
P89V52X2_3
NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 03 — 4 May 2009
54 of 57
NXP Semiconductors
P89V52X2
80C51 with 256 B RAM, 192 B data EEPROM
11. Abbreviations
Table 48.
Acronym list
Acronym
Description
CRC
Cyclic Redundancy Check
EEPROM
Electrically Erasable Programmable Read-Only Memory
EMI
ElectroMagnetic Interference
IAP
In-Application Programming
I/O
Input/Output
LSB
Least Signicant Bit
MSB
Most Signicant Bit
PWM
Pulse Width Modulator
RC
Resistance-Capacitance
RETI
Return From Interrupt
SFR
Special Function Register
UART
Universal Asynchronous Receiver/Transmitter