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HD404849FS Datasheet(PDF) 39 Page - Renesas Technology Corp

Part # HD404849FS
Description  4-Bit Single-Chip Microcomputer
PDF  127 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

HD404849FS Datasheet(HTML) 39 Page - Renesas Technology Corp

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HD404849 Series
37
MCU operation
cycle
IF = 1?
Instruction
execution
SBY/STOP
instruction?
PC
Next
location
PC
Vector
address
Low-power mode
operation cycle
IE
0
Stack
(PC),
(CA),
(ST)
IM = 0 and
IE = 1?
←
←
←
Yes
No
No
Yes
Yes
No
IF:
IM:
IE:
PC:
CA:
ST:
←
Interrupt request flag
Interrupt mask
Interrupt enable flag
Program counter
Carry flag
Status flag
Figure 21 MCU Operating Sequence (MCU Operation Cycle)



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