485
Chapter 11
16-bit Timer/Event Counter T
User’s Manual U16580EE3V1UD00
(2)
Reload method (Batch rewrite)
When TTnCCR0, TTnCCR1 register write is performed during timer operation, the written value is
used as the comparison value for the counter via the TTnCCR0 and TTnCCR1 buffer registers.
Under the reload method, rewrite the TTnCCR0 register before the TTnCCR0 register value is
matched, and next, write to the TTnCCR1 register.
Then, when the TTnCCR0 register is matched or the counter is cleared to 0000H through external
input, the values of the TTnCCR0 register and TTnCCR1 register are reloaded.
By writing to the TTnCCR1 register, the value becomes valid at the next reload timing.
Therefore, even if wishing to rewrite only the value of the TTnCCR0, rewrite the same value to the
TTnCCR1 register to make the next reload valid.
Figure 11-18:
Basic Operation Flow for Reload (Batch Rewrite)
Caution:
Rewrite to the TTnCCR1 register includes enabling reload. Therefore, rewrite the
TTnCCR1 register after rewriting the TTnCCR0 register.
Remarks: 1.
The PWM mode is used as an example.
2.
n = 0, 1
START
Initial settings
Reload enable
INTTTnCC0
occurrence
TTnCCR1 rewrite
TTnCCR0 rewrite
•
Match between TTnCCR0 value and
counter
•
Counter clear & start
•
Reload of value of TTnCCR0 and
TTnCCR1 to TTnCCR0 and TTnCCR1
buffers
Timer operation enable (TT0CE = 1)
Values of TTnCCR0 and TTnCCR1 are
transferred to buffers TTnCCR0 and
TTnCCR1.
→
Summary of Contents for MuPD70F3187
Page 6: ...6 Preface User s Manual U16580EE3V1UD00 ...
Page 16: ...16 User s Manual U16580EE3V1UD00 ...
Page 28: ...28 User s Manual U16580EE3V1UD00 ...
Page 32: ...32 User s Manual U16580EE3V1UD00 ...
Page 84: ...84 Chapter 2 Pin Functions User s Manual U16580EE3V1UD00 MEMO ...
Page 144: ...144 Chapter 3 CPU Functions User s Manual U16580EE3V1UD00 MEMO ...
Page 312: ...312 Chapter 9 16 Bit Timer Event Counter P User s Manual U16580EE3V1UD00 MEMO ...
Page 534: ...534 Chapter 11 16 bit Timer Event Counter T User s Manual U16580EE3V1UD00 ...
Page 969: ...969 Chapter 20 Port Functions User s Manual U16580EE3V1UD00 MEMO ...
Page 970: ...970 Chapter 20 Port Functions User s Manual U16580EE3V1UD00 ...
Page 976: ...976 Chapter 22 Internal RAM Parity Check Function User s Manual U16580EE3V1UD00 MEMO ...
Page 984: ...984 Chapter 23 On Chip Debug Function OCD User s Manual U16580EE3V1UD00 MEMO ...
Page 1006: ...1006 Chapter 24 Flash Memory User s Manual U16580EE3V1UD00 MEMO ...
Page 1036: ...1036 Chapter 27 Recommended Soldering Conditions User s Manual U16580EE3V1UD00 MEMO ...
Page 1046: ...1046 Appendix A Index User s Manual U16580EE3V1UD00 MEMO ...
Page 1052: ...1052 User s Manual U16580EE3V1UD00 ...
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