Datasheet

V850ES/JG3 CHAPTER 7 16-BIT TIMER/EVENT COUNTER P (TMP)
R01UH0015EJ0300 Rev.3.00 Page 201 of 870
Sep 30, 2010
(a) Function as compare register
The TPnCCR1 register can be rewritten even when the TPnCTL0.TPnCE bit = 1.
The set value of the TPnCCR1 register is transferred to the CCR1 buffer register. When the value of the 16-bit
counter matches the value of the CCR1 buffer register, a compare match interrupt request signal (INTTPnCC1)
is generated. If TOPn1 pin output is enabled at this time, the output of the TOPn1 pin is inverted.
(b) Function as capture register
When the TPnCCR1 register is used as a capture register in the free-running timer mode, the count value of
the 16-bit counter is stored in the TPnCCR1 register if the valid edge of the capture trigger input pin (TIPn1 pin)
is detected. In the pulse-width measurement mode, the count value of the 16-bit counter is stored in the
TPnCCR1 register and the 16-bit counter is cleared (0000H) if the valid edge of the capture trigger input pin
(TIPn1) is detected.
Even if the capture operation and reading the TPnCCR1 register conflict, the correct value of the TPnCCR1
register can be read.
The following table shows the functions of the capture/compare register in each mode, and how to write data to the
compare register.
Table 7-3. Function of Capture/Compare Register in Each Mode and How to Write Compare Register
Operation Mode Capture/Compare Register How to Write Compare Register
Interval timer Compare register Anytime write
External event counter Compare register Anytime write
External trigger pulse output Compare register Batch write
One-shot pulse output Compare register Anytime write
PWM output Compare register Batch write
Free-running timer Capture/compare register Anytime write
Pulse width measurement Capture register
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