12.4.3 A/D Data Register Addh and Addl | Fujitsu MB89202, F202RA

CHAPTER 12 A/D CONVERTER

12.4.3A/D Data Register (ADDH and ADDL)

A/D data register (ADDH and ADDL) stores the results of A/D conversion at 10-bit A/D conversion.

The high-order 2 bits of 10-bit data correspond to the ADDH register. The low-order 8 bits correspond to the ADDL register.

■A/D Data Register (ADDH and ADDL)

Figure 12.4-4shows the bit configuration of the A/D data registers.

Figure 12.4-4 A/D Data Registers (ADDH and ADDL)

ADDH (A/D data register H)

Address bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0 Initial value

0032H

ADDL (A/D data register L)

------XXB

R R

Address bit7		bit6	bit5	bit4	bit3	bit2	bit1	bit0 Initial value
0033H									XXXXXXXXB
	R	R	R	R	R	R	R	R

R: Read only X : Undefined

Of the 10-bit A/D data, the high-order 2 bits correspond to bits 1 and 0 in the ADDH register. The low- order 8 bits correspond to bits 7 to 0 in the ADDL register.

●When A/D conversion functions are enabled

When A/D conversion is activated, after about 38 instruction cycles, the data on the conversion results are fixed and stored to these registers. Therefore, after A/D conversion, read these registers (conversion results), write "0" to the ADI bit (bit3) in the ADC1 register until the next A/D conversion is completed, and clear the flags after A/D conversion. During A/D conversion, the values in these registers are not determined. When A/D conversion functions are enabled, these registers function as read-only registers.

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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.

Fujitsu MB89202 12.4.3 A/D Data Register Addh and Addl, When A/D conversion functions are enabled

Models: F202RA MB89202