CHAPTER 13 UART

13.4.1Serial Mode Control Register (SMC)

The serial mode control register (SMC) specifies the parity setting, stop bit length, operating mode (data length), and synchronous/asynchronous mode, and enables/ disables UART serial clock output and serial data output.

■Serial Mode Control Register (SMC)

Figure 13.4-2 Serial Mode Control Register (SMC)

Address

bit7

bit6

bit5

bit4

bit3

bit2

bit1

bit0

Initial value

 

 

0028H

PEN

SBL

MC1

MC0

SMDE

 

 

SCKE

SOE 00000-00B

 

 

 

R/W

R/W

R/W

R/W

R/W

 

 

R/W

R/W

 

 

 

 

 

 

 

 

SOE

 

 

 

Serial data output enable bit

 

 

 

 

 

 

0 General-purpose port or 8-bit serial I/O data output pin

 

 

 

 

 

1

 

UART serial data output pin

 

 

 

 

 

 

 

SCKE

 

 

 

Clock output enable bit

 

 

 

 

 

 

0 General-purpose port or clock input pin for UART/8-bit serial I/O

 

 

 

 

 

1 UART clock output pin

 

 

 

 

 

 

 

SMDE

 

 

Synchronization mode selection bit

 

 

 

 

 

 

0 Synchronous transfer mode

 

 

 

 

 

 

 

1

 

Asynchronous transfer mode

 

 

 

 

 

 

 

 

 

 

 

 

Operating mode selection bits

 

 

 

 

 

MC1

 

 

MC0

Operating

Data written:

 

 

 

 

 

 

 

 

 

 

 

With parity

 

 

 

 

 

 

 

 

 

mode

Without parity

 

 

 

 

 

 

 

 

 

(PEN = 0)

 

(PEN = 1)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

0

0

7 bits

 

6 bits

 

 

 

 

 

0

 

 

1

1

8 bits

 

7 bits

 

 

 

 

 

1

 

 

0

2

8+1 bits

 

 

 

 

 

 

 

1

 

 

1

3

9 bits

 

8 bits

 

 

 

 

 

SBL

 

 

 

Stop bit length selection bit

 

 

 

 

 

 

0

 

2 bits

 

 

 

 

 

 

 

 

 

1

 

1 bit

 

 

 

 

 

 

 

 

 

PEN

 

 

 

 

Parity enable bit

 

 

 

 

 

 

 

0

 

Parity disabled

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

Parity enabled (TD8/TP in the SSD register allows choice of

R/W : Readable/Writable

 

 

even/odd.)

 

 

 

 

 

 

 

 

 

 

 

 

 

: Unused

 

 

 

 

 

 

 

 

 

 

 

:

Initial value

 

 

 

 

 

 

 

 

 

 

290

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Image 306
Fujitsu MB89202, F202RA manual Serial Mode Control Register SMC
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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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