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10-92

MULTIJUNCTION TIMERS

10.3 TOP (Output-Related 16-Bit Timer)

32180 Group User’s Manual (Rev.1.0)

In the example below, the counter and the reload register are initially set to H’A000 and H’E000, respectively.

When the timer is enabled, the counter starts counting down and when it underflows after reaching the

minimum count, the counter is loaded with the content of the reload register and continues counting down.

H'FFFF

H'0000

H'E000

H'A000

H'E000

H'(E000-1) H'(E000-1)

H'FFFF H'FFFF

Data inverted

by underflow

Data inverted

by underflow

Data inverted by

enable

Count clock

Correction register

F/F output

TOP interrupt request

due to underflow

Enable bit

Note: • This diagram does not show detailed timing information.

Reload register

Counter

Underflow

(first time)

Underflow

(second time)

Enabled

(by writing to the enable bit

or by external input)

Count down from the

counter's set value

Count down from the

reload register's

set value

Count down from the

reload register's

set value

(Unused)

Figure 10.3.18 Typical Operation in TOP Continuous Output Mode

Brand	Renesas
Model	M32R/ECU Series
Category	Computer Hardware
Language	English

Renesas M32R/ECU Series User Manual

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Renesas M32R/ECU Series Specifications

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