UPD784026 Renesas Electronics Corporation., UPD784026 Datasheet - Page 602
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UPD784026
Manufacturer Part Number
UPD784026
Description
16/8-bit Single-chip Microcontrollers
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD784026.pdf
(759 pages)
- Current page: 602 of 759
- Download datasheet (3Mb)
20.8.9 Counter Mode
(1) Operation
562
MSC is decremented the number of times set in advance to the macro service counter (MSC).
Because the number of times an interrupt occurs can be counted, this function can be used as an event counter where
the interrupt generation cycle is long.
Figure 20-39 Macro Service Data Transfer Processing Flow (Counter Mode)
(Vectored interrupt request is generated)
Reads contents of macro service
mode register
Clears interrupt processing type
bit (ISM) to 0
Identifies channel type
Macro service request
acknowledged
MSC
VCIE=1?
MSC=0?
CHAPTER 20 INTERRUPT FUNCTIONS
End
Yes
MSC-1
No
Counter mode
Yes
Others
MSC is 16 bits wide
No
Clears interrupt request flag
(IF) to 0
To other macro service processing
End
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