8XC196NP, 80C196NU USER’S MANUAL

Table A-6. Instruction Set (Continued)

Mnemonic

 

 

 

 

Operation

 

 

 

 

Instruction Format

 

 

 

 

 

JNVT

JUMP IF OVERFLOW-TRAP FLAG IS

 

 

 

CLEAR. Tests the overflow-trap flag. If the

JNVT

cadd

 

flag is set, this instruction clears the flag and

 

(11010100) (disp)

 

passes control to the next sequential

 

 

 

 

instruction. If the overflow-trap flag is clear,

 

 

 

this instruction adds to the program counter

NOTE: The displacement (disp) is sign-

 

the offset between the end of this instruction

 

 

extended to 24 bits.

 

and the target label, effecting the jump. The

 

 

 

 

 

offset must be in range of –128 to +127.

 

 

 

if VT = 0 then

 

 

 

 

 

 

 

 

 

PC PC + 8-bit disp

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PSW Flag Settings

 

 

 

 

 

 

Z

 

N

 

C

V

VT

ST

 

 

 

 

 

 

0

 

 

 

 

 

 

 

 

 

JST

JUMP IF STICKY BIT FLAG IS SET. Tests

 

 

 

the sticky bit flag. If the flag is clear, control

JST

cadd

 

passes to the next sequential instruction. If

 

(11011000) (disp)

 

the sticky bit flag is set, this instruction adds

 

 

 

 

to the program counter the offset between the

 

 

 

end of this instruction and the target label,

NOTE: The displacement (disp) is sign-

 

effecting the jump. The offset must be in

 

 

extended to 24 bits.

 

range of –128 to +127.

 

 

 

 

 

 

 

 

 

 

 

 

 

if ST = 1 then

 

 

 

 

 

 

 

 

 

PC PC + 8-bit disp

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PSW Flag Settings

 

 

 

 

 

 

Z

 

N

 

C

V

VT

ST

 

 

 

 

— —

 

 

 

 

 

 

 

 

JV

JUMP IF OVERFLOW FLAG IS SET. Tests

 

 

 

the overflow flag. If the flag is clear, control

JV

cadd

 

passes to the next sequential instruction. If

 

(11011101) (disp)

 

the overflow flag is set, this instruction adds

 

 

 

 

to the program counter the offset between the

 

 

 

end of this instruction and the target label,

NOTE: The displacement (disp) is sign-

 

effecting the jump. The offset must be in

 

 

extended to 24 bits.

 

range of –128 to +127.

 

 

 

 

 

 

 

 

 

 

 

 

 

if V = 1 then

 

 

 

 

 

 

 

 

 

 

PC PC + 8-bit disp

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PSW Flag Settings

 

 

 

 

 

 

Z

 

N

 

C

V

VT

ST

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A-26

Page 331
Image 331
Intel 8XC196NP, 80C196NU, Microcontroller manual Jnvt Jump if OVERFLOW-TRAP Flag is

Microcontroller, 80C196NU, 8XC196NP specifications

The Intel 8XC196NP and 80C196NU microcontrollers are part of Intel's renowned 16-bit microcontroller series that gained popularity in the 1980s and 1990s for embedded systems applications. Designed for a variety of applications, these microcontrollers are characterized by their robust performance, versatility, and industry-standard architecture.

The 8XC196NP features an enhanced instruction set with over 100 instructions, allowing for efficient code execution. It operates at clock speeds up to 16 MHz, which contributes to improved performance in time-sensitive applications. The microcontroller is equipped with a 16-bit data bus, enabling more efficient data handling compared to its 8-bit predecessors, thus accommodating complex algorithms and large data sets.

In terms of memory architecture, the 8XC196NP supports an addressable memory space of up to 64 KB of program memory and 64 KB of data memory. This configuration provides sufficient space for large applications while ensuring fast data access. The microcontroller includes integrated features such as timers, serial I/O capabilities, and interrupt processing, which enhance its functionality for real-time applications and control mechanisms.

The 80C196NU, on the other hand, is designed for lower power operation, making it suitable for battery-powered devices. This microcontroller maintains similar features to the 8XC196NP while offering advancements that support low-power consumption. The 80C196NU can also function in a range of temperature environments, making it adaptable for industrial applications.

Both the 8XC196NP and 80C196NU support external memory interfacing, allowing designers to expand the system's capability by connecting additional ROM and RAM. This flexibility makes them appealing for developing complex systems, such as motor controls, industrial automation, and consumer electronics.

Another standout feature of these microcontrollers is their built-in debugging capabilities. Intel provided hardware and software tools that enabled developers to test and troubleshoot their applications effectively, reducing the development time and increasing reliability.

Overall, the Intel 8XC196NP and 80C196NU microcontrollers stand out for their dependability, versatility, and performance, contributing significantly to the evolution of embedded system design. Their legacy continues to influence modern microcontroller technology, ensuring their relevance in a wide array of applications today.