SH7211_09 Datasheet, PDF (4/26 Pages) Renesas Technology Corp – MTU2 Three-Phase Complementary PWM Output Function

SH7211 Group
MTU2 Three-Phase Complementary
PWM Output Function (Complementary PWM Mode)
2. Description of the Sample Application
In this sample application, the complementary PWM mode function of multi-function timer pulse unit 2 (MTU2) is
used.
2.1 Operational Overview of Module Used
2.1.1 Multi-Function Timer Pulse Unit 2 (MTU2)
Multi-function timer pulse unit 2 (MTU2) is a multi-function timer unit comprising a 6-channel 16-bit timer. Settings
such as compare match or input capture can be made individually for each channel. Channels 3 and 4 can be used for 6-
line PWM output control by specifying complementary PWM mode or reset synchronous mode.
For details of MTU2, see the Multi-Function Timer Pulse Unit 2 (MTU2) section in the SH7211 Group Hardware
Manual (RJJ09B0338).
Table 1 is an overview of multi-function timer pulse unit 2 (MTU2). Figure 2 is a block diagram of MTU2.
Table 1 Overview of Multi-Function Timer Pulse Unit 2 (MTU2)
Item
Number of channels
Counter clock
Operation of channels 0 to 5
Triggers for A/D converter
Buffered operation
Operating modes
Interrupt requests
Others
Description
16-bit timer × 6 channels (channels 0 to 5)
Each channel selectable among eight counter input clocks (four counter
input clocks for channel 5)
• Waveform output at compare match, input capture function, counter
clear operation, simultaneous write to multiple timer counters (TCNT),
simultaneous clear at compare match or input capture
• Synchronous register I/O using counter-synchronous operation, max.
12-phase PWM output through combination with synchronous operation
• Ability to generate conversion start trigger for A/D converter
• Ability to generate interrupt at counter peak/trough and to skip
conversion start triggers for A/D converter in complementary PWM
mode
• Ability to specify register buffer operation for channels 0, 3, and 4
• Ability to specify PWM mode for channels 0 to 4
• Ability to specify phase counting mode independently for channels 1
and 2
• Ability to specify 3-phase positive and negative PWM waveform output
(total 6 lines) in complementary PWM mode or reset synchronous PWM
mode, using linked operation of channels 3 and 4
• 28 interrupt sources (compare match, input capture, etc.)
• Cascade connection operation
• High-speed access via internal 16-bit bus
• Support for automatic transfer of register data
• Ability to specify module standby mode
• Support for dead time compensation counter function using channel 5
REJ06B0891-0100/Rev.1.00
July 2009
Page 4 of 26