PD17012_15 Datasheet, PDF (109/320 Pages) Renesas Technology Corp – 4-BIT SINGLE-CHIP MICROCONTROLLERS WITH DIGITAL TUNING SYSTEM HARDWARE

µPD17012, 17P012
Figure 11-9. Timing Chart of Acknowledging Interrupt (1/3)
(1) When one interrupt (e.g., rising of INT pin) is used
(a) If interrupt is not masked by interrupt enable flag (IP×××)
<1> If the MOVT instruction or a normal instruction that does not satisfies the skip condition is executed
when an interrupt is acknowledged
Instruction
INTE
EI
MOV
POKE
WR, #0001B INTPM1, WR
Normal Interrupt
instruction cycle
INT pin
IRQ flag
IP flag
Instruction cycle:
4.44 µs
Interrupt acknowledged
Interrupt enable period
Interrupt servicing routine
<2> If the MOVT instruction or an instruction that satisfies the skip condition is executed when an
interrupt is acknowledged
Instruction
INTE
EI
MOV
POKE
WR, #0001B INTPM, WR
MOVT DBF,@AR
Skip instruction
Interrupt
cycle
INT pin
IRQ flag
IP flag
Interrupt acknowledged
Interrupt enable period
Interrupt servicing routine
Data Sheet U10101EJ4V0DS
107