Datasheet
PCF2127AT All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 6 — 11 July 2013 2 of 86
NXP Semiconductors
PCF2127AT
Integrated RTC, TCXO and quartz crystal
Clock operating voltage: 1.2 V to 4.2 V
Low supply current: typical 0.65 A at V
DD
= 3.0 V and T
amb
=25C
3. Applications
Electronic metering for electricity, water, and gas
Precision timekeeping
Access to accurate time of the day
GPS equipment to reduce time to first fix
Applications that require an accurate process timing
Products with long automated unattended operation time
4. Ordering information
4.1 Ordering options
[1] Not to be used for new designs. Replacement part is PCF2127AT/2.
5. Marking
Table 1. Ordering information
Type number Package
Name Description Version
PCF2127AT SO20 plastic small outline package; 20 leads; body width 7.5 mm SOT163-1
Table 2. Ordering options
Product type number IC
revision
Sales item (12NC) Delivery form
PCF2127AT/1
[1]
1 935290953512 tube, dry pack
935290953518 tape and reel, 13 inch, dry pack
PCF2127AT/2 2 935299867518 tape and reel, 13 inch, dry pack
Table 3. Marking codes
Product type number Marking code
PCF2127AT/1 PCF2127AT
PCF2127AT/2 PCF2127AT