M48T37Y-70MH1E

Interface:	Parallel
Base Part Number:	M48T
Supplier Device Package:	44-SOH
Package / Case:	44-BSOP (0.337", 8.56mm Width) requires SNAPHAT
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 70°C
Current - Timekeeping (Max):	3mA @ 4.5V ~ 5.5V
Voltage - Supply, Battery:	--
Voltage - Supply:	4.5 V ~ 5.5 V
Series:	Timekeeper®
Date Format:	YY-MM-DD-dd
Time Format:	HH:MM:SS (24 hr)
Memory Size:	--
Features:	Alarm, Leap Year, Watchdog Timer
Type:	Clock/Calendar
Part Status:	Obsolete
Packaging:	Tube

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M48T37Y-70MH1E is a Real Time Clock (RTC) device, which can measure time precisely with its built-in watchdog timer. It has 4KB of SRAM for data storage, a 14-bit real time counter, and an 8-byte non-volatile time counter. M48T37Y-70MH1E could be used in many applications, such as timekeeping, data logging, or user interface control. It is commonly used in microcontroller systems and embedded applications to keep track of time and date reliably and with high accuracy. This device can also be used as a clock for other components, such as a power-save mode controller, a digital signal processor, or a microcontroller.This circuit is composed of a quartz crystal oscillator, a real-time counter and a non-volatile memory. The quartz crystal oscillator generates the signal that is used to keep time, while the real-time counter is used to keep track of the time since the oscillator was last reset. The non-volatile memory is used to store the time/date information permanently so that it is not lost if power is removed from the circuit.The oscillator of the M48T37Y-70MH1E is a quartz crystal that is tuned to a specific frequency. It is connected to a voltage-controlled oscillator (VCO) which is used to ensure that the frequency of the oscillator stays constant. The VCO is also used to generate a signal which is used to control the frequency of an interrupt signal that is sent out to the microcontroller system.The real-time counter of the M48T37Y-70MH1E contains two registers. The first register stores the current time, while the second register stores the amount of time since the oscillator was last reset. This information is used to ensure that the RTC device keeps accurate time and is not affected by changes in temperature or other environmental conditions.The non-volatile memory of the M48T37Y-70MH1E is used to store the time/date information permanently, even if power is removed from the device. The memory is composed of four bytes and each byte has 8 bits. These bits are used to store the hours, minutes, seconds and day of the week in binary form.The M48T37Y-70MH1E device is designed to fit into standard DIP packages and is electrically compatible with most microcontroller systems. It also requires a very low amount of power to operate, making it an ideal choice for applications where power consumption is a concern.In conclusion, the M48T37Y-70MH1E real time clock is a reliable and accurate device that is easy to use and ideal for a wide range of microcontroller systems and embedded applications. It combines a quartz crystal oscillator, a real-time counter and a non-volatile memory to keep accurate track of time and date, making it an ideal choice for applications that require reliable and accurate timekeeping.

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