8XC196LX SUPPLEMENT

byte

Any 8-bit unit of data.

BYTE

An unsigned, 8-bit variable with values from 0

 

through 28–1.

CCBs

Chip configuration bytes. The chip configuration

 

registers (CCRs) are loaded with the contents of the

 

CCBs after a reset.

CCRs

Chip configuration registers. Registers that define the

 

environment in which the microcontroller will be

 

operating. The chip configuration registers are loaded

 

with the contents of the CCBs after a reset.

channel-to-channel matching error

The difference between corresponding code

 

transitions of actual characteristics taken from

 

different A/D converter channels under the same

 

temperature, voltage, and frequency conditions. This

 

error is caused by differences in DC input leakage and

 

on-channel resistance from one multiplexer channel

 

to another.

characteristic

A graph of output code versus input voltage; the

 

transfer function of an A/D converter.

chip-select unit

The integrated module that selects an external

 

memory device during an external bus cycle.

clear

The “0” value of a bit or the act of giving it a “0”

 

value. See also set.

code

1) A set of instructions that perform a specific

 

function; a program.

 

2) The digital value output by the A/D converter.

code center

The voltage corresponding to the midpoint between

 

two adjacent code transitions on the A/D converter.

code transition

The point at which the A/D converter’s output code

 

changes from “Q” to “Q+1.” The input voltage corre-

 

sponding to a code transition is defined as the voltage

 

that is equally likely to produce either of two adjacent

 

codes.

code width

The voltage change corresponding to the difference

 

between two adjacent code transitions. Code width

 

deviations cause differential nonlinearity and nonlin-

 

earity errors.

Glossary-2

 

 

 

 

 

 

 

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Intel 8XC196Kx, 8XC196Jx, 8XC196Lx, 87C196CA user manual Byte