UPD784938 Datasheet, PDF (395/733 Pages) NEC – 16-Bit Single-Chip Microcontrollers

CHAPTER 15 PWM OUTPUT UNIT
The µPD784938 incorporates two 12-bit resolution PWM (pulse width modulation) output circuit channels. The active
level of the PWM output pulses can be selected as high or low. The PWM output ports consist of dedicated pins.
15.1 PWM Output Unit Configuration
The PWM output unit configuration is shown in Figure 15-1.
Figure 15-1. PWM Output Unit Configuration
8
PWMn
15
PWPR
Internal bus
16
87
43
0
8
Reload
4
Reload
Reload control
8
PWMC
fPWMC
fCLK Prescaler
8-bit down counter
1/256
Remark n = 0, 1
PWM pulse
generator
4-bit counter
Output control
circuit
PWMn
Preliminary User’s Manual U13987EJ1V0UM00
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