NXP Semiconductors
PCF2127
Accurate RTC with integrated quartz crystal for industrial applications
21. Abbreviations
Table 95. Abbreviations
Acronym
Description
ACK
ACKnowledge (I2C-bus)
AM
Ante Meridiem
BCD
Binary Coded Decimal
CDM
Charged Device Model
CMOS
Complementary Metal-Oxide Semiconductor
DC
Direct Current
GPS
Global Positioning System
HBM
Human Body Model
I2C
Inter-Integrated Circuit
IC
Integrated Circuit
LSB
Least Significant Bit
MCU
Microcontroller Unit
MSB
Most Significant Bit
PM
Post Meridiem
POR
Power-On Reset
PORO
Power-On Reset Override
PPM
Parts Per Million
RAM
Random Access Memory
RC
Resistance-Capacitance
RTC
Real Time Clock
SCL
Serial CLock line
SDA
Serial DAta line
SPI
Serial Peripheral Interface
SRAM
Static Random Access Memory
TCXO
Temperature Compensated Xtal Oscillator
Xtal
crystal
PCF2127
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 8 — 19 December 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
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