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528
Chapter 11
16-bit Timer/Event Counter T
User’s Manual U16580EE3V1UD00
(b) Bit TTnECC rewrite timing and its influence on counter
<1> When setting value of bit TTnECC is rewritten 0
→
1
→
0 when TTnCE = 1
Even if bit TTnECC rewrite is performed while TTnCE = 1, this has no influence on the counter
operation.
Judgment as whether to hold or reset the counter value is performed while TTnCE = 0.
Moreover, judgment as to whether to load the setting value of the TTnTCW register to the counter
is performed at the timing when the value of bit TTnCE changes from 0 to 1.
Figure 11-37:
Counter Hold through Bit TTnECC Timings (2/5)
(c) when setting value of bit TTnECC is rewritten 0
→
1
→
0 when TTnCE = 1
<2> When setting value of bit TTnECC is rewritten 1
→
0
→
1 while TTnCE = 0
The counter is reset when the setting value of bit TTnECC is changed from 1 to 0 while TTnCE = 0.
Then, when TTnECC = 1 is set again and the value of bit TTnCE is changed from 0 to 1, counting
restarts from the counter's initial value FFFFH, without the setting value of the TTnTCW being
loaded to the counter.
(d) when setting value of bit TTnECC is rewritten 1
→
0
→
1 while TTnCE = 0
Remark:
n = 0, 1
TTnECC
TTnCE
L
TCW
H
H
L
FFFFH
L
L
TCW
No influence on
operation
Internal
count
signal
Counter
Start ENC-Mode
TCW Load
Start new ENC-Mode
TCW Load
Count Not Hold
Counter
reset
L
H
H
L
FFFFH
H
L
N
TTnECC
TTnCE
Counter
hold
Counter
reset
Change ENC-Mode
TCW not load
Internal
count
signal
Counter
Содержание MuPD70F3187
Страница 6: ...6 Preface User s Manual U16580EE3V1UD00 ...
Страница 16: ...16 User s Manual U16580EE3V1UD00 ...
Страница 28: ...28 User s Manual U16580EE3V1UD00 ...
Страница 32: ...32 User s Manual U16580EE3V1UD00 ...
Страница 84: ...84 Chapter 2 Pin Functions User s Manual U16580EE3V1UD00 MEMO ...
Страница 144: ...144 Chapter 3 CPU Functions User s Manual U16580EE3V1UD00 MEMO ...
Страница 192: ...192 Chapter 5 Memory Access Control Function μPD70F3187 only User s Manual U16580EE3V1UD00 MEMO ...
Страница 312: ...312 Chapter 9 16 Bit Timer Event Counter P User s Manual U16580EE3V1UD00 MEMO ...
Страница 534: ...534 Chapter 11 16 bit Timer Event Counter T User s Manual U16580EE3V1UD00 ...
Страница 969: ...969 Chapter 20 Port Functions User s Manual U16580EE3V1UD00 MEMO ...
Страница 970: ...970 Chapter 20 Port Functions User s Manual U16580EE3V1UD00 ...
Страница 976: ...976 Chapter 22 Internal RAM Parity Check Function User s Manual U16580EE3V1UD00 MEMO ...
Страница 984: ...984 Chapter 23 On Chip Debug Function OCD User s Manual U16580EE3V1UD00 MEMO ...
Страница 1006: ...1006 Chapter 24 Flash Memory User s Manual U16580EE3V1UD00 MEMO ...
Страница 1036: ...1036 Chapter 27 Recommended Soldering Conditions User s Manual U16580EE3V1UD00 MEMO ...
Страница 1046: ...1046 Appendix A Index User s Manual U16580EE3V1UD00 MEMO ...
Страница 1052: ...1052 User s Manual U16580EE3V1UD00 ...
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