m37905 Renesas Electronics Corporation., m37905 Datasheet - Page 253

• Manufacturer Part Number: m37905
• Description: Mitsubishi 16-bit Single-chip Microcomputer 7700 Family / 7900 Series
• Manufacturer: Renesas Electronics Corporation.

there are three position-data input pins for the U, V, and W phases.
by the retain-trigger polarity select bit (bit 3 at address AA
positive phase or rising edge of one.
THREE-PHASE WAVEFORM MODE
10.6 Position-data-retain function
10.6 Position-data-retain function
This function is used to retain the position data synchronously with the three-phase waveform output; and
A trigger to retain the position data (hereafter, this trigger is referred to as “retain trigger.”) can be selected
Fig. 10.6.1 Usage example of position-data-retain function (U phase)
10-36
10.6.1 Operation of position-data-retain function
Figure 10.6.1 shows a usage example of the position-data-retain function (U phase) when a retain trigger
is the falling edge of the positive signal.
Carrier wave
U-phase waveform output
U-phase waveform output
Pin IDU
U-phase position data retain bit
(bit 2 at address AA
At the falling edge of the U-phase waveform output, the state at pin IDU is transferred to the U-phase
position data retain bit (bit 2 at address AA
Until the next falling edge of the U-phase waveform output, the above value is retained.
16
)
Transferred
7905 Group User’s Manual Rev.1.0
Note: The retain trigger is the falling edge of the positive signal.
16
).
Transferred
16
); this bits selects the falling edge of each
Transferred
Transferred