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D17133CS Datasheet(PDF) 172 Page - NEC

Part # D17133CS
Description  4-BIT SINGLE-CHIP MICROCONTROLLER
PDF  289 Pages
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

D17133CS Datasheet(HTML) 172 Page - NEC

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CHAPTER 14
INTERRUPT FUNCTIONS
157
Figure 14-4. Interrupt Acceptance Timing Chart (INTE=1 and IP
×××=1) (3/3)
<8> When an interrupt has occurred during skipping (NOP handling) by a skip instruction
Remarks 1. The INT cycle is for preparing interrupts. During this cycle, PC and PSWORD saving and IRQ clearing
are performed.
2. For execution of the MOVT instruction, two instruction cycles are exceptionally required.
3. The EI instruction is considered to prevent multiple interrupts from occurring when returning from
the interrupt operation.
Machine cycle
Instruction
IRQ
×××
M0
Skip instruction
INT cycle
M1
M2
M3
M0
M1
M2
M3
M0
M1
M2
M3
M0
M1
Vector address
instruction
Interrupt occurrence recognized
Handled as NOP



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