Reception Operations Operating Mode 2 Only

CHAPTER 13 UART

13.6.3Reception Operations (Operating Mode 2 Only)

When data is received at the serial data input pin, the internal reception shift register converts it from serial to parallel. If the data is correctly transmitted up to the stop bit(s), data in the internal shift register is transferred to the SIDR register, then "1" is set to the RDRF bit.

■Reception Operations (Operating Mode 2 Only)

If an overrun error or framing error occurs, the received data is not transmitted to the SIDR register, but the ORFE bit is set to "1".

For both RDRF and ORFE, data is fully received/transmitted with the final data bit (D8) set to "1", these flags go on when the stop bit at the end is detected. However, when the framing error occurs, the flag goes on regardless of the final data bit. An interrupt request to the CPU is generated when the flag goes on and interrupt request is enabled.

If the reception interrupt is enabled (SSD: RIE = 1), an interrupt request to the CPU (IRQ5) is generated. When the RDRF bit goes on, the received data is transmitted to the SIDR register.

Figure 13.6-7to Figure 13.6-9show the reception operations when parity is not used and the number of stop bits is "1" in operating mode 2.

Figure 13.6-7 Reception Operations in Operating Mode 2

Data
START	0	1	2	3	4	5	6	7	8	STOP
RDRF
Reception
interrupt

Figure 13.6-8 Operations in Operating Mode 2 when the Overrun Error Occurs

Data
START	0	1	2	3	4	5	6	7	8	STOP
RDRF=1
(reception buffer full)
ORFE
Reception interrupt

309

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 Reception Operations Operating Mode 2 Only, Reception Operations in Operating Mode

Models: F202RA MB89202