Fujitsu FR81S User Manual
CHAPTER 48: WAVEFORM GENERATOR
2. Features
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER : WAVEFORM GENERATOR
FUJITSU SEMICONDUCTOR CONFIDENTIAL
4
2. Features
This section explains the features of the waveform generator.
Function of the Waveform Generator
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The waveform generator consists of three 16-bit dead timer registers, three timer state control registers,
16-bit dead timer reload interrupt register, 16-bit dead timer minus control register, one 16-bit waveform
control register, and PPG output control register.
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You will be able to generate real-time output, 16-bit PPG waveform output, non-overlap 3-phase
waveform output (for inverter control), and DC chopper waveform output using the waveform
generator.
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You will be able to generate non-overlap waveform output based on the dead time of the 16-bit dead
timer (dead time timer function).
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In the 2-channel mode, you will be able to generate non-overlap waveform output by operating the
real-time output (dead time timer function).
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When a real-time output compare match is detected, GATE signal will be generated. This signal starts or
stops the PPG timer operation (GATE function).
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When a real-time output compare match is detected, the 16-bit dead timer becomes active. You will be
able to start or stop the PPG timer easily by generating GATE signal that controls the PPG operation
(GATE function).
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You will be able to select DTTI input to the waveform generator using the DTTI selector.
Function of DTTI
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By using the DTTI pin, you can control the waveform generator output to forcibly stop it.
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By using the DTTI register, you can control the waveform generator output to forcibly stop it.
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You can forcibly disable the waveform generator output, and can handle it as a general-purpose port,
regardless the setting of the extended port function registers (EPFR).
MB91520 Series
MN705-00010-1v0-E
2049