UPD78F0838 Renesas Electronics Corporation., UPD78F0838 Datasheet - Page 271

• Manufacturer Part Number: UPD78F0838
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

CHAPTER 6 16-BIT TIMER/EVENT COUNTER P (TMP)
(e) Generation timing of compare match interrupt request signal (INTTPnCC1)
The timing of generation of the INTTPnCC1 signal in the external trigger pulse output mode differs from
the timing of other INTTPnCC1 signals; the INTTPnCC1 signal is generated when the count value of the
16-bit counter matches the value of the TPnCCR1 register.
Count clock
16-bit counter
D
2
D
1
D
D
+ 1
D
+ 2
1
1
1
1
1
TPnCCR1 register
D
1
TIOPn1 pin output
INTTPnCC1 signal
Remark
n = 0 to 4
Usually, the INTTPnCC1 signal is generated in synchronization with the next count up, after the count
value of the 16-bit counter matches the value of the TPnCCR1 register.
In the external trigger pulse output mode, however, it is generated one clock earlier. This is because the
timing is changed to match the timing of changing the output signal of the TIOPn1 pin.
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Preliminary User’s Manual U19748EJ1V0UD