M48T201Y-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:	3V
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, Square Wave Output, Supervisor, Watchdog Timer, Y2K
Type:	Clock/Calendar
Part Status:	Obsolete
Packaging:	Tube

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M48T201Y-70MH1E is an integrated circuit (IC) designed by STMicroelectronics, providing an efficient and cost-effective solution for real-time clock (RTC) applications. It is an advanced and sophisticated device that integrates clock, calendar, and alarm functions, along with a pipelined memory that allows to store up to 64 bytes of data. The device provides several features such as a battery-backed SRAM, temperature-compensated oscillator, selectable tamper detect function and selectable clock source, making it suitable for a number of applications. Application FieldM48T201Y-70MH1E is primarily used as a Real Time Clock (RTC) in a variety of embedded applications like smart meters, wearables, automotive and industrial equipment, etc. Its versatile features make it ideal for applications that require high accuracy and dependability, it can store 64 bytes of ram and supports SPI, I2C and serial bus interfaces. Its wide temperature range, low-power consumption and advanced integrated functionalities make it an ideal choice for applications like smart meters, automotive systems, medical systems, home security, medical and industrial systems.Working PrincipleThe M48T201Y-70MH1E Real Time Clock is powered by a 32kHz crystal and has a quartz crystal temperature-compensated oscillator (OCXO) that helps provide accurate time keeping over temperature. It also has an integrated lithium battery which can provide backup power for up to 8 years. The device supports both SPI and I2C bus and serial bus interfaces, allowing for easy integration with other circuitry. The device also provides alarm interrupts, tamper detect enable and system reset output signals, providing additional security and error prevention features.The clock operates using a pipelined memory configuration, which provides low noise, high-speed data transfer. The integrated 64K of SRAM allows the device to store up to 64 bytes of data, which can be used for storing application-specific settings and logs, security codes, and other data.The device also has selectable clock sources, allowing users to select between quartz crystal and digital clock sources. Additionally, the device provides tamper detect functionality. This allows users to detect if the clock settings have been tampered with, providing a measure of security for critical applications.The device provides a standby mode and an active mode. In the standby mode, the power consumption is reduced to 55µA while in the active mode, the power consumption is 250µA. The device also features low-power alarm and interrupt features.In summary, M48T201Y-70MH1E is a cost-effective and efficient clock chip designed for real-time applications where accuracy and reliability are crucial. It provides advanced integrated features such as powered battery backup, temperature-compensated oscillator, selectable clock sources, tamper detect, and SPI, I2C and serial bus interfaces, which greatly enhance its performance applications.

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