upd70f3017ay Renesas Electronics Corporation., upd70f3017ay Datasheet - Page 137

• Manufacturer Part Number: upd70f3017ay
• Description: V850/sa1tm 32-/16-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

5.9 Interrupt Control Register Bit Manipulation Instructions During DMA Transfer
the DI instruction before manipulation and EI instruction after manipulation. Alternatively, clear (0) the xxIF bit at the
start of the interrupt servicing routine.
intrq signal
intrq signal
To manipulate the bits of the interrupt control register (xxICn) in the EI state when using the DMA function, execute
When not using the DMA function, these manipulations are not necessary.
Remark
ei signal
ei signal
EI
EI
xx: Peripheral unit identification name (see Table 5-2)
N: Peripheral unit number (see Table 5-2)
NOP
NOP
IF
IF
(b) When DI instruction is executed at seventh clock after EI instruction execution
(a) When DI instruction is executed at eighth clock after EI instruction execution
Figure 5-17. Pipeline Flow and Interrupt Request Signal Generation Timing
(interrupt request is not acknowledged)
(interrupt request is acknowledged)
NOP
NOP
ID
ID
IF
IF
CHAPTER 5 INTERRUPT/EXCEPTION PROCESSING FUNCTION
NOP
NOP
EX
EX
ID
ID
IF
IF
MEM
MEM
NOP
NOP
EX
EX
ID
ID
IF
IF
MEM
User’s Manual U12768EJ4V1UD
MEM
NOP
NOP
WB
WB
EX
EX
ID
ID
IF
IF
MEM
MEM
NOP
NOP
WB
WB
EX
EX
ID
ID
IF
IF
MEM
MEM
NOP
WB
WB
EX
EX
ID
DI
ID
IF
IF
MEM
MEM
WB
WB
EX
EX
ID
DI
ID
IF
IF
MEM
MEM
WB
WB
EX
EX
ID
ID
IF
intrq signal is not generated
intrq signal is generated
MEM
MEM
WB
WB
EX
EX
ID
MEM
MEM
WB
WB
EX
MEM
WB
WB
WB
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