Representative package visual — not an exact-product photographProduct referenceVendor-delivered DigiKey product/package image

Exact MPN15 sourced attributes1 source document

NXP USA Inc. · exact orderable part

PCF2127AT/2Y

IC RTC CLK/CAL I2C/SPI 20-SOIC

Type: Clock/Calendar
Interface: I²C, 2-Wire Serial
Time Format: HH:MM:SS (12/24 hr)
Date Format: YY-MM-DD-dd
Voltage - Supply: 1.8V ~ 4.2V
Voltage - Supply, Battery: 1.8V ~ 4.2V
Current - Timekeeping (Max): 1.5µA @ 3.3V
Features: Alarm, Leap Year, Square Wave Output, SRAM, TCXO/Crystal, Watchdog Timer
Operating Temperature: -40°C~85°C

Original manufacturerCommercial terms confirmed per lot

ManufacturerNXP USA Inc.

Package / case20-SOIC (0.295", 7.50mm Width)

Mounting typeSurface Mount

PackingTape & Reel (TR); Cut Tape (CT); Digi-Reel®

Technical parameters

Technical specifications

15 normalized values · 1 validated source

PCF2127AT/2Y technical parameters
Parameter	Value
Base Product Number	PCF2127 [1]
Current - Timekeeping (Max)	1.5µA @ 3.3V [1]
Date Format	YY-MM-DD-dd [1]
Features	Alarm, Leap Year, Square Wave Output, SRAM, TCXO/Crystal, Watchdog Timer [1]
Interface	I²C, 2-Wire Serial [1]
Mfr	NXP USA Inc. [1]
Memory Size	512B [1]
Mounting Type	Surface Mount [1]
Operating Temperature	-40°C~85°C [1]
Product Status	Active [1]
Time Format	HH:MM:SS (12/24 hr) [1]
Type	Clock/Calendar [1]
Voltage - Supply	1.8V ~ 4.2V [1]
Package / Case	20-SOIC (0.295", 7.50mm Width) [1]
Voltage - Supply, Battery	1.8V ~ 4.2V [1]

Catalog relationships

This page describes one orderable part. A family page helps select suffixes but never carries assumed stock or a price.

Related exact parts

Browse exact MPNs and compare their specifications. These links do not imply compatibility or interchangeability.