CY8C20534, CY8C20434
CY8C20334, CY8C20234
Document Conventions
Acronyms Used
The following table lists the acronyms that are used in this doc-
ument.
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 or 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
Units of Measure
A units of measure table is located in the Electrical Specifica-
tions section. Table 6 on page 13 lists all the abbreviations used
to measure the PSoC devices.
Numeric Naming
Hexadecimal numbers are represented with all letters in upper-
case with an appended lowercase ‘h’ (for example, ‘14h’ or
‘3Ah’). Hexadecimal numbers are also 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 dec-
imals.
Document Number: 001-05356 Rev. *D
Page 6 of 34
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