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M16C/29 データシート(PDF) 160 Page - Renesas Technology Corp

部品番号 M16C/29
部品情報  RENESAS MCU M16C FAMILY / M16C/Tiny SERIES
PDF  499 Pages
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メーカー  RENESAS [Renesas Technology Corp]
ホームページ  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

M16C/29 データシート(HTML) 160 Page - Renesas Technology Corp

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12. Timer (Three-phase Motor Control Timer Function)
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12.3.1 Position-Data-Retain Function
This function is used to retain the position data synchronously with the three-phase waveform
output.There are three position-data input pins for U, V, and W phases.
A trigger to retain the position data (hereafter, this trigger is referred to as "retain trigger") can be selected
by the PDRT bit in the PDRF register. This bit selects the retain trigger to be the falling edge of each
positive phase, or the rising edge of each positive phase.
12.3.1.1 Operation of the Position-data-retain Function
Figure 12.35
shows a usage example of the position-data-retain function (U phase) when the retain
trigger is selected as the falling edge of the positive signal.
(1) At the falling edge of the U-phase waveform ouput, the state at pin IDU is transferred to the PDRU
bit in the PDRF register.
(2) Until the next falling edge of the Uphase waveform output,the above value is retained.
Transferred
Carrier wave
U-phase waveform output
U-phase waveform output
1
2
Transferred
Transferred
Transferred
Pin IDU
Note:
Note: The retain trigger is the falling edge of the positive signal.
PDRU bit
Figure 12.35 Usage Example of Position-data-retain Function (U phase )



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