CHAPTER 10 PROGRAMMING THE NONVOLATILE MEMORY

The 87C196CB has 56 Kbytes of OTPROM (FF2000–FFFFFFH), while the 8XC196NT has only 32 Kbytes (FF2000–FF9FFFH). The 87C196CB’s programming signals, registers, and proce- dures are the same as those of the 8XC196NT. This chapter describes the differences in memory mapping and programming circuits for the 87C196CB.

10.1 SIGNATURE WORD AND PROGRAMMING VOLTAGES

The 87C196CB’s programming voltages are the same of those of the 8XC196NT; however, the signature word differs. Table 10-1 lists the signature word and programming voltages.

Table 10-1. Signature Word and Programming Voltages

 

Device

Signature Word

Programming VCC

Programming VPP

 

 

 

 

 

 

 

 

Location

Value

Location

Value

Location

Value

 

 

 

 

 

 

 

 

 

 

87C196CB

 

0070H

87CBH

0072H

40H

0073H

0A0H

 

 

 

 

 

 

 

 

10.2 MEMORY MAP FOR SLAVE PROGRAMMING MODE

Because the 87C196CB has an additional 24 Kbytes of OTPROM, its memory map (Table 10-2) differs from that of the 8XC196NT. The remaining information on slave programming is correct for the 87C196CB.

10-1

Page 116
Image 116
Intel 87C196CB, 8XC196NT user manual Programming the Nonvolatile Memory, Signature Word and Programming Voltages

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.