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CHAPTER 3 CPU
G
At end of data counter (DCT) (DCT ≠ 0, ISCS: SE=0)
At completion of data transfer by the EI
time is added. The EI
2
El
OS Processing Time after count finish
OS Processing Time at continuing data transfer + (21 + 6 × Z)
2
=El
The interrupt handling time depends on the address set by the stack pointer. Table 3.5-12 shows the
compensation value (Z) of the interrupt handling time.
Table 3.5-12 Compensation Value (Z) of Interrupt Handling Time
For internal area (even address)
For internal area (odd address)
G
At termination by termination request from peripheral (DCT ≠ 0, ISCS=1)
If data transfer by the EI
(ICR: S1, S0 = "11
termination request from a resource is calculated as follows:
El
Reference:
One machine cycle is equal to one clock cycle of the machine clock (φ).
88
2
OS processing time at the end of counting is calculated by the following expression.
Address Set by Stack Pointer
2
OS is terminated during its processing by the termination request from a resource
"), processing transits to interrupt processing. The EI
B
OS Processing Time at halting =36 + 6 × Z
2
2
OS, since the hardware interrupt is started, the interrupt handling
Interrupt handling time
(Z: compensation value of interrupt handling time)
Compensation Value (Z)
Machine cycle
(Z: compensation value of interrupt handling time)
Machine clock
0
+2
2
OS processing time at a
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