Fujitsu F202RA, MB89202 manual PWM Control Register Cntr

CHAPTER 7 8-BIT PWM TIMER

7.4.1PWM Control Register (CNTR)

The PWM control register (CNTR) is used to select the operation mode (interval timer operation or PWM timer operation) of the 8-bit PWM timer, switch the resolution of the PWM timer functions, and select the count clock.

■PWM Control Register (CNTR)

Figure 7.4-2 PWM Control Register (CNTR)

Address	bit7 bit6	bit5	bit4	bit3	bit2	bit1	bit0 Initial value
0022H
	P/TX	P1	P0	TPE	TIR	OE TIE 0-000000B
	R/W	R/W	R/W	R/W	R/W	R/W	R/W

TIE Bit to enable an interrupt request

0Disables interrupt request output.

1Enables interrupt request output.

OE Bit to control the output pin

0Used as the general-purpose port (P50)

1Used as the output pin for the interval timer or PWM timer (PWM)

	Interrupt request flag bit
TIR	Read
	The interval timer used	The PWM
		timer used

0	The counter value does not
	match the settings.	Not changed

1The counter value matches the settings.

Write

Clears this bit.

Not changed. Does not affect other settings.

TPE Bit to enable the counter operation

0Stops the counter operation.

1Starts the counter operation.

P1	P0		Bits to select a clock
0	0		1 tINST
		Internal
0	1
		count	16 tINST
1	0	clock	64 tINST
1	1	Outputs an 8/16-bit capture timer/counter.
P/TX			Bit to select the operation mode

0Operates as the interval timer.

1Operates as the PWM timer.

tINST : Instruction cycle

R/W : Readable/Writable : Initial value

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