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H8SX1663 Scheda tecnica(PDF) 340 Page - Renesas Technology Corp

Il numero della parte H8SX1663
Spiegazioni elettronici  Renesas 32-Bit CISC Microcomputer H8SX Family / H8SX/1600 Series
PDF  1158 Pages
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Produttore elettronici  RENESAS [Renesas Technology Corp]
Homepage  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

H8SX1663 Scheda tecnica(HTML) 340 Page - Renesas Technology Corp

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Section 6 Bus Controller (BSC)
Rev.1.00 Jun. 07, 2006 Page 288 of 1102
REJ09B0294-0100
(4) When CKSPE = 1
When the SDRAM space is read, the read data settling cycle can be inserted for one cycle using
the clock suspend mode. To enter the clock suspend mode, set the OEE bit
to 1, and connect the CKE pin.
Figure 6.87 shows an output timing example of the
DACK signal when CKSPE = 1 with DDS = 1
and DKC = 0.
T
p
T
r
T
c1
T
cl
T
sp
T
c2
T
c1
T
cl
T
sp
T
c2
CS
Precharge-sel
RAS
CAS
WE
CKE
PALL ACTV READ
READ
NOP
NOP
DQMLU
DQMLL
D7 to D0
BS
DACK
RD/
WR
D15 to D8
SD
φ
Address bus
Row address
Column address 2
Column address 1
Row
address
Figure 6.87 Output Timing Example of
DACK when CKSPE = 1
(Read, CAS Latency = 2)



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