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sample time
sample time uncertainty
sample window
sampled inputs
SAR
set
SFR
SHORT-INTEGER
sign extension
sink current
source current
SP
The period of time that the sample window is open.
(That is, the length of time that the input channel is
actually connected to the sample capacitor.)
The variation in the sample time.
The period of time that begins when the sample
capacitor is attached to a selected channel of an A/D
converter and ends when the sample capacitor is
disconnected from the selected channel.
All input pins, with the exception of RESET#, are
sampled inputs. The input pin is sampled one state
time before the read buffer is enabled. Sampling
occurs during PH1 (while CLKOUT is low) and
resolves the value (high or low) of the pin before it is
presented to the internal bus. If the pin value changes
during the sample time, the new value may or may not
be recorded during the read.
RESET# is a level-sensitive input. EXTINT is
normally a sampled input; however, the powerdown
circuitry uses EXTINT as a level-sensitive input
during powerdown mode.
Successive approximation register. A component of
the A/D converter.
The "1" value of a bit or the act of giving it a "1"
value. See also clear.
Special-function register.
An 8-bit, signed variable with values from –2
through +2
A method for converting data to a larger format by
filling the upper bit positions with the value of the
sign. This conversion preserves the positive or
negative value of signed integers.
Current flowing into a device to ground. Always a
positive value.
Current flowing out of a device from V
negative value.
Stack pointer.
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7
–1.
GLOSSARY
7
. Always a
CC
Glossary-9
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