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Name: MCP795B22T-I/ST
Brand: Microchip Technology
SKU: MCP795B22T-I/ST
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Microchip Technology MCP795B22T-I/ST

Part No.:: MCP795B22T-I/ST

Manufacturer:: Microchip Technology

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

Datasheet:: MCP795B22T-I/ST.pdf

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

In Stock:: 2941

Quantity:: Add To Cart

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MCP795B22T-I/ST Specifications

Package/Case:
14-TSSOP (0.173, 4.40mm Width)
Packaging:
Tape & Reel (TR)
Series:
-
ProductStatus:
Obsolete
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 ~ 5.5V
Voltage-SupplyBattery:
1.3V ~ 5.5V
Current-Timekeeping(Max):
1µA @ 1.8V ~ 5.5V
OperatingTemperature:
-40°C ~ 85°C
MountingType:
Surface Mount

MCP795B22T-I/ST this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including MCP795B22T-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 MCP795B22T-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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MCP795B22T-I/ST information

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Basic introduction and simple engineering application of MCP795B22T-I/ST

MCP795B22T-I/ST is a real-time clock (RTC) chip commonly used in electronic projects requiring accurate timekeeping functionalities. It features a wide operating voltage range, low power consumption, and integrated EEPROM memory for storing configuration data and timekeeping information.

Application Scenario:

In a digital alarm clock project, MCP795B22T-I/ST can be utilized to keep track of the current time and trigger alarms at specific intervals.

Circuit Design:

To create a digital alarm clock using MCP795B22T-I/ST, follow these steps:

1. RTC Connection:

Connect the necessary power and ground pins of MCP795B22T-I/ST to the corresponding power and ground rails of the microcontroller or development board. Ensure proper decoupling capacitors are used for stable operation.

2. Crystal Oscillator:

Connect an external crystal oscillator to the OSC1 and OSC2 pins of MCP795B22T-I/ST to provide a stable clock source for the real-time clock. Choose a crystal with the appropriate frequency based on the desired timekeeping accuracy.

3. Backup Power:

Provide a backup power source, such as a coin cell battery, to maintain timekeeping functionality in case of main power loss. Connect the battery to the VBAT pin of MCP795B22T-I/ST with proper polarity.

4. Alarm Configuration:

Program the alarm registers of MCP795B22T-I/ST using the microcontroller or development board. Set the desired alarm time and configure the alarm output pin to trigger an interrupt or drive an external alarm device.

5. User Interface:

Integrate a user interface, such as buttons and an LCD display, to set the alarm time and display the current time. Interface these components with the microcontroller or development board using GPIO pins.

Experiment Steps:

Step 1: Connect the MCP795B22T-I/ST to a microcontroller or development board according to the datasheet specifications.

Step 2: Program the microcontroller to communicate with the MCP795B22T-I/ST via the I2C or SPI interface to initialize the real-time clock and set the current time.

Step 3: Configure the alarm registers of MCP795B22T-I/ST to trigger an interrupt at a specific time.

Step 4: Connect an external buzzer or LED to the alarm output pin of MCP795B22T-I/ST to indicate the alarm activation.

Step 5: Test the digital alarm clock by setting different alarm times and verifying the alarm functionality.

Considerations:

- Power Consumption: Optimize power management to extend battery life in applications where MCP795B22T-I/ST is powered by a backup battery.

- Time Accuracy: Use a high-quality crystal oscillator and calibrate the real-time clock to ensure accurate timekeeping over extended periods.

- Interrupt Handling: Implement efficient interrupt handling routines in the microcontroller firmware to respond to alarm events promptly.

- User Interface Design: Design an intuitive user interface for setting alarm times and displaying the current time to enhance user experience.

- Backup Power Monitoring: Implement a mechanism to monitor the backup power source and alert the user when it needs replacement.

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6. What is the process for return or replacement of MCP795B22T-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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