CHAPTER 1

GUIDE TO THIS MANUAL

This document is a supplement to the 8XC196NT Microcontroller User’s Manual. It describes the differences between the 87C196CB and the 8XC196NT. For information not found in this supplement, please consult the 8XC196NT Microcontroller User’s Manual (order number 272317) or the 87C196CB datasheet (87C196CA/87C196CB 20 MHz Advanced 16-Bit CHMOS Microcontroller with Integrated CAN 2.0, order number 272405).

1.1MANUAL CONTENTS

This supplement contains several chapters, an appendix, a glossary, and an index. This chapter, Chapter 1, provides an overview of the supplement. This section summarizes the contents of the remaining chapters and appendixes. The remainder of this chapter provides references to related documentation.

Chapter 2 — Architectural Overview — compares the features of the 87C196CB with those of the 8XC196NT and describes the 87C196CB’s internal clock circuitry.

Chapter 3 — Memory Partitions — describes the addressable memory space of the 84-pin and 100-pin 87C196CB, lists the peripheral special-function registers (SFRs), and provides tables of WSR values for windowing higher memory into the lower register file for direct access.

Chapter 4 — Standard and PTS Interrupts — describes the additional interrupts for the CAN (controller area network) peripheral and the SFRs that support those interrupts.

Chapter 5 — I/O Ports — describes the port 0 and EPORT differences for the 100-pin 87C196CB. Both port 0 and the EPORT are implemented as eight-bit ports on the 100-pin 87C196CB, but as four-bit ports (like the 8XC196NT) on the 84-pin 87C196CB.

Chapter 6 — Analog-to-digital (A/D) Converter — illustrates the SFRs that are affected by the implementation of port 0 as an eight-bit port.

Chapter 7 — CAN Serial Communications Controller — describes the 87C196CB’s integrat-

ed CAN controller and explains how to configure it. This integrated peripheral is similar to Intel’s standalone 82527 CAN serial communications controller, supporting both the standard and ex- tended message frames specified by the CAN 2.0 protocol parts A and B.

Chapter 8 — Special Operating Modes — illustrates the clock control circuitry of the 87C196CB.

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Intel 87C196CB, 8XC196NT user manual Chapter Guide to this Manual, Manual Contents
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8XC196NT, 87C196CB specifications

The Intel 87C196CB and 8XC196NT are microcontrollers from the C196 family, which was designed to meet the demands of embedded control technology. These microcontrollers are popular in various applications due to their robust architecture, extensive I/O capabilities, and specialized functionality, making them ideal for automotive, industrial, and communication systems.

The 87C196CB is distinguished by its 16-bit architecture, offering a balance of processing power and efficiency. It features a 16-bit data bus, which allows for fast data processing, and a 16-bit address bus, supporting up to 64KB of program memory. The microcontroller integrates on-chip memory, including 2KB of ROM and 128 bytes of RAM, which facilitates faster execution of programs and data handling.

One of the standout features of the 87C196CB is its versatility in I/O operations. It comes equipped with 32 general-purpose I/O lines that can be configured for various functions, including input, output, and interrupt handling. This flexibility enables developers to optimize the microcontroller for their specific application needs.

The 8XC196NT builds on the capabilities of its predecessor, offering advanced functionalities such as an enhanced instruction set and integrated peripherals. It includes additional features like timers, serial communication interfaces, and analog-to-digital converters, which expand its usability in complex embedded systems. The 8XC196NT supports multiple addressing modes, allowing for more efficient programming and memory management.

Both microcontrollers utilize innovative technologies that improve performance and power efficiency. The on-chip operating system support aids in real-time processing and multitasking, making them suitable for time-sensitive applications. Power management features are also incorporated, allowing these microcontrollers to operate in low-power modes, which is crucial for battery-operated devices.

The 87C196CB and 8XC196NT microcontrollers are characterized by their reliability and long service life, meeting the stringent demands of industrial applications. Their ability to perform tasks rapidly, combined with their diverse peripheral support, makes them popular choices among engineers and developers designing embedded systems. Overall, the Intel 87C196CB and 8XC196NT microcontrollers remain relevant in the rapidly evolving landscape of embedded technology, facilitating innovative solutions across various industries.
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