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X1243 The Intersil X1243 is a 16K 2-Wire Real Time Clock/Calendar/Alarm with integrated EEPROM. It offers low power consumption and operates from 1.8V to 5.5V.
Mfr Part #:

X1243

Available from 1 distributors
Mfr Name: Intersil
Intersil
The Intersil X1243 is a 16K 2-Wire Real Time Clock/Calendar/Alarm with integrated EEPROM. It offers low power consumption and operates from 1.8V to 5.5V.
✓ Total Stock: 200 pcs
$ Price Range: $1.92

X1243 Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Rayichip ✓
Non-Authorised Inventory information
200 pcs
On Request
200 pcs On Request 1 On Request On Request On Request On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

X1243 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
EEPROM Size
Interface
Mounting Type
Voltage
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X1243 Description

Short technical summary and product information.

The Intersil X1243 is a versatile Real Time Clock (RTC) with integrated clock/calendar circuits and two alarms, designed for accurate timekeeping. It utilizes a 32.768kHz crystal for precise tracking of seconds, minutes, hours, date, day, month, and years, including leap year correction.

 

This device features a 2-wire interface compatible with I2C, supporting data transfer rates up to 400kHz. It includes 2Kbytes of EEPROM for secure storage of critical user and configuration data, unaffected by power supply failures. The X1243 operates from a wide voltage range of 1.8V to 5.5V and boasts low power consumption, with an operating current of less than 1µA.

 

Key features include two settable alarms with interrupt output, a secondary power supply input with internal switch-over circuitry for backup power, and a 64-byte page write mode for the EEPROM. The device is available in compact 8-lead SOIC and 8-lead TSSOP packages, suitable for various space-constrained applications.

X1243 Quick Information

Product Type: Real Time Clock (RTC)
Canonical Name: X1243 16K (2K x 8), 2-Wire RTC Real Time Clock/Calendar/Alarm with EEPROM
Subcategory: Clock/Calendar ICs

X1243 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

X1243 Estimated Pricing

Qty Low High
1+ $1.92 $1.92

Estimated market price range - modelled values for guidance only, not live distributor offers.

X1243 Features

  • 16K 2-Wire RTC with integrated EEPROM
  • Two alarms with interrupt output
  • Low power CMOS operation <1µA
  • Wide 1.8V to 5.5V operating voltage
  • Available in SOIC and TSSOP packages

X1243 Applications

  • Accurate timekeeping and calendar functions
  • Non-volatile data storage
  • Low power embedded systems
  • Applications requiring alarm interrupts
  • I2C interface compatibility

X1243 FAQs

6 frequently asked questions generated from this part’s specifications.
What is the operating voltage range for the X1243?

The X1243 is fully operational from 1.8 to 5.5 volts.

What is the EEPROM size on the X1243?

The X1243 provides 2Kbytes of EEPROM.

What interface does the X1243 use?

The X1243 uses a 2-wire interface interoperable with I2C.

How many alarms does the X1243 have?

The X1243 has 2 alarms with an interrupt output.

What is the typical operating current for the X1243?

The X1243 has a low power CMOS design with an operating current of less than 1µA.

What package options are available for the X1243?

The X1243 is available in 8-lead SOIC and 8-lead TSSOP packages.

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