DS07-16303-3E Datasheet, PDF (43/97 Pages) Fujitsu Component Limited. – 32-bit RISC Microcontroller CMOS FR30 Series

MB91121
5. PWM Timer
The PWM timer can output high accurate PWM waves efficiently.
MB91121 has inner 4-channel PWM timers, and has the following features.
• Each channel consists of a 16-bit down counter, a 16-bit data resister with a buffer for cycle setting, a 16-bit
compare resister with a buffer for duty setting, and a pin controller.
• The count clock of a 16-bit down counter can be selected from the following four inner clocks.
Inner clock φ, φ/4, φ/16, φ/64
• The counter value can be initialized “FFFFH” by the resetting or the counter borrow.
• PWM output (each channel)
• Resister description
• Block diagram (general construction)
16-bit reload timer
ch.0
16-bit reload timer
ch.1
General control
4
register 2
4
External TRG0 to TRG3
General control
register 1
(cause selection)
TRG input
PWM timer ch.0
TRG input
PWM timer ch.1
TRG input
PWM timer ch.2
TRG input
PWM timer ch.3
PWM0
PWM1
PWM2
PWM3
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