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CY8C20224, CY8C20324
CY8C20424, CY8C20524
Document Number: 001-41947 Rev. *D
Page 6 of 34
Document Conventions
Acronyms Used
The following table lists the acronyms that are used in this
document.
Units of Measure
A units of measure table is located in the Electrical Specifications
section. Table 7 on page 13 lists all the abbreviations used to
measure the PSoC devices.
Numeric Naming
Hexadecimal numbers are represented with all letters in
uppercase with an appended lowercase ‘h’ (for example, ‘14h’ or
‘3Ah’). Hexadecimal numbers may also be represented by a ‘0x’
prefix, the C coding convention. Binary numbers have an
appended lowercase ‘b’ (for example, 01010100b’ or
‘01000011b’). Numbers not indicated by an ‘h’, ‘b’, or 0x are
decimal.
Table 1. List of Acronyms
Acronym
Description
AC
Alternating Current
API
Application Programming Interface
CPU
Central Processing Unit
DC
Direct Current
GPIO
General Purpose IO
GUI
Graphical User Interface
ICE
In-Circuit Emulator
ILO
Internal Low Speed Oscillator
IMO
Internal Main Oscillator
IO
Input And Output
LSb
Least Significant Bit
LVD
Low Voltage Detect
MSb
Most Significant Bit
POR
Power On Reset
PPOR
Precision Power On Reset
PSoC®
Programmable System-on-Chip®
SLIMO
Slow IMO
SRAM
Static Random Access Memory
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