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CHAPTER 13 UART

Table 13.4-2 Explanation of Functions of Each Bit in the Serial Rate Control Register (SRC)

	Bit name	Description

bit7,	Unused bits	• The values read out from these bits are undefined.
bit6	Unused bits	• Writing values to these bits does not affect any operations.
bit6

		• This bit selects the clock rate in asynchronous transfer mode. However, when the
	CR:	dedicated baud rate generator is used (CS1 and CS0 = 11B), it is fixed at 1/8
	CR:	regardless of the value in the CR bit. Specifying an external clock or 8-bit PWM
bit5	Clock rate input
bit5	Clock rate input	timer output as the clock input, the baud rate is set to 1/16 or 1/64 of the
	selection bit
	selection bit	corresponding clock frequency, depending on the CR value.
		corresponding clock frequency, depending on the CR value.
		• This bit is not significant in synchronous transfer mode.

bit4,	CS1,CS0:	• These bits select the clock input.
bit4,	Clock input selection	• The clock input can be an external clock (UCK pin), 8-bit PWM timer, or
bit3	Clock input selection
bit3	bits	dedicated baud rate generator.
	bits	dedicated baud rate generator.

		• There are 8 types of baud rate in asynchronous transfer mode and 6 types of baud
bit2	RC2,RC1,RC0:	rate in synchronous transfer mode: 14 types of baud rate are selectable in total.
to	RC2,RC1,RC0:	• These bits are effective only when the dedicated baud rate generator is used for the
to	Baud rate selection bits
bit0	Baud rate selection bits	clock input. These bits are not significant when an external clock or 8-bit PWM
bit0
		timer output is used.

293 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 F202RA, MB89202 manual 293

Models: F202RA MB89202

CHAPTER 13 UART

Bit name

F202RA, MB89202 specifications