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Product Detailed Parameters
- Description：IC RTC CLK/CALENDAR I2C 14TSSOP
- Series：2-Wire™
- Package：Bulk
- Mfr：Intersil
- Type：Clock/Calendar
- Features：Alarm, EEPROM, Leap Year, SRAM, Supervisor, Watchdog Timer, Y2K
- Memory Size：32KB
- Time Format：HH:MM:SS:hh (24 hr)
- Date Format：YY-MM-DD-dd
- Interface：I2C, 2-Wire Serial
- Voltage - Supply：4.5V ~ 5.5V
- Voltage - Supply, Battery：1.8V ~ 5.5V
- Current - Timekeeping (Max)：10µA ~ 20µA @ 2.7V ~ 5V
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Grade：-
- Qualification：-
- Package / Case：14-TSSOP (0.173", 4.40mm Width)
- Supplier Device Package：14-TSSOP
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Overview
The X1288V14IZ is a Real-Time Clock (RTC) IC manufactured by Intersil, housed in a 14-TSSOP package. It integrates a clock/calendar function with a 32KB EEPROM via an I2C, 2-wire serial interface. The device operates on a main supply voltage of 4.5V to 5.5V and supports battery backup from 1.8V to 5.5V. Timing current consumption ranges from 10µA to 20µA at 2.7V to 5V. It features date formats including YY-MM-DD-dd and time formats HH:MM:SS:hh (24-hour).
Feature Summary
- Integrated 32KB EEPROM for data storage alongside RTC functions.
- I2C, 2-wire serial interface for communication.
- Supports alarm, watchdog timer, leap year, Y2K compliance, and SRAM.
- Operates within -40°C to +85°C ambient temperature range.
Applications
- Systems requiring precise timekeeping with non-volatile data storage.
- Industrial equipment needing calendar and alarm functionalities.
- Battery-backed real-time clock applications.
Procurement Notes
Verify the manufacturer designation as Intersil or its successor entity Renesas Electronics, as corporate acquisitions may affect labeling. Confirm the specific suffix 'IZ' corresponds to the 14-TSSOP package and RoHS compliance status per the latest datasheet revision. Ensure compatibility with the required I2C bus speeds and voltage levels before procurement.
Selection Notes
Select this component when both RTC and significant non-volatile memory (32KB) are required in a single package. Verify that the system power rails align with the 4.5V–5.5V operating range and that the 1.8V–5.5V battery backup range covers the low-power state requirements. Check if the 14-TSSOP footprint fits the PCB layout constraints.
Part Context
This part belongs to the Intersil 2-Wire series of RTCs. It combines timekeeping with substantial EEPROM capacity, distinguishing it from simpler RTC-only devices. The 14-TSSOP package provides a compact surface-mount solution suitable for space-constrained designs requiring integrated memory and timing.
Replacement Considerations
Cross-reference with other Intersil/Renesas RTCs featuring similar EEPROM sizes and I2C interfaces. Verify pinout compatibility if substituting directly into existing layouts. Check for updated manufacturing sources under Renesas Electronics branding.
