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CHAPTER 15 8/16-BIT PPG TIMER
[bit4] PIE0:ppg Interrupt Enable (PPG interrupt enable)
This bit is used to prohibit/allow PPG interrupts.
PIE0
0
1
•
If PUF0 is changed to "1" while this bit is "1", an interrupt request occurs. If this bit is "0", no
interrupt generates.
•
This bit is initialized to "0" at reset.
•
Reading and writing are allowed.
[bit3] PUF0: ppg Underflow Flag (PPG counter underflow)
This bit indicates the result of a PPG counter underflow detection.
PUF0
0
1
In 8-bit PPG6 channel mode (PPG0/PPG1,PPG2/PPG3,PPG4/PPG5) and 8-bit prescaler + 8-
bit PPG mode, this bit is set to "1" if an underflow occurs because the counter value for channel
0/2/4 changes "00
PPG5), this bit is set to "1" due to underflow if the counter value of channel 1, 3, 5 or channel 0,
2, 4 changes "0000
Reading by read-modify-write type instructions always read "1".
•
This bit is initialized to "0" at reset.
•
Reading and writing are allowed.
[bit0] reserved bit
This bit is reserved. When setting PPGC0/PPGC2/PPGC4, always set this bit to "1".
324
Interrupts prohibited
Interrupts allowed
No PPG counter underflow detected
PPG counter underflow detected
" → "FF
". In 16-bit PPG3 channel mode (PPG0/PPG1, PPG2/PPG3, PPG4/
H
H
" → "FFFF
". Writing "0" clears this bit to "0". Writing "1" has no effect.
H
H
Operation state
Operation state
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