r5f71374an80fpv Renesas Electronics Corporation., r5f71374an80fpv Datasheet - Page 971

• Manufacturer Part Number: r5f71374an80fpv
• Description: 32-bit Risc Microcomputer Superh?? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

Figure 22.21 Timing of Contention between SCO Download Request and Interrupt Request
2. Generation of interrupt requests during downloading
Ensure that interrupts are not generated during downloading that is initiated by the SCO
bit.
CPU cycle
CPU operation for instruction
that sets SCO bit to 1
Interrupt acceptance
(a) When the interrupt is accepted at the (n + 1) cycle or before
(b) When the interrupt is accepted at the (n + 2) cycle or later
After the interrupt processing completes, the SCO bit is set to 1 and download is executed.
The interrupt will conflicts with the SCO download request. Ensure that no interrupt is generated.
Fetch
n
(a)
Decoding
n+1
Execution
n+2
(b)
Rev. 1.00 Sep. 21, 2007 Page 945 of 1124
Execution
n+3
Section 22 Flash Memory
Execution
REJ09B0402-0100
n+4