CHAPTER 12 A/D CONVERTER

12.5Interrupt of A/D Converter

A factor for an interrupt of the A/D converter is the following.

• Completion of conversion when A/D conversion functions are enabled

■Interrupt when A/D Conversion Functions are Enabled

When A/D conversion is completed, the interrupt request flag bit (ADC1: ADI) is set to "1". At this time, if

the bit for enabling an interrupt request is enabled (ADC2: ADIE = 1), an interrupt request to the CPU (IRQ8) occurs. Write "0" to the ADI bit using the routine for interrupt handling to clear the interrupt request.

The ADI bit is set when A/D conversion is completed, irrespective of the value of the ADIE bit.

Note:

When the ADI bit is "1", if the ADIE bit is enabled (changed from "0" to "1"), an interrupt request occurs immediately.

■Register and Vector Table Related to the Interrupt of the A/D Converter

Table 12.5-1 Register and Vector Table Related to the Interrupt of the A/D Converter

 

Register to set the interrupt level

Address of the vector table

Interrupt name

 

 

 

 

 

Register

Bit to be set

High order

Low order

 

 

 

 

 

 

 

IRQ8

ILR3 (007DH)

L81 (bit1)

L80 (bit0)

FFEAH

FFEBH

 

 

 

 

 

 

See Section "3.4.2 Steps in the Interrupt Operation " for the interrupt operation.

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Fujitsu MB89202, F202RA manual Interrupt of A/D Converter, IRQ8
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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.

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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.

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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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