UPD784938 Datasheet, PDF (360/733 Pages) NEC – 16-Bit Single-Chip Microcontrollers

CHAPTER 11 TIMER/EVENT COUNTER 2
11.9.5 Operation as PPG output
In PPG output, pulses with the cycle and duty ratio determined by the value set in the compare register (CR2n: n = 0,
1) are output (see Figure 11-50).
The control register settings are shown in Figure 11-51, the setting procedure in Figure 11-52, and the procedure for
varying the duty in Figure 11-53.
Figure 11-50. Example of Timer/Event Counter 2 PPG Signal Output
CR21
CR21
CR21
TM2
count value
CR20
0H
Timer start
TO2
(when active-high)
CR20
CR20
360
Preliminary User’s Manual U13987EJ1V0UM00