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SH7137 Datasheet(PDF) 3 Page - Renesas Technology Corp

Part # SH7137
Description  Output of Complementary Pairs of PWM Signals in Three Phases
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

SH7137 Datasheet(HTML) 3 Page - Renesas Technology Corp

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SH7280 Group
MTU2: Output of Complementary Pairs of PWM Signals in Three Phases
(Complementary PWM Mode)
REJ06B0887-0100/Rev.1.00
June 2009
Page 3 of 24
2.
Description of the Sample Application
In this sample program, MTU2 is used in complementary PWM mode.
2.1
Operational Overview of Module Used
2.1.1
Multi-Function Timer Pulse Unit 2 (MTU2)
MTU2 is a multi-functional timer unit that has six 16-bit timer channels. Settings for compare-match function, input-
capture function, etc. can be made for each channel. Settings for complementary PWM mode and reset-synchronized
PWM mode are made for channels 3 and 4, enabling the control of six PWM output lines.
For details on MTU2, see the section on MTU2 in the SH7137 Group Hardware Manual (REJ09B0402).
Table 2 gives an overview of MTU2 and figure 2 is a block diagram of MTU2.
Table 2
Overview of MTU2
Item
Description
Number of channels
16-bit timer
× 6 channels (channels 0 to 5)
Counter clock
The clock signal for counter input can be selected from among 8 different input
clock signals (except for channel 5, with only 4 different clock signals available).
Operation of channels 0
to 5
• Waveform output on compare match
• Input capture function
• Counter clearing
• Simultaneous writing to multiple timer counters (TCNT)
• Simultaneous clearing by compare match and input capture
• Input to and output from registers are synchronized with counter operation.
• PWM output in up to 12 phases in combination with synchronous operation
Triggers for A/D converter
• A/D converter start trigger can be generated.
• In complementary PWM mode, interrupts at the crest and trough of the
counter value and A/D converter start triggers can be skipped.
Buffered operation
• Settings for buffered operation of registers can be made to channels 0, 3,
and 4.
Operating modes
• Settings for PWM mode can be made on channels 0 to 4.
• Settings for phase counting mode can be set for each of channels 1 and 2
individually.
• Waveform output in a total of six phases, including the positive and inverse
signals for three phases, is possible in reset-synchronized PWM mode or
complementary PWM mode.
Interrupt requests
• 28 different interrupt sources
(interrupt generation by compare match, input capture, etc.)
Others
• Cascade-connection operation
• High-speed access by internal 16-bit bus
• Automatic transfer of register data is enabled.
• Module standby mode can be set.
• Dead time compensation counter is available in channel 5.


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