CHAPTER 9 12-BIT PPG TIMER

9.5Operations of 12-bit PPG Timer Functions

The 12-bit PPG timer can be used as a 12-bit PPG because the output pulse cycle period and "H" pulse width can be set separately.

Example of Operations of 12-bit PPG Timer Functions

To operate the 12-bit PPG timer, the bits of the registers must be set as shown in Figure 9.5-1 .

Figure 9.5-1 Setting 12-bit PPG Timer

 

bit7

bit6

bit5

bit4

bit3

bit2

bit1

bit0

RCR21

RCK1

RCK0

HSC5

HSC4

HSC3

HSC2

HSC1

HSC0

RCR22

HSC11 HSC10 HSC9 HSC8 HSC7 HSC6

RCR23

RCEN

 

 

 

SCL5

SCL4

SCL3

SCL2

SCL1

SCL0

 

1

 

 

 

 

 

 

 

 

 

RCR24

: Used bit 1 : Set "1"

SCL11 SCL10 SCL9 SCL8 SCL7 SCL6

When 12-bit PPG outputs are enabled, the 12-bit counter starts counting from" 000H" in synchronization with the selected count clock and the PPG pin is maintained at "H" level until a count by the counter is synchronized with the compare value for the "H" width. The PPG pin is then maintained at "L" level until a count by the counter is synchronized with the compare value for the cycle period. At this time, the 12-bit counter is cleared and restarts counting from "000H". Because the "H" width and cycle period can be set separately, the timer can be used as a 12-bit PPG.

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Fujitsu F202RA, MB89202 manual Operations of 12-bit PPG Timer Functions, Setting 12-bit PPG Timer

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.