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Chapter 37 output compare, Overview, Features – FUJITSU MB91460 SERIES FR60 User Manual

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Chapter 37 Output Compare

1.Overview

Chapter 37 Output Compare

1. Overview

Output compare is a feature that compares the value set to the compare register with the count value of the
free-run timer, and reverses the level of the pins when they are equal.

2. Features

• Output wave form: Toggle output 4 channel

• Format:

16 bit compare register + Compare circuit

• Quantity:

4 groups = 8 channels (output compare channels 0/1, 2/3, 4/5, 6/7)

• Compatible timers:Output compare channels 0/1 use free-run timer 2

Output compare channels 2/3 use free-run timer 3

Output compare channels 4/5 use free-run timer 6

Output compare channels 6/7 use free-run timer 7

• Operation on compare match:

• Reversal of pin output value (toggle output)

• Free-run timer clear

• Interrupt generation

• Count precision: 4/F

CLKP

, 16/F

CLKP

, 32/ F

CLKP

, 64/ F

CLKP

(dependent on free-run timer)

• Toggle change width (T): 1 x count precision - 10000

H

x count precision

• Interrupt:

Compare-match interrupt

• Others:

Setting of initial output level value is possible (“H”/“L”)

Pins not used for OCU output can be used as general-use ports

0

0

1

1

Compare 0

Free-run Timer

Pin 0

Compare 1

Compare

Latch

Latch

Pin 1

Compare

Clear

Match

Match

Toggle
Output

T

1

or T(max.)

T

1

T

2

(OCU0 Pin/OCU2 Pin)

(OCU1 Pin/OCU3 Pin)

T

2

T

1

(OCU1/OCU3)

Trigger output 4 channel

PWM Output

2 channel