CHAPTER 16 WILD REGISTER FUNCTION

16.4Operations of the Wild Register Functions

This section describes the operation order of the wild register.

■Operation Order of the Wild Register Function

Table 16.4-1describes the operation order of the wild register. In the operation example column, it corrects data at address FC36H, from FFH to B5H.

Table 16.4-1 Operation Order of Wild Register

 

Operation

Operation example

 

 

 

 

Set an address of the wild register correspondence area to

Address: FC36H/data: FFH

1

WRARL0=36H

the address set register.

 

WRARH0=FCH

 

 

2

Set the correction data to the data setting register.

WRDR0=B5H

 

 

 

3

Set "1" to the address comparison EN00 bit.

WREN=01H

 

 

 

 

 

When address = FC36H is accessed

4

The wild register works at the time of address matching.

 

 

 

Data = B5H

 

 

 

■Wild Register Addresses List

Table 16.4-2lists the addresses corresponding to the wild register numbers.

Table 16.4-2 Wild Register Addresses List

 

Higher address

Lower address

Data

 

 

 

 

 

 

 

 

 

 

Register name

Address

Register name

Address

Register name

 

Address

 

 

 

 

 

 

 

 

1

WRARH0

040H

WRARL0

041H

WRDR0

 

042H

 

 

 

 

 

 

 

 

2

WRARH1

043H

WRARL1

044H

WRDR1

 

045H

 

 

 

 

 

 

 

 

356

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Fujitsu MB89202 Operations of the Wild Register Functions, Wild Register Addresses List, Operation Order of Wild Register
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F202RA, MB89202 specifications

The Fujitsu MB89202 and F202RA microcontrollers are part of the 16-bit microcontroller family, renowned for their robust performance and versatility in a variety of embedded system applications. These devices are tailored for high-efficiency operation across diverse industries, including automotive, consumer electronics, and industrial automation.

One of the main features of the MB89202 is its powerful CPU core, which operates at a clock speed of up to 20 MHz. This enables the microcontroller to perform complex calculations and consumer-grade applications seamlessly. The architecture is designed to handle multiple tasks effectively, making it suitable for real-time operations.

Memory capacity is a vital characteristic of the MB89202, featuring on-chip RAM and ROM configurations. The microcontroller can accommodate different memory variants, providing developers with flexibility in memory allocation based on their application requirements. This adaptability facilitates applications ranging from simple control systems to complex data processing tasks.

The F202RA variant extends the capabilities of the MB89202 by integrating advanced peripheral functions. It includes built-in timers, A/D converters, and serial communication interfaces, which are essential for interfacing with other hardware components or sensors. The availability of these peripherals reduces the need for additional external circuits, thus contributing to a more compact and cost-effective design.

In terms of power management, the MB89202 series employs advanced power-saving technologies. The microcontroller offers various low-power modes, enabling devices to conserve energy during idle times, making it highly suitable for battery-operated applications. This characteristic not only enhances the efficiency of devices but also extends their operational lifespan.

Moreover, the Fujitsu MB89202 series incorporates robust protection features, including watchdog timers and failure detection mechanisms. These safety features ensure reliable operation in critical systems, making them a preferred choice in applications where failure is not an option.

The MB89202 and F202RA microcontrollers also support a range of development tools and environments, including integrated development environments (IDEs) and software libraries, which facilitate rapid application development. With these tools, developers can efficiently prototype, debug, and optimize their applications.

In summary, the Fujitsu MB89202 and F202RA microcontrollers stand out with their efficient performance, extensive memory options, integrated peripherals, and power-saving capabilities, making them ideal for a wide array of embedded applications. Their reliability and robustness further enhance their attractiveness for designers seeking advanced microcontroller solutions.
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