8XC196NP, 80C196NU USER’S MANUAL

Table A-6. Instruction Set (Continued)

Mnemonic

 

 

 

Operation

 

 

 

 

Instruction Format

 

 

 

 

 

RST

RESET SYSTEM. Initializes the PSW to zero,

 

 

 

the EPC/PC to FF2080H, and the pins and

RST

 

 

SFRs to their reset values. Executing this

 

 

(11111111)

 

instruction causes the RESET# pin to be

 

 

 

 

pulled low for 16 state times.

 

 

 

 

 

 

SFR ← Reset Status

 

 

 

 

 

 

 

Pin ← Reset Status

 

 

 

 

 

 

 

PSW ← 0

 

 

 

 

 

 

 

 

 

 

EPC/PC ← FF2080H

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PSW Flag Settings

 

 

 

 

 

 

Z

N

C

 

V

VT

ST

 

 

 

 

 

0

0

0

 

0

0

0

 

 

 

 

 

 

 

SCALL

SHORT CALL. Pushes the contents of the

 

 

 

program counter (the return address) onto

SCALL

cadd

 

the stack, then adds to the program counter

 

(00101xxx) (disp-low)

 

the offset between the end of this instruction

 

 

 

 

and the target label, effecting the call. The

 

 

 

offset must be in the range of –1024 to

NOTE:

The displacement (disp) is sign-

 

+1023.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

extended to 16-bits in the 64-

 

64-Kbyte mode:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Kbyte addressing mode and to 24

 

SP ← SP – 2

 

 

 

 

 

 

 

bits in the 1-Mbyte addressing

 

(SP) ← PC

 

 

 

 

 

 

 

 

mode. This displacement may

 

PC←PC+11-bit disp

 

 

 

 

 

cause the program counter to

 

1-Mbyte mode:

 

 

 

 

 

 

 

cross a page boundary in 1-Mbyte

 

 

 

 

 

 

 

 

mode.

 

SP ← SP – 4

 

 

 

 

 

 

 

 

(SP) ← PC

 

 

 

 

 

 

 

 

 

 

PC←PC+11-bit disp

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PSW Flag Settings

 

 

 

 

 

 

Z

N

C

 

V

VT

ST

 

 

 

 

—

—

— —

—

—

 

 

 

 

 

 

 

 

SETC

SET CARRY FLAG. Sets the carry flag.

 

 

 

C ← 1

 

 

 

 

 

 

 

SETC

 

 

 

 

 

 

 

 

 

 

 

(11111001)

 

 

 

PSW Flag Settings

 

 

 

 

 

 

Z

N

C

 

V

VT

ST

 

 

 

 

 

—

—

1

—

—

—

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A-36

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Intel Microcontroller, 80C196NU, 8XC196NP manual Rst, Scall
Page 340 Page 342

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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