Datasheet

Table Of Contents
Section 15 Asynchronous Event Counter (AEC)
Rev. 2.00 Jul. 04, 2007 Page 332 of 692
REJ09B0309-0200
15.5 Operating States of Asynchronous Event Counter
The operating states of the asynchronous event counter are shown in table 15.3.
Table 15.3 Operating States of Asynchronous Event Counter
Operating
Mode
Reset
Active
Sleep
Watch
Sub-active Sub-sleep
Standby
Module
Standby
AEGSR Reset Functioning Functioning Retained*
1
Functioning Functioning Retained*
1
Retained
ECCR Reset Functioning Functioning Retained*
1
Functioning Functioning Retained*
1
Retained
ECCSR Reset Functioning Functioning Retained*
1
Functioning Functioning Retained*
1
Retained
ECH Reset Functioning Functioning Functioning*
1
*
2
Functioning*
2
Functioning*
2
Functioning*
1
*
2
Halted
ECL Reset Functioning Functioning Functioning*
1
*
2
Functioning
2
Functioning*
2
Functioning*
1
*
2
Halted
IRQAEC Reset Functioning Functioning Retained*
3
Functioning Functioning Retained*
3
Retained*
4
Event counter
PWM
Reset Functioning Functioning Retained Retained Retained Retained Retained
Notes: 1. When an asynchronous external event is input, the counter increments. In addition,
when an overflow occurs, an interrupt is requested.
2. Functions when asynchronous external events are selected; halted and retained
otherwise.
3. Clock control by IRQAEC operates, but interrupts do not.
4. As the clock is stopped in module standby mode, IRQAEC has no effect.