參數(shù)資料
型號: M34556G8HFP
元件分類: 微控制器/微處理器
英文描述: 4-BIT, OTPROM, 6 MHz, MICROCONTROLLER, PDSO42
封裝: 0.450 INCH, 0.80 MM PITCH, PLASTIC, SSOP-42
文件頁數(shù): 63/145頁
文件大?。?/td> 1066K
代理商: M34556G8HFP
Rev.3.02
Dec 22, 2006
page 24 of 142
REJ03B0025-0302
4556 Group
Fig. 16 Interrupt sequence
T1F,T2F,T3F
INT
EXF0
T1
T2
T3
T1
T2
T3
T2
T3
T1
T2
T3
T1
T2
q When an interrupt request flag is set after its interrupt is enabled (Note 1)
System clock
(STCK)
The program starts
from the interrupt
address.
Interrupt enabled state
1 machine cycle
EI instruction execution cycle
Interrupt enable
flag (INTE)
Retaining level of system
clock for 4 periods or more
is necessary.
Interrupt disabled state
External
interrupt
Timer 1,
Timer 2,
Timer 3
interrupts
Interrupt activated
condition is satisfied.
Notes 1: The address is stacked to the last cycle.
2: This interval of cycles depends on the executed instruction at the time when each interrupt activated condition is satisfied.
Flag cleared
2 to 3 machine cycles
(Notes 1, 2)
(7) Interrupt sequence
Interrupts only occur when the respective INTE flag, interrupt en-
able bits (V10, V12, V13, V20), and interrupt request flag are “1.”
The interrupt actually occurs 2 to 3 machine cycles after the cycle
in which all three conditions are satisfied. The interrupt occurs after
3 machine cycles only when the three interrupt conditions are sat-
isfied on execution of other than one-cycle instructions (Refer to
Figure 16).
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