO50+ also supports a variety of industrial applications, including industrial process control and SCADA systems, as well as automotive applications such as ABS and airbag systems, powertrain control modules, and ECUs.

Working Principle of MAX6917EO50+

The MAX6917EO50+ uses a 32.768kHz crystal oscillator to maintain accurate timekeeping and to generate the required 1.024kHz clock output. The RTC is capable of generating an alarm event to the host applications processor or MCU in both the sleep and running states. The alarm information is then processed by the host system, and the corresponding actions are taken. The RTC also provides a 32-bit frequency divider for the 1.024kHz reference clock, for the generation of various other frequencies such as 1Hz, 4kHz, and 1ms. In addition, the MAX6917EO50+ includes a power-up/down function that allows the host MCU to receive an interrupt signal when the system\'s power is turned on or off. This power-down/up function is provided by two on-chip NAND flash memory cells, allowing the system to maintain a low power operation even when the system is powered off.

Conclusion

The MAX6917EO50+ is a fast and low power RTC that provides an accurate timekeeping solution for a wide range of applications. The RTC has a 32.768kHz crystal oscillator for accurate timekeeping and a wake-up/power-down circuit for low power operations. The device also features an independent battery back-up supply and 32-bit frequency dividers for different frequency generation. The MAX6917EO50+ is an ideal choice for a range of applications, including personal digital devices, industrial processes, and automotive systems.

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