UPD784938 Datasheet, PDF (396/733 Pages) NEC – 16-Bit Single-Chip Microcontrollers

CHAPTER 15 PWM OUTPUT UNIT
(1) 8-bit down counter
Generates the basic PWM signal timing.
(2) PWM pulse generator (including 4-bit counter)
Controls addition of extra pulses and generates the PWM pulses to be output.
(3) Reload control
Controls 8-bit down counter and 4-bit count modulo value reloading.
(4) Output control circuit
Controls the active level of the PWM signal.
(5) Prescaler
Scales fCLK, and generates the reference clock.
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Preliminary User’s Manual U13987EJ1V0UM00