CHAPTER 10 EXTERNAL INTERRUPT CIRCUIT 1 (EDGE)

10.2Configuration of External Interrupt Circuit 1

External interrupt circuit 1 comprises the following two blocks:

•Edge detecting circuits (0 to 2)

•External interrupt control 1 registers 1, 2 (EIC1, EIC2)

■Block Diagram of External Interrupt Circuit 1

Figure 10.2-1 Block Diagram of External Interrupt Circuit 1 (EIC1, EIC2)

Pin

 

 

 

 

 

 

 

 

 

 

 

P34/TO/INT10

Edge detecting circuit 1

 

Edge detecting circuit 0

 

 

 

 

10

Selector

 

 

 

 

10

Selector

 

Pin

 

 

01

 

 

 

 

01

 

P35/INT11

 

 

11

 

 

 

 

11

 

 

 

 

 

 

 

 

 

 

 

External interrupt 1

EIR1

SL11

SL10

EIE1

EIR0

SL01

SL00

EIE0

 

control register 1

 

(EIC1)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Interrupt request

bus

 

 

 

 

 

 

 

 

 

(IRQ0)

data

 

 

 

 

 

 

 

 

 

Interrupt request

 

 

 

 

 

 

 

 

 

(IRQ1)

 

 

 

 

 

 

 

 

 

Internal

Pin

 

 

 

 

 

 

 

 

 

 

P36/INT12

 

 

 

 

 

 

Edge detecting circuit 2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

10

Selector

 

 

 

 

 

 

 

 

 

 

01

 

 

 

 

 

 

 

 

 

 

11

 

 

 

 

 

 

 

 

 

 

 

 

External interrupt 1

 

 

 

 

 

 

 

 

 

 

 

control register 2

 

 

 

 

 

EIR2

SL21

SL20

EIE2

 

(EIC2)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Interrupt request (IRQ2)

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Fujitsu F202RA manual Configuration of External Interrupt Circuit, Block Diagram of External Interrupt Circuit 1 EIC1, EIC2
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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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