Intel 87C196CA, Supplement To User’S Manual

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8XC196L
X SUPPLEMENT
Glossary-12
V
CC
rejection The property of an A/D converter that causes it to
ignore (reject) changes in V
CC
so that the actual
characteristic is unaffected by those changes. The
effectiveness of V
CC
rejection is measured by the ratio
of the change in V
CC
to the change in the actual
characteristic.
VPW Variable pulse-width. A forced high/low symbol
transition formatting scheme that tracks the duration
between two consecutive transitions and the level of
the bus, active or passive.
wait state Time spent waiting for an operation to take place.
Wait states are added to external bus cycles to allow a
slow memory device to respond to a request from the
microcontroller.
watchdog timer An internal timer that resets the microcontroller if
software fails to respond before the timer overflows.
WDT Watchdog timer. An internal timer that resets the
microcontroller if software fails to respond before the
timer overflows.
word Any 16-bit unit of data.
WORD An unsigned, 16-bit variable with values from 0
through 2
16
–1.
zero extension A method for converting data to a larger format by
filling the upper bit positions with zeros.
zero-offset error An ideal A/D converter’s first code transition occurs
when the input voltage is 0.5 LSB. Zero-offset error is
the difference between 0.5 LSB and the actual input
voltage that triggers an A/D converter’s first code
transition.