Table A-7. Instruction Opcodes, Clrb Notb Negb

INSTRUCTION SET REFERENCE

	Table A-7. Instruction Opcodes
Hex Code	Instruction Mnemonic

00	SKIP
01	CLR
02	NOT
03	NEG
04	XCH Direct
05	DEC
06	EXT
07	INC
08	SHR
09	SHL
0A	SHRA
0B	XCH Indexed
0C	SHRL
0D	SHLL
0E	SHRAL
0F	NORML

10Reserved

11CLRB

12NOTB

13NEGB

14XCHB Direct

15DECB

16EXTB

17INCB

18SHRB

19SHLB

1A	SHRAB
1B	XCHB Indexed
1C	EST Indirect
1D	EST Indexed
1E	ESTB Indirect
1F	ESTB Indexed
20–27	SJMP
28–2F	SCALL
30–37	JBC
38–3F	JBS

40AND Direct (3 ops)

41AND Immediate (3 ops)

42AND Indirect (3 ops)

43AND Indexed (3 ops)

A-47

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.

Intel 8XC196NP Table A-7. Instruction Opcodes, Hex Code Instruction Mnemonic, Clrb Notb Negb

Models: Microcontroller 80C196NU 8XC196NP