CY8C27143 Datasheet, PDF (56/63 Pages) Cypress Semiconductor – PSoC Mixed Signal Array

CY8C27143, CY8C27243
CY8C27443, CY8C27543
CY8C27643
Document Conventions
Units of Measure
Table 46 lists the unit sof measures.
Table 46. Units of Measure
Symbol
dB
°C
fF
pF
kHz
MHz
rt-Hz
k

µA
mA
nA
pA
µs
Unit of Measure
decibels
degree Celsius
femto farad
picofarad
kilohertz
megahertz
root hertz
kilohm
ohm
microampere
milliampere
nanoampere
pikoampere
microsecond
Symbol
ms
ns
ps
µV
mV
mVpp
nV
V
µW
W
mm
ppm
%
Unit of Measure
millisecond
nanosecond
picosecond
microvolts
millivolts
millivolts peak-to-peak
nanovolts
volts
microwatts
watt
millimeter
parts per million
percent
Numeric Conventions
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.
Glossary
active high
1. A logic signal having its asserted state as the logic 1 state.
2. A logic signal having the logic 1 state as the higher voltage of the two states.
analog blocks
The basic programmable opamp circuits. These are SC (switched capacitor) and CT (continuous time) blocks.
These blocks can be interconnected to provide ADCs, DACs, multi-pole filters, gain stages, and much more.
analog-to-digital A device that changes an analog signal to a digital signal of corresponding magnitude. Typically, an ADC converts
(ADC)
a voltage to a digital number. The digital-to-analog (DAC) converter performs the reverse operation.
Application
programming
interface (API)
A series of software routines that comprise an interface between a computer application and lower level services
and functions (for example, user modules and libraries). APIs serve as building blocks for programmers that create
software applications.
asynchronous A signal whose data is acknowledged or acted upon immediately, irrespective of any clock signal.
Bandgap
reference
A stable voltage reference design that matches the positive temperature coefficient of VT with the negative
temperature coefficient of VBE, to produce a zero temperature coefficient (ideally) reference.
bandwidth
1. The frequency range of a message or information processing system measured in hertz.
2. The width of the spectral region over which an amplifier (or absorber) has substantial gain (or loss); it is
sometimes represented more specifically as, for example, full width at half maximum.
Document Number: 38-12012 Rev. *T
Page 56 of 63
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