UPD784026 Renesas Electronics Corporation., UPD784026 Datasheet - Page 584
UPD784026
Manufacturer Part Number
UPD784026
Description
16/8-bit Single-chip Microcontrollers
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD784026.pdf
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544
(Vectored Interrupt Request Generation)
Read channel pointer contents (m)
Read data from SFR, and write to
memory addressed by MP
Figure 20-25 Macro Service Data Transfer Processing Flow (Type B)
Read contents of macro service
mode register
Select transfer source SFR with
SFR pointer
Clear ( 0 ) interrupt processing
mode bit (ISM)
Determine transfer direction
Determine channel type
Macro service request
acknowledgment
MSC
Increment MP*
VCIE = 1?
MSC = 0?
End
MSC–1
Memory
TYPE B
No
Yes
CHAPTER 20 INTERRUPT FUNCTIONS
SFR
SFR
Other
Yes
No
*
Memory
1-byte transfer: +1
2-byte transfer: +2
To Other Macro Service Processing
Clear ( 0 ) interrupt request
flag (IF)
Read data from memory, and write to
SFR specified by SFR pointer
Select transfer source memory with
macro service pointer (MS)
End
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