509
Chapter 11
16-bit Timer/Event Counter T
User’s Manual U16580EE3V1UD00
(3)
Compare/capture function (TTnCCS1 = 0, TTnCCS0 = 1)
When TTnCTL0 register bit TTnCE is set to 1, the counter counts from 0000H to FFFFH, an
overflow interrupt (INTTTnOV) is output when the value of the counter changes from FFFFH to
0000H, and the counter is cleared. The count operation is performed in the free-running mode
until TTnCE = 0 is set. The TTnCCR1 register is used as a compare register, and as the interval
function upon a match between the counter and TTnCCR1 register, a compare match interrupt
(INTTTnCC1) is output. Since the TTnCCR0 register is set to the capture function, the TOTn0 pin
cannot be controlled even when TTnIOC0 register bit TTnOE0 is set to 1.
Cautions: 1. In free-running mode the external event clock input (TEVTTn) is prohibited
(TTnCTL1.TTnEEE = 0).
2. When an internal count clock
≤
f
XX
/16 (TTnCTL0.TTnCKS2-0) is selected in free-
running mode, and TTnCCR0 register is used as capture register, the a value of
FFFFH will be captured if a valid signal edge is input before the first count up.
Figure 11-32:
Basic Operation Timing in Free-Running Mode (Compare/Capture Function)
(a) When value of TTnCCR1 is rewritten, TOTn0, TOTn1 are output
(TTnOE0, 1 = 1, TTnOL0, 1 = 0)
Remarks: 1.
D
00
, D
01
: Setting values of TTnCCR1 register (0000H to FFFFH)
D
10
, D
11
,
D
12
, D
13
, D
14
, D
15
: Values captured to TTnCCR0 register (0000H to FFFFH)
2.
TITn0: Setting to rising edge detection (TTnIOC1 register bits TtnIS1, TtnIS0 = 11)
3.
n = 0, 1
Counter
FFFFH
TTnCCR1
TITn0
TTnCE
D
00
D
02
D
03
D
10
D
11
D
10
TTnCCR0
0000H
D
12
D
00
D
01
D
11
D
12
D
01
D
02
D
03
D
11
TTnCCR1
buffer
INTTTnCC1
D
10
D
11
D
12
0000H
INTTTnCC0
Match interrupt
capture interrupt
INTTTnOV
overflow interrupt
TOTn0
TOTn1
Low
Содержание MuPD70F3187
Страница 6: ...6 Preface User s Manual U16580EE3V1UD00 ...
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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 ...
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