CHAPTER 8 8/16-BIT CAPTURE TIMER/COUNTER

16-bit mode

The values in TDR1 are compared with the counter values in the higher 8 bits of the 16-bit timer.

When the interval timer function is used, the higher 8 bits of the interval time are set. When the counter function is used, the higher 8 bits of the count value to be detected are set. The values in TDR1 are loaded to the higher 8 bits of the comparator data latch when matching the counter values of the 16-bit timer or when the count operation is started. The values written to TDR1 when the 16-bit counter is operating become valid after match detection. In the 16-bit mode, the count operation is controlled by the timer 0 control register (TCR0).

Note:

The values set in TDR0 and TDR1 when the interval function is used can be calculated from the expression shown below. However, the instruction cycle is affected by the clock mode and gear function.

16-bit data value = interval time/(count clock cycle instruction cycle) - 1

The higher 8 bits of the 16-bit data value are set in TDR1 and the lower 8 bits are set in TDR0.

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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.