CY8C21634, CY8C21534
CY8C21434, CY8C21334, CY8C21234
Document Number: 38-12025 Rev. *L
Page 7 of 42
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 2 on page 7 lists all the abbreviations used to
measure the PSoC devices.
Numeric Naming
Hexidecimal numbers are represented with all letters in
uppercase with an appended lowercase ‘h’ (for example, ‘14h’ or
‘3Ah’). Hexidecimal numbers may also be represented by a ‘0x’
prefix, the C coding convention. Binary numbers have an
appended lowercase ‘b’ (e.g., 01010100b’ or ‘01000011b’).
Numbers not indicated by an ‘h’, ‘b’, or 0x are decimal.
Table 2. Acronyms Used
Acronym
Description
AC
alternating current
ADC
analog-to-digital converter
API
application programming interface
CPU
central processing unit
CT
continuous time
DAC
digital-to-analog converter
DC
direct current
ECO
external crystal oscillator
EEPROM
electrically erasable programmable read-only
memory
FSR
full scale range
GPIO
general purpose IO
GUI
graphical user interface
HBM
human body model
ICE
in-circuit emulator
ILO
internal low speed oscillator
IMO
internal main oscillator
IO
input/output
IPOR
imprecise power on reset
LSb
least-significant bit
LVD
low voltage detect
MSb
most-significant bit
PC
program counter
PLL
phase-locked loop
POR
power on reset
PPOR
precision power on reset
PSoC®
Programmable System-on-Chip™
PWM
pulse width modulator
SC
switched capacitor
SLIMO
slow IMO
SMP
switch mode pump
SRAM
static random access memory
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