Product Specifications

CY8C29466/CY8C29566
CY8C29666/CY8C29866
Document Number: 38-12013 Rev. AB Page 56 of 67
Document Conventions
Units of Measure
Tab le 46 lists the unit sof measures.
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 decimals.
Table 46. Units of Measure
Symbol Unit of Measure Symbol Unit of Measure
dB decibels ms millisecond
°C degree Celsius ns nanosecond
fF femto farad ps picosecond
pF picofarad µV microvolts
kHz kilohertz mV millivolts
MHz megahertz mVpp millivolts peak-to-peak
rt-Hz root hertz nV nanovolts
k kilohm V volts
 ohm µW microwatts
µA microampere W watt
mA milliampere mm millimeter
nA nanoampere ppm parts per million
pA pikoampere % percent
µs microsecond
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
(ADC)
A device that changes an analog signal to a digital signal of corresponding magnitude. Typically, an ADC converts
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.