8XC196NP, 80C196NU USER’S MANUAL

 

Table A-7. Instruction Opcodes (Continued)

Hex Code

Instruction Mnemonic

 

 

E6

EJMP

E7

LJMP

E8

ELD Indirect

E9

ELD Indexed

EA

ELDB Indirect

EB

ELDB Indexed

EC

DPTS

ED

EPTS

EE

Reserved (Note 1)

EF

LCALL

F0

RET

F1

ECALL

F2

PUSHF

F3

POPF

F4

PUSHA

F5

POPA

F6

IDLPD

F7

TRAP

F8

CLRC

F9

SETC

FA

DI

FB

EI

FC

CLRVT

FD

NOP

FE

DIV/DIVB/MUL/MULB (Note 2)

FF

RST

NOTES:

1.This opcode is reserved, but it does not generate an unimplemented opcode interrupt.

2.Signed multiplication and division are two-byte instructions. For each signed instruction, the first byte is “FE” and the second is the opcode of the corresponding unsigned instruction. For example, the opcode for MULU (3 operands) direct is “4C,” so the opcode for MUL (3 oper- ands) direct is “FE 4C.”

Table A-8 lists instructions along with their lengths and opcodes for each applicable addressing mode. A dash (—) in any column indicates “not applicable.”

A-52

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Intel 80C196NU, 8XC196NP, Microcontroller manual ELD Indirect
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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.
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