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Fujitsu F202RA, MB89202 manual Timing Limit Exceeded Flag DQ5, 365

Models: F202RA MB89202

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CHAPTER 17 FLASH MEMORY

17.4.3Timing Limit Exceeded Flag (DQ5)

The timing limit exceeded flag is used to post that execution of the automatic algorithm has exceeded the time (internal pulse count) prescribed in the flash memory.

■Automatic Write/Erase

Bit5 indicates that execution of the automatic algorithm exceeded the time (internal pulse count) specified in flash memory. For an excess, bit5 outputs 1. Thus, if this bit outputs 1 while the automatic algorithm is operating, data writing or data erasing failed.

Bit5 indicates a failure when an attempt is made to write data into a non-blank area without erasing any data. In the case of such a failure, fixed data cannot be read from bit7 (data polling) and bit6 (toggle bit) remains unchanged (toggled). If the time limit is exceeded while there is a failure, "1" is set in bit5. In this case, note that the setting of bit5 to "1" does not indicate a flash memory failure but the incorrect use of flash memory. If bit5 is set to "1" as described above, execute a reset command.

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Fujitsu F202RA, MB89202 manual Timing Limit Exceeded Flag DQ5, 365
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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.