PROGRAMMING THE NONVOLATILE MEMORY

 

 

 

 

VCC

 

20 pF

 

 

20 pF

 

 

 

XTAL1

XTAL2

 

100 kΩ

 

 

 

 

 

 

RESET#

 

 

Reset

+5.0V

VCC

 

V

 

1 kΩ

 

 

 

CC

 

1.0µF

READY/P5.6

74HC14

 

 

10µF

 

 

VSS

 

 

 

 

NMI

 

 

 

 

BUSWIDTH/P5.7

 

 

 

 

EA#

 

 

 

 

+12.50V

VPP

 

 

 

 

VCC

RD#/P5.3

 

 

 

 

VREF

 

 

 

 

 

P0.7/

 

 

OE#

CE#

 

PMODE.3

 

 

 

 

 

 

 

 

P0.6/

P1.3

 

A16

 

 

P1.2

 

A15

 

 

PMODE.2

 

 

 

P0.5/

P1.1

 

A14

 

 

 

 

 

 

 

PMODE.1

AD13:8

 

A13:8

 

 

P0.4/

 

 

VCC

 

 

 

 

PMODE.0

 

 

 

 

 

ANGND

 

 

 

 

270kΩ

ALE/P5.0

LE

OE#

 

 

 

 

 

27(C)512

 

P2.7/PACT#

AD7:0

 

A7:0

 

 

 

 

74LS373

O7:0

74HC14

 

 

 

 

ON = Programming

P2.5

 

 

 

 

 

 

 

 

P2.4

 

 

 

 

VCC

P2.3

 

 

 

 

P2.2

 

 

 

 

 

P2.1

 

 

 

 

270kΩ

 

 

 

 

 

 

P2.0/PVER

 

 

 

 

74HC14

87C196CB

 

 

 

ON = Error

 

 

 

 

 

 

 

 

 

 

 

 

 

A3228-01

Figure 10-1. Auto Programming Circuit

10.4 MEMORY MAP FOR SERIAL PORT PROGRAMMING

The 87C196CB’s memory map (Table 10-4) for serial port programming differs from that of the 8XC196NT. The remaining information on serial port programming is correct for the 87C196CB.

10-3

Page 118
Image 118
Intel 87C196CB, 8XC196NT user manual Memory MAP for Serial Port Programming, Auto Programming Circuit

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.