UPD784938 Datasheet, PDF (341/733 Pages) NEC – 16-Bit Single-Chip Microcontrollers

CHAPTER 11 TIMER/EVENT COUNTER 2
Figure 11-29. Example of PPG Output Using TM2
CR21
CR21
TM2
count value
0H
Count start
INTC20
INTC21
TO2
(PPG output)
CR20
CR20
Pulse width
TO3
(timer output)
Pulse cycle
Remark ALV2 = 0, ALV3 = 0
Table 11-9. TO2 PPG Output (fXX = 12.58 MHz)
Count Clock
fXX/4
fXX/8
fXX/16
fXX/32
fXX/64
fXX/128
fXX/256
fXX/512
fXX/1,024
Minimum Pulse Width [µs]
0.32
0.64
1.27
2.54
5.09
10.17
20.35
40.70
81.40
PPG Cycle [s]
0.64 µs to 20.84 ms
1.27 µs to 41.68 ms
2.54 µs to 83.35 ms
5.09 µs to 166.71 ms
10.17 µs to 333.41 ms
20.35 µs to 666.82 ms
40.70 µs to 1.33 s
81.40 µs to 2.67 s
162.80 µs to 5.38 s
CR21
CR20
PPG Frequency [Hz]
1,572 kHz to 48.0 Hz
786 kHz to 24.0 Hz
393 kHz to 12.0 Hz
197 kHz to 6.0 Hz
98.3 kHz to 3.0 Hz
49.1 kHz to 1.5 Hz
24.6 kHz to 0.7 Hz
12.3 kHz to 0.4 Hz
6.1 kHz to 0.2 Hz
Preliminary User’s Manual U13987EJ1V0UM00
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