PCF2127AT/2Y
- Mfr.Part #
- PCF2127AT/2Y
- Manufacturer
- NXP Semiconductors
- Package / Case
- 20-SOIC (0.295, 7.50mm Width)
- Datasheet
- Download
- Description
- IC RTC CLK/CAL I2C/SPI 20-SOIC
- Stock
- 3,558
- In Stock :
- 3,558
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- Manufacturer :
- NXP Semiconductors
- Product Category :
- Real Time Clocks
- Width :
- 7.5mm
- Interface :
- I2C, 2-Wire Serial
- Qualification Status :
- Not Qualified
- Published :
- 2003
- Memory Size :
- 512B
- Type :
- Clock/Calendar
- Mounting Type :
- Surface Mount
- Surface Mount :
- yes
- Number of Terminations :
- 20
- Peak Reflow Temperature (Cel) :
- 260
- Package / Case :
- 20-SOIC (0.295, 7.50mm Width)
- Time-Min :
- SECONDS
- JESD-30 Code :
- R-PDSO-G20
- Volatile :
- yes
- Factory Lead Time :
- 7 Weeks
- Feature :
- Alarm, Leap Year, Square Wave Output, SRAM, TCXO/Crystal, Watchdog Timer
- Time@Peak Reflow Temperature-Max (s) :
- NOT SPECIFIED
- Base Part Number :
- PCF2127
- Interrupt Capability :
- Y
- Voltage - Supply, Battery :
- 1.8V~4.2V
- Current - Timekeeping (Max) :
- 1.5μA @ 3.3V
- RoHS Status :
- ROHS3 Compliant
- Height Seated (Max) :
- 2.65mm
- Supply Voltage :
- 3.3V
- Date Format :
- YY-MM-DD-dd
- Pin Count :
- 20
- Terminal Position :
- Dual
- Information Access Method :
- I2C
- Power Supplies :
- 2/4V
- Time Format :
- HH:MM:SS (12/24 hr)
- Voltage - Supply :
- 1.8V~4.2V
- Number of Timers :
- 1
- Length :
- 12.8mm
- Operating Temperature :
- -40°C~85°C
- Packaging :
- Tape and Reel (TR)
- Moisture Sensitivity Level (MSL) :
- 3 (168 Hours)
- Terminal Pitch :
- 1.27mm
- Datasheets
- PCF2127AT/2Y

Real Time Clocks NXP Semiconductors PCF2127AT/2Y Overview
The Real Time Clocks NXP Semiconductors PCF2127AT/2Y is a highly integrated and efficient real-time clock/calendar optimized for low power consumption and enhanced stability in operation. Featuring both I2C and SPI communication interfaces, this component is designed to meet the stringent requirements of time-tracking and synchronization within complex electronic systems. Its compact 20SOIC package ensures it can be integrated into various hardware setups without requiring extensive space, making it an ideal choice for applications demanding high reliability and precision.
PCF2127AT/2Y Features
- Dual interface options with I2C and SPI for flexible integration.
- Low power consumption, enhancing battery life for portable devices.
- Provides clock, calendar, and alarm functions, all highly accurate and dependable.
- Integrated oscillator with an external crystal for superior time precision.
- Automatic backup switching to battery on power failure.
PCF2127AT/2Y Applications
- Consumer Electronics: Utilized in devices like smart watches and home automation systems for precise timekeeping and to enable scheduled tasks.
- Telecommunications: Employed in network infrastructure to maintain time synchronization across various communication equipment.
- Automotive Electronics: Used in dashboard electronics and infotainment systems to manage time-based functions and logging.
- Industrial Systems: Integral for time-stamping and real-time monitoring in manufacturing process controls and automation.
- Portable Medical Devices: Ensures accurate timekeeping in devices such as wearable health monitors and medical event recorders.
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