UPD784026 Renesas Electronics Corporation., UPD784026 Datasheet - Page 590

• Manufacturer Part Number: UPD784026
• Description: 16/8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

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Figure 20-29 Macro Service Data Transfer Processing Flow (Type C) (2/2)
(Vectored Interrupt Request Generation)
Subtract modulo register
contents from data macro
service pointer (MPD), and
return pointer to start address
Clear ( 0 ) interrupt
processing mode bit (ISM)
Load modulo register
contents into ring counter
Decrement ring counter
CHAPTER 20 INTERRUPT FUNCTIONS
Ring counter = 0?
MSC
Increment MPD?
Ring control?
MSC = 0?
VCIE = 1?
End
1
MSC – 1
No
Yes
Yes
Yes
Yes
Yes
No
No
No
No
Add modulo register contents
to data macro service pointer
(MPD), and return pointer to
start address
Clear ( 0 ) interrupt
request flag (IF)
End