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CDP1802AC датащи(PDF) 12 Page - Renesas Technology Corp

номер детали CDP1802AC
подробное описание детали  High-Reliability CMOS 8-Bit Microprocessor
PDF  27 Pages
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производитель  RENESAS [Renesas Technology Corp]
домашняя страница  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

CDP1802AC датащи(HTML) 12 Page - Renesas Technology Corp

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CDP1802AC/3
FN1441 Rev 3.00
Page 12 of 27
October 17, 2008
FIGURE 10. DMA IN CYCLE TIMING WAVEFORMS
FIGURE 11. DMA OUT CYCLE TIMING WAVEFORMS
Machine Cycle Timing Waveforms (Propagation Delays Not Shown) (Continued)
CLOCK
01
2
3
45
6
7
01
2
3
4
5
6
7
01
2
3
TPA
TPB
MACHINE
INSTRUCTION
DMA-IN
MRD
MWR
MEMORY
DATA BUS
CYCLE
OUTPUT
45
67
NOTE: USER GENERATED SIGNAL
MEMORY READ CYCLE
MEMORY READ, WRITE
MEMORY WRITE CYCLE
OR NON-MEMORY CYCLE
“DON’T CARE” OR INTERNAL DELAYS
HIGH IMPEDANCE STATE
(NOTE)
VALID DATA FROM INPUT DEVICE
CYCLE n
FETCH (S0)
CYCLE (n+1)
EXECUTE (S1)
CYCLE (n+2)
DMA (S2)
VALID OUTPUT
0
1
2
345
67
01
23
45
67
01
234
56
CLOCK
TPA
TPB
MACHINE
CYCLE
INSTRUCTION
DMA OUT
MRD
MWR
MEMORY
OUTPUT
DATA
STROBE
(S2 ² TPB)
CYCLE n
CYCLE (n + 1)
CYCLE (n + 2)
DMA (S2)
EXECUTE (S1)
FETCH (S0)
VALID OUTPUT
VALID DATA FROM MEMORY
NOTE: USER GENERATED SIGNAL
MEMORY READ CYCLE
MEMORY READ, WRITE
MEMORY READ CYCLE
OR NON-MEMORY CYCLE
“DON’T CARE” OR INTERNAL DELAYS
HIGH IMPEDANCE STATE
(NOTE)
(NOTE)



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