8XC196LX SUPPLEMENT

maskable interrupts

All interrupts except stack overflow, unimplemented

 

opcode, and software trap. Maskable interrupts can be

 

disabled (masked) by the individual mask bits in the

 

interrupt mask registers, and their servicing can be

 

disabled by the DI (disable interrupt service)

 

instruction. Each maskable interrupt can be assigned

 

to the PTS for processing.

monotonic

The property of successive approximation converters

 

which guarantees that increasing input voltages

 

produce adjacent codes of increasing value, and that

 

decreasing input voltages produce adjacent codes of

 

decreasing value. (In other words, a converter is

 

monotonic if every code change represents an input

 

voltage change in the same direction.) Large differ-

 

ential nonlinearity errors can cause the converter to

 

exhibit nonmonotonic behavior.

MSB

Most-significant bit of a byte or most-significant byte

 

of a word.

MSW

Most-significant word of a double-word or quad-

 

word.

multiplexed bus

The configuration in which the microcontroller uses

 

both A20:0 and AD15:0 for address and also uses

 

AD15:0 for data. See also demultiplexed bus.

n-channel FET

A field-effect transistor with an n-type conducting

 

path (channel).

n-type material

Semiconductor material with introduced impurities

 

(doping) causing it to have an excess of negatively

 

charged carriers.

near constants

Constants that can be accessed with nonextended

 

instructions. Constants in page 00H are near

 

constants. See also far constants.

near data

Data that can be accessed with nonextended instruc-

 

tions. Data in page 00H is near data. See also far data.

no missing codes

An A/D converter has no missing codes if, for every

 

output code, there is a unique input voltage range

 

which produces that code only. Large differential

 

nonlinearity errors can cause the converter to miss

 

codes.

Glossary-6

 

 

 

 

 

 

 

 

 

 

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Intel 8XC196Kx, 8XC196Jx, 8XC196Lx, 87C196CA user manual Msb, Msw