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8XC196L X SUPPLEMENT
external address
f
far constants
far data
feedthrough
FET
full-scale error
hold latency
ideal characteristic
input leakage
input series resistance
integer
INTEGER
Glossary-4
A 21-bit address is presented on the microcontroller's
pins. The address decoded by an external device
depends on how many of these address pins the
external system uses. See also internal address.
Lowercase "f" represents the frequency of the internal
clock.
Constants that can be accessed only with extended
instructions. See also near constants.
Data that can be accessed only with extended instruc-
tions. See also near data.
The attenuation from an input voltage on the selected
channel to the A/D output after the sample window
closes. The ability of the A/D converter to reject an
input on its selected channel after the sample window
closes.
Field-effect transistor.
The difference between the ideal and actual input
voltage corresponding to the final (full-scale) code
transition of an A/D converter.
The time it takes the microcontroller to assert HLDA#
after an external device asserts HOLD#.
The characteristic of an ideal A/D converter. An ideal
characteristic is unique: its first code transition occurs
when the input voltage is 0.5 LSB, its full-scale (final)
code transition occurs when the input voltage is 1.5
LSB less than the full-scale reference, and its code
widths are all exactly 1.0 LSB. These properties result
in a conversion without zero-offset, full-scale, or
linearity errors. Quantizing error is the only error
seen in an ideal A/D converter.
Current leakage from an input pin to power or ground.
The effective series resistance from an analog input
pin to the sample capacitor of an A/D converter.
Any member of the set consisting of the positive and
negative whole numbers and zero.
A 16-bit, signed variable with values from –2
15
through +2
–1.
15
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