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Name: MCP795W21T-I/ST
Brand: Microchip Technology
SKU: MCP795W21T-I/ST
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Microchip Technology MCP795W21T-I/ST

Part No.:: MCP795W21T-I/ST

Manufacturer:: Microchip Technology

Package:: 14-TSSOP (0.173, 4.40mm Width)

Datasheet:: MCP795W21T-I/ST.pdf

Description:: IC RTC CLK/CALENDAR SPI 14-TSSOP

In Stock:: 3485

Quantity:: Add To Cart

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MCP795W21T-I/ST Specifications

Package/Case:
14-TSSOP (0.173, 4.40mm Width)
Packaging:
Tape & Reel (TR)
Series:
-
ProductStatus:
Active
Type:
Clock/Calendar
Features:
Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Unique ID, Watchdog Timer
MemorySize:
64B
TimeFormat:
HH:MM:SS:hh (12/24 hr)
DateFormat:
YY-MM-DD-dd
Interface:
SPI
Voltage-Supply:
1.8V ~ 3.6V
Voltage-SupplyBattery:
1.3V ~ 3.6V
Current-Timekeeping(Max):
1µA @ 1.8V ~ 5.5V
OperatingTemperature:
-40°C ~ 85°C
MountingType:
Surface Mount

MCP795W21T-I/ST this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including MCP795W21T-I/ST price, data-sheet, in-stock availability, technical difficulties. Also. Quickly Enter the access of compare listing to find out replaceable electronic parts. If you want to retrieve comprehensive data for MCP795W21T-I/ST to optimize the supply chain (including cross references, life-cycle, parametric, counterfeit risk, obsolescence managements forecasts), please contact to our Tech-supports team.

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MCP795W21T-I/ST information

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Basic introduction and simple engineering application of MCP795W21T-I/ST

MCP795W21T-I/ST is a real-time clock (RTC) module manufactured by Microchip Technology Inc., providing accurate timekeeping functionality for various applications. It integrates a crystal oscillator and a backup battery to maintain timekeeping even when the main power source is unavailable.

Application Scenario:

In projects requiring precise timekeeping, MCP795W21T-I/ST can be utilized to timestamp events, schedule tasks, or synchronize operations across multiple devices.

Circuit Design:

To implement a real-time clock using MCP795W21T-I/ST, follow these steps:

1. Module Integration:

Connect MCP795W21T-I/ST to the microcontroller or host system using the I2C or SPI interface. Ensure proper wiring and configure the communication protocol according to the datasheet specifications.

2. Power Supply:

Provide power to MCP795W21T-I/ST by connecting the VCC pin to a stable voltage source within the specified range. Additionally, connect a backup battery to the VBAT pin to maintain timekeeping during power outages.

3. Initialization:

Initialize MCP795W21T-I/ST by setting the current date and time, configuring alarm settings, and enabling the oscillator. Utilize the provided libraries or write custom firmware to interact with the module.

4. Timekeeping:

Utilize the read and write functions to access the current date and time registers of MCP795W21T-I/ST. Update the time regularly and synchronize it with the microcontroller's clock if necessary.

5. Alarm Functionality:

Implement alarm features to trigger events or wake up the system at specific times. Configure the alarm registers and interrupt settings to respond to predefined conditions.

Experiment:

To understand the functionality of MCP795W21T-I/ST, perform the following experiment:

1. Setup:

Connect MCP795W21T-I/ST to an Arduino Uno board using the I2C interface. Ensure proper wiring and power connections.

2. Initialization:

Write a sketch to initialize MCP795W21T-I/ST, set the current date and time, and configure an alarm to trigger after a specific interval.

3. Time Display:

Read the current date and time from MCP795W21T-I/ST and display it on the Arduino serial monitor or an attached LCD display.

4. Alarm Test:

Verify the alarm functionality by waiting for the programmed interval and observing the alarm trigger. You can use LEDs or serial output to indicate the alarm event.

5. Power Cycling:

Simulate a power outage by disconnecting the main power source. Verify that MCP795W21T-I/ST continues timekeeping using the backup battery.

Considerations:

When using MCP795W21T-I/ST in a project, consider the following:

- Backup Battery Life: Choose a suitable backup battery to ensure extended operation during power outages.

- Communication Protocol: Select the appropriate communication protocol (I2C or SPI) based on the microcontroller's capabilities and project requirements.

- Accuracy Requirements: Verify the accuracy of the RTC module and calibrate if necessary to meet application-specific timing requirements.

- Interrupt Handling: Implement robust interrupt handling routines to respond to alarm events or other time-sensitive tasks promptly.

- Power Consumption: Optimize power management to minimize the module's power consumption, especially when running on battery backup.

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6. What is the process for return or replacement of MCP795W21T-I/ST?

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(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

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