Detection of the number of events, 190 | Fujitsu MB89202, F202RA

CHAPTER 8 8/16-BIT CAPTURE TIMER/COUNTER

●Detection of the number of events

In the external clock mode, counter clear can be prohibited by the compare match counter clear mask bit (TCMSK) of the capture control register (TCCR) when a match is detected. Setting the compare match counter clear mask bit to "1" enables the event count detection function to be used. In this case, a compare match does not cause data to be re-loaded to the compare latch. To update the compare latch value, stop and restart the timer.

Figure 8.7-2shows counter function operation in the external clock mode in which TCMSK is used.

Figure 8.7-2 Counter Function Operation in External Clock Mode

EC
TSTR0=1
TDR0				7FH			FFH			55H
TCMSK=0
Compare latch						7FH				FFH
Counter clear
Counter value	Un-	00	00H	01H	02H	03H	7EH	7FH	00H	01H
Counter value	defined	00	00H	01H	02H	03H	7EH	7FH	00H	01H
TCMSK=1
Compare latch							7F
Counter clear
Counter value	Un-	00	00H	01H	02H	03H	7EH	7FH	80H	81H
Counter value	defined	00	00H	01H	02H	03H	7EH	7FH	80H	81H
TIF0
									TFCR0=1 (W)

190 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.

Fujitsu MB89202, F202RA manual Detection of the number of events, 190

Models: F202RA MB89202

CHAPTER 8 8/16-BIT CAPTURE TIMER/COUNTER

●Detection of the number of events

Figure 8.7-2shows counter function operation in the external clock mode in which TCMSK is used.

Figure 8.7-2 Counter Function Operation in External Clock Mode

TDR0

190

F202RA, MB89202 specifications