CHAPTER 3 CPU

Table 3.7-2 Explanation of Functions of Each Bit in the Standby Control Register (STBC)

 

Bit name

Description

 

 

 

 

 

 

 

This bit specifies transition to stop mode.

bit7

 

STP:

Writing "1" into this bit allows transition to stop mode.

 

Stop bit

Writing "0" into this bit does not affect operations.

 

 

 

 

 

This bit is always read with the value of "0".

 

 

 

 

 

 

 

This bit specifies transition to sleep mode.

bit6

 

SLP:

Writing "1" into this bit allows transition to sleep mode.

 

Sleep bit

Writing "0" into this bit does not affect operations.

 

 

 

 

 

This bit is always read with the value of "0".

 

 

 

 

 

 

 

This bit specifies external pin states in stop mode.

 

 

 

Writing "0" into this bit maintains states (levels) of the external pins at transition to

bit5

 

SPL:

stop mode.

 

pin state setting bit

Writing "1" into this bit sets states of the external pins to Hi-Z (states of pins for

 

 

 

 

 

which a pull-up resistor is specified are set to level "H").

 

 

 

This bit becomes "0" after a reset.

 

 

 

 

 

 

 

This bit specifies software reset.

bit4

 

RST:

Writing "0" into this bit generates a source of 4-instruction cycle internal reset.

 

Software reset bit

Writing "1" into this bit does not affect operations.

 

 

 

 

 

This bit is always read with the value of "1".

 

 

 

 

bit3

 

RESV:

This bit is always read with the value of "0".

 

Reserved bit

Writing a value into this bit does not affect operations.

 

 

 

 

 

 

bit2 to bit0

 

Unused bits

Values read out of these bits are undefined.

 

Writing values into these bits does not affect operations.

 

 

 

 

 

 

 

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Fujitsu F202RA, MB89202 manual Stp, Slp, Spl, Resv
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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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