UPD784938 Datasheet, PDF (246/733 Pages) NEC – 16-Bit Single-Chip Microcontrollers

CHAPTER 9 TIMER/EVENT COUNTER 0
Table 9-8. TO0 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
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 5.33 s
PPG Frequency
1572 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
Figure 9-24. Example of PPG Output when CR00 = CR01
n
n
n
n-1
n-1
Count cycle T
TM0
count value
2
2
1
1
0
0
0
INTC00
INTC01
TO0
Pulse width = nT
Pulse cycle = (n+1) T
Remark ALV0 = 0
T = x/fXX (x = 4, 8, 16, 32, 64, 128, 256, 512, 1,024)
246
Preliminary User’s Manual U13987EJ1V0UM00