Page 77 - CITS - Electronic Mechanic - TT - 2024

ELECTRONICS MECHANIC - CITS

Uses of Comparison of 8051 with its other family members
Here are some specific uses of this comparison
1 Selecting the appropriate microcontroller: By comparing the features of the 8051 with its derivatives,
engineers can choose the most suitable microcontroller for their application. They can evaluate the additional
features and capabilities of each family member and determine which one best meets their requirements.

2 Code migration: By understanding the similarities and differences between the 8051 and its family members,
engineers can migrate code from one microcontroller to another. This can save time and effort in software
development and testing.
3 Upgrading existing systems: If an existing system is based on the 8051, engineers can compare it with the
features of the newer family members and determine whether an upgrade is necessary. They can evaluate the
additional features and benefits of the newer microcontrollers and decide whether an upgrade would improve
the performance or functionality of the system.

4 Learning about microcontroller architecture: By comparing the 8051 with its family members, students
and hobbyists can learn about microcontroller architecture and understand the tradeoffs between different
features and capabilities. This can help them make informed decisions when selecting a microcontroller for
their own projects.
5 Developing new applications: By understanding the additional features and capabilities of the 8051 family
members, engineers can develop new applications that require specific features such as an on-chip flash
memory, expanded interrupt structure, or power-down mode. This can lead to the development of more
advanced and sophisticated embedded systems.
Issues in Comparison of 8051 with its other family members
There are also some potential issues that should be considered:
1 Compatibility: While many of the family members are compatible with the 8051 in terms of instruction set
and pinout, there may still be some differences that could affect code migration. Engineers should carefully
evaluate the compatibility of the microcontrollers before attempting to migrate code.
2 Development tools: Different microcontrollers may require different development tools, such as compilers,
debuggers, and programmers. Engineers should ensure that the necessary tools are available and compatible
with the microcontroller they select.
3 Availability: Some family members may be more readily available than others, depending on the region or
market. Engineers should consider the availability of the microcontroller when selecting a suitable option.

4 Cost: The cost of the microcontroller may vary depending on its features and capabilities. Engineers should
evaluate the cost-benefit of selecting a particular microcontroller based on the requirements of the application.
5 Training and support: The availability of training and support resources may vary depending on the
microcontroller. Engineers should consider the availability and quality of training and support when selecting
a microcontroller.
6 Power consumption: While the 8051 family members are generally known for their low power consumption,
some microcontrollers may consume more power than others due to their additional features and capabilities.
Engineers should evaluate the power consumption of the microcontroller to ensure that it meets the
requirements of the application.

Register banks & their functioning

SFRs & their configuration for different applications
Registers are temporary storage locations inside any processor and a microcontroller that provide a fast way to
store data and address of the memory location where the data is to be stored.

If you want to manipulate data within CPU of microcontroller by performing addition, subtraction, and so on, we
cannot do that directly in the memory, but to do it you need some registers to process and store the data.
Microcontrollers contain several types of registers that can be classified according to their content or instructions
that operate in them.

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CITS : E & H - Electronics Mechanic - Lesson 34 - 42