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Product Detailed Parameters
- Description：IC RTC CLK/CALENDAR I2C 14SOIC
- Series：-
- Package：Tube
- Mfr：Renesas Electronics Corporation
- Type：Clock/Calendar
- Features：Alarm, Leap Year, Supervisor, Watchdog Timer
- Memory Size：-
- Time Format：HH:MM:SS (12/24 hr)
- Date Format：YY-MM-DD-dd
- Interface：I2C, 2-Wire Serial
- Voltage - Supply：2.7V ~ 5.5V
- Voltage - Supply, Battery：1.8V ~ 5.5V
- Current - Timekeeping (Max)：10µA ~ 20µA @ 2.7V ~ 5V
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：14-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：14-SOIC
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Overview
The X1228S14I-2.7A is a Real-Time Clock (RTC) and calendar integrated circuit manufactured by Renesas Electronics Corporation. It features an I2C, 2-wire serial interface for communication. The device operates within a supply voltage range of 2.7V to 5.5V, with battery backup support from 1.8V to 5.5V. Timekeeping current consumption ranges from 10µA to 20µA at the specified voltage levels. It is housed in a 14-SOIC package (0.154", 3.90mm width) and supports surface mount installation. The component functions as a clock/calendar type device.
Feature Summary
- Integrated real-time clock and calendar with HH:MM:SS time format (12/24 hour) and YY-MM-DD-dd date format.
- Includes alarm functionality, leap year compensation, supervisor reset, and watchdog timer features.
- Supports I2C, 2-wire serial interface for system connectivity.
Applications
- Systems requiring precise timekeeping and calendar tracking via I2C bus.
- Applications utilizing supervisory reset and watchdog timer protection.
- Devices needing low-power RTC operation with battery backup capabilities.
Procurement Notes
Verify component authenticity and condition upon receipt. Confirm that the specific suffix matches the required package and electrical specifications. Check for end-of-life status or obsolescence notices from the manufacturer prior to procurement planning.
Selection Notes
Select this part for designs requiring a dedicated RTC with integrated supervisory features in a 14-SOIC package. Ensure the system I2C address configuration aligns with the device's addressing scheme. Verify that the operating temperature range of -40°C to 85°C meets the environmental requirements of the target application.
Part Context
This component belongs to the X1228 family of real-time clocks. It provides combined timing, calendar, and supervisory functions in a single IC. The S14I designation typically indicates the 14-SOIC package variant within this product line.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided source material. Consult manufacturer documentation for direct pin-compatible alternatives if replacement is necessary.
FAQ
What is the supported battery backup voltage range?
The device supports a battery supply voltage range of 1.8V to 5.5V.
Does the X1228S14I-2.7A include a watchdog timer?
Yes, the component includes a watchdog timer feature along with supervisor reset capabilities.
What is the maximum current consumption during timekeeping?
The maximum current consumption during timekeeping is 20µA at supply voltages between 2.7V and 5V.
