CHAPTER 13 UART

13.3Pins of UART

Pins relating to UART are the clock I/O pin (P30/UCK/SCK), serial data output pin (P31/UO/SO), and serial data input pin (P32/UI/SI).

■UART Relating Pins

●P30/UCK/SCK

This pin functions as the general-purpose I/O port (P30), UART clock I/O pin (UCK), or 8-bit serial clock I/O pin (SCK). When clock output is enabled (SMC: SCKE = 1), this pin functions as the UART clock output pin (UCK) regardless of the value in the corresponding port direction register. When this pin functions as the UART clock, do not use any external clock (SRC: CS1 and CS0 must be other than 00B). When using this pin as the UART clock input pin, disable clock output (SMC: SCKE = 0) and set it as the input port using the corresponding port direction register (DDR3: bit0 = 0). In this case, be sure to select the external clock (SRC: CS1 and CS0 = 00B).

●P31/UO/SO

This port functions as the general-purpose I/O port (P31), UART serial data output pin (UO), or 8-bit serial data output pin (SO). When serial data output is enabled (SMC: SOE = 1), this pin functions as the UART serial data output pin (UO) regardless of the value in the corresponding port direction register.

●P32/UI/SI

This port functions as the general-purpose I/O port (P32), UART serial data input pin (UI), or 8-bit serial data input pin (SI). When using this pin as the UART serial data input pin, set this pin as the input port by using the corresponding port direction register (DDR3: bit2 = 0).

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Fujitsu F202RA, MB89202 manual Pins of Uart, P30/UCK/SCK, P31/UO/SO, P32/UI/SI
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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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