upd70f3422gj-gae-qs-ax Renesas Electronics Corporation., upd70f3422gj-gae-qs-ax Datasheet - Page 373
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upd70f3422gj-gae-qs-ax
Manufacturer Part Number
upd70f3422gj-gae-qs-ax
Description
32-bit Single-chip Microcontroller
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD70F3422GJ-GAE-QS-AX.pdf
(930 pages)
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16-bit Timer/Event Counter P (TMP)
INTTPnCC0 signal
TPnCCR0 register
16-bit counter
TPnCE bit
FFFFH
0000H
(c) Notes on rewriting the TPnCCR0 register
Preliminary User’s Manual U17566EE1V2UM00
To change the value of the TPnCCR0 register to a smaller value, stop
counting once and then change the set value.
If the value of the TPnCCR0 register is rewritten to a smaller value during
counting, the 16-bit counter may overflow.
If the value of the TPnCCR0 register is changed from D
count value is greater than D
transferred to the CCR0 buffer register as soon as the TPnCCR0 register
has been rewritten. Consequently, the value that is compared with the
16-bit counter is D
Because the count value has already exceeded D
counter counts up to FFFFH, overflows, and then counts up again from
0000H. When the count value matches D
generated.
Therefore, the INTTPnCC0 signal may not be generated at the valid edge
count of “(D
generated at the valid edge count of “(10000H + D
External event
count signal
interval (1)
(D
1
+ 1)
1
+ 1) times” or “(D
D
1
D
2
.
1
External event count signal
interval (NG)
(10000H + D
D
2
2
D
but less than D
2
1
+ 1) times” originally expected, but may be
2
+ 1)
2
, the INTTPnCC0 signal is
D
2
D
2
1
, the count value is
External event
count signal
interval (2)
(D
D
2
2
2
+ 1)
, however, the 16-bit
2
+ 1) times”.
1
to D
2
while the
Chapter 11
373
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