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Intel 80C196NU, 8XC196NP, Microcontroller manual INTMASK1/WSR ← SP, Psw/Intmask ← Sp

Models: Microcontroller 80C196NU 8XC196NP

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8XC196NP, 80C196NU USER’S MANUAL

Table A-6. Instruction Set (Continued)

Mnemonic

 

 

 

Operation

 

 

 

Instruction Format

 

 

 

 

POPA

POP ALL. This instruction is used instead of

 

 

POPF, to support the eight additional

POPA

 

interrupts. It pops two words off the stack and

 

(11110101)

 

places the first word into the

 

 

 

 

 

 

 

 

 

INT_MASK1/WSR register pair and the

 

 

second word into the PSW/INT_MASK

 

 

register-pair. This instruction increments the

 

 

SP by 4. Interrupt calls cannot occur

 

 

immediately following this instruction.

 

 

INT_MASK1/WSR ← (SP)

 

 

 

 

 

SP ← SP + 2

 

 

 

 

 

 

 

PSW/INT_MASK ← (SP)

 

 

 

 

 

SP ← SP + 2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PSW Flag Settings

 

 

 

 

 

Z

N

C

V

VT

ST

 

 

 

 

✓

✓

✓

✓

✓

✓

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

POPF

POP FLAGS. Pops the word on top of the

 

 

stack and places it into the PSW. Interrupt

POPF

 

calls cannot occur immediately following this

 

(11110011)

 

instruction.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(PSW) ← (SP)

 

 

 

 

 

 

 

SP ← SP + 2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PSW Flag Settings

 

 

 

 

 

Z

N

C

V

VT

ST

 

 

 

 

✓

✓

✓

✓

✓

✓

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PUSH

PUSH WORD. Pushes the word operand

 

 

onto the stack.

 

 

 

 

 

PUSH waop

 

SP ← SP – 2

 

 

 

 

 

 

 

 

 

 

 

(110010aa) (waop)

 

(SP) ← (DEST)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PSW Flag Settings

 

 

 

 

 

Z

N

C

V

VT

ST

 

 

 

 

—

—

— —

—

—

 

 

 

 

 

 

 

 

 

 

 

 

 

A-34

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Page 339
Image 339
Intel 80C196NU, 8XC196NP, Microcontroller manual INTMASK1/WSR ← SP, Psw/Intmask ← Sp
Page 338 Page 340

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.