upd70f3422gj-gae-qs-ax Renesas Electronics Corporation., upd70f3422gj-gae-qs-ax Datasheet - Page 382

• Manufacturer Part Number: upd70f3422gj-gae-qs-ax
• Description: 32-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

Chapter 11
382
External trigger input
CCR0 buffer register
CCR1 buffer register
INTTPnCC0 signal
INTTPnCC1 signal
TPnCCR0 register
TPnCCR1 register
TOPn0 pin output
TOPn1 pin output
(software trigger)
(TIPn0 pin input)
16-bit counter
TPnCE bit
FFFFH
0000H
Preliminary User’s Manual U17566EE1V2UM00
In order to transfer data from the TPnCCRm register to the CCRm buffer
register, the TPnCCR1 register must be written.
To change both the cycle and active level width of the PWM waveform at
this time, first set the cycle to the TPnCCR0 register and then set the active
level width to the TPnCCR1 register.
To change only the cycle of the PWM waveform, first set the cycle to the
TPnCCR0 register, and then write the same value to the TPnCCR1
register.
To change only the active level width (duty factor) of the PWM waveform,
only the TPnCCR1 register has to be set.
After data is written to the TPnCCR1 register, the value written to the
TPnCCRm register is transferred to the CCRm buffer register in
synchronization with clearing of the 16-bit counter, and is used as the
value compared with the 16-bit counter.
To write the TPnCCR0 or TPnCCR1 register again after writing the
TPnCCR1 register once, do so after the INTTPnCC0 signal is generated.
Otherwise, the value of the CCRm buffer register may become undefined
because the timing of transferring data from the TPnCCRm register to the
CCRm buffer register conflicts with writing the TPnCCRm register.
D
10
D
D
00
00
D
10
D
D
D
10
10
D
00
00
D
10
D
00
D
D
16-bit Timer/Event Counter P (TMP)
11
01
D
01
D
D
D
D
11
11
01
11
D
01