Port 0 pull-up setting register PUL0 | Fujitsu F202RA, MB89202

CHAPTER 4 I/O PORTS

Table 4.2-3lists the functions of the port 0 registers.

Table 4.2-3 Functions of Port 0 Registers

Register	Data	When being	When being written	Read/	Address	Initial value
name	Data	read	When being written	Write	Address	Initial value
name		read		Write

		Pin state is	Output latch of "0" is set and
	0	Pin state is	"L" level is output to the pin
	0	"L" level.	"L" level is output to the pin
Port 0 data		"L" level.	in output port mode.
			in output port mode.	R/W	0000H	XXXXXXXXB

register (PDR0)		Pin state is	Output latch of "1" is set and
			Output latch of "1" is set and
	1		"H" level is output to the pin
	1	"H" level.	"H" level is output to the pin
		"H" level.	in output port mode.
			in output port mode.

			Output transistor operation
Port 0 data	0	Read	is disabled and the pin is set
Port 0 data		Read	to serve as an input pin.	W	0001H
direction		prohibited				00000000B
direction		prohibited	Output transistor operation			00000000B
register (DDR0)		(write only)	Output transistor operation
	1		is enabled and the pin is set
			to serve as output pin.

R/W : Readable/Writable

W: Write only

X: Undefined

●Port 0 pull-up setting register (PUL0)

The bits of the pull-up setting register correspond to the pins of port 0 in one-to-one correspondence. When the pull-up resistor is selected by using the pull-up setting register, the pin will be at "H" level (pull-up state) instead of Hi-Z during stop (SPL = 1). During a reset, however, the pull-up is invalid and the pin remains at Hi-Z.

Figure 4.2-2shows the pull-up resistor settings assigned to the values of the bits of the port 0 pull-up register.

Figure 4.2-2 Pull-up Resistor Settings (PUL0)

Address	bit7	bit6	bit5	bit4	bit3	bit2	bit1	bit0	Initial value
0070H	PUL07 PUL06 PUL05 PUL04 PUL03 PUL02						PUL01 PUL00		00000000B
	R/W	R/W	R/W	R/W	R/W	R/W	R/W	R/W

R/W : Readable/Writable

: Initial value

PUL03	PUL02	PUL01	PUL00
P03 pull-up OFF	P02 pull-up OFF	P01 pull-up OFF	P00 pull-up OFF
P03 pull-up ON	P02 pull-up ON	P01 pull-up ON	P00 pull-up ON
PUL07	PUL06	PUL05	PUL04
P07 pull-up OFF	P06 pull-up OFF	P05 pull-up OFF	P04 pull-up OFF
P07 pull-up ON	P06 pull-up ON	P05 pull-up ON	P04 pull-up ON

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, MB89202 manual Port 0 pull-up setting register PUL0, Pull-up Resistor Settings PUL0

Models: F202RA MB89202

CHAPTER 4 I/O PORTS

XXXXXXXXB

●Port 0 pull-up setting register (PUL0)

Figure 4.2-2shows the pull-up resistor settings assigned to the values of the bits of the port 0 pull-up register.

Figure 4.2-2 Pull-up Resistor Settings (PUL0)

Address

PUL03

PUL02

PUL01

PUL00

PUL07

PUL06

PUL05

PUL04

F202RA, MB89202 specifications