CHAPTER 9 TIMER/COUNTER FUNCTION
367
User’s Manual U15195EJ5V0UD
(b) When the trigger signal of TM20 = 0 is output immediately after the SWFEn bit is changed from 1
to 0
When the trigger signal of TM20 = 0 is output immediately after the SWFEn bit is changed from 1 to 0,
the initial active period is from when the SWFEn bit is changed from 1 to 0 until the trigger signal of TM20
is output. Therefore, a shorter pulse than the active period of the normal TO2n output is output.
When the SWFEn bit is changed from 0 to 1, the TO2n output is forcibly fixed to inactive. If this operation
is generated while active level is output, the active level output period is shorter (refer to
Figure 9-87
).
Figure 9-87. When Normal Output Operation Starts/Ends
(When OTMEn1, OTMEn0 Bits = 01 in OCTLE0 Register, ODLEn2 to ODLEn0 Bits = 000 in ODELD0 Register)
f
CLK
Match signal with
CVSE0 register
TO2n (
internal)
TO2n
output
(ALVEn
bit = 0)
TO2n
output
(ALVEn
bit = 1)
TM20
CVSE00
register
CVSEn0
r egister
TM20 = 0
02
Inactive status
(fixed)
Inactive status
Active status
Active status
Inactive status
Inactive status
(fixed)
04
03
06
0008H
0005H
05
07
00
01
02
04
06
03
05
07
SWFEn
bit
00
01
02
04
03
05
06
07
00
Active status
Remark
n = 1 to 4