CHAPTER 8 8/16-BIT CAPTURE TIMER/COUNTER

●16-bit mode

To operate timer 0 as the interval timer function in the 16-bit mode, the function must be set as shown in

Figure 8.6-4 .

Figure 8.6-4 Setting of Interval Timer Function in 16-bit Mode

 

bit7

bit6

bit5

bit4

bit3

bit2

bit1

bit0

TCCR

CPIF

CFCLR CPIEN CCMSK TCMSK EDGS1 EDGS0 RESV

 

 

 

 

 

 

Setting of 00

 

TCR1

TIF1

TFCR1 T1IEN

 

TCS12 TCS11 TCS10

TSTR1

 

 

 

 

 

1

1

1

 

TCR0

TIF0

TFCR0

T0IEN

CINV

TCS02 TCS01 TCS00 TSTR0

 

 

 

 

 

Setting of a value

 

 

 

 

 

 

other than 111

 

 

TCR2

 

 

 

 

 

 

PEN

TSEL

 

 

 

 

 

 

 

 

0

TDR1

 

Setting of higher 8 bits of interval time

 

 

TDR0

 

Setting of lower 8 bits of interval time

 

 

 

: Used bit

 

 

 

 

 

 

 

 

: Unused bit

 

 

 

 

 

 

0

: Set "0"

 

 

 

 

 

 

 

1

: Set "1"

 

 

 

 

 

 

 

In the 16-bit mode, timers are controlled by the timer 0 control register (TCR0), but the timer 1 control register (TCR1) must be initialized. The values to be set in the data register are the higher 8 bits of TDR1 and the lower 8 bits of TDR0 (16 bits in total). The values are compared with the 16-bit counter value. The 16 bits of the counter are cleared at the same time. Other operations in the 16-bit mode are the same as timer 0 operation in the 8-bit mode.

188

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Fujitsu MB89202, F202RA manual Setting of Interval Timer Function in 16-bit Mode, 188
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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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