參數(shù)資料
型號: 8XC196LX
英文描述: 8XC196Lx - 8XC196Lx Supplement to 8X196Kx. 8X196Jx. 87C196CA User's Manual
中文描述: 8XC196Lx - 8XC196Lx補編8X196Kx。 8X196Jx。 87C196CA用戶手冊
文件頁數(shù): 130/136頁
文件大?。?/td> 659K
代理商: 8XC196LX
8XC196LXSUPPLEMENT
Glossary-10
sample time uncertainty
The variation in the
sample time
.
sample window
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.
sampled inputs
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.
SAR
Successive approximation
register. A component of
the
A/D converter
.
set
The “1” value of a bit or the act of giving it a “1”
value. See also
clear
.
SFR
Special-function register.
An 8-bit, signed variable with values from –2
7
through +2
7
–1.
SHORT-INTEGER
sign extension
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.
sink current
Current flowing
into
a device to ground. Always a
positive value.
source current
Current flowing
out of
a device from V
CC
. Always a
negative value.
SP
Stack pointer.
special interrupt
Any of the three
nonmaskable
interrupts
(unimple-
mented opcode, software trap, or NMI).
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