tmp89fm42a TOSHIBA Semiconductor CORPORATION, tmp89fm42a Datasheet - Page 183
tmp89fm42a
Manufacturer Part Number
tmp89fm42a
Description
8 Bit Microcontroller
Manufacturer
TOSHIBA Semiconductor CORPORATION
Datasheet
1.TMP89FM42A.pdf
(431 pages)
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tmp89fm42aUG
Manufacturer:
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13.4
Timer Function
RB002
TA0CR<TA0S>
TA0MOD<TA0TED>
TCA0 pin input
Source clock
Counter
Write to TA0DRAL
Write to TA0DRAH
TA0DRAL
TA0DRAH
INTTCA0 interrupt request
TA0CR<TA0S>
TA0MOD<TA0TED>
TCA0 pin input
Source clock
Counter
Write to TA0DRAL
Write to TA0DRAH
TA0DRAL
TA0DRAH
INTTCA0 interrupt request
Write n
Write n
Write m
Write m
m
m
n
n
Reflected by writing to TA0DRAH
Reflected by writing to TA0DRAH
Figure 13-4 External Trigger Timer Timing Chart
Timer start
Timer start
Counting
start
Counting
start
When the trigger is started and stopped (TA0MOD<TA0METT>=”1”)
0
0
When the trigger is started (TA0MOD<TA0METT>=”0”)
1
1
2
2
Match detection
Match detection
3
3
Edge is invalid
during counting
Page 164
mn-1
mn-1
mn
mn
0
0
Counter
clear
Counter
clear
Counting
start
Counting
start
1
1
Counting
stop
2
2
Write s
Counter
clear
3
0
Match detection
Write r
s
Counting
start
r
Reflected by writing to TA0DRAH
rs-1
Edge is invalid
during counting
Write s
rs
1
0
Counter
clear
Match detection
Write r
s
r
Reflected by writing
to TA0DRAH
1
TMP89FM42A
rs-1
2
Timer stop
Timer stop
0
rs
0
Counter
clear
1
0
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