
766
CK
A21–A0
Tp
Tr
Tc1
Tc2
Tc1
Tc2
t
AD
t
AD
t
ASR
t
RASD1
t
RAH
t
RP
t
CASD1
t
CASD2
t
CASD1
t
CASD2
t
RASD2
t
CP
t
AA
t
CAC
t
AA
t
RAC
t
RDS
t
RDH
t
RDS
t
RDH
t
CAC
t
CASD1
t
CASD2
t
CASD1
t
CASD2
t
RWD2
t
RWD1
t
RWD2
t
RWD1
t
DH
t
DS
t
WDD
t
WDH
t
WDD
t
WDH
t
DH
t
DS
t
CP
t
DACKD1
t
DACKD1
t
RSD1
t
WSD1
t
WSD2
t
WSD1
t
WSD2
t
RSD2
t
RSD1
t
RSD2
t
DACKD1
RAS
CASxx
RDWR
D31–D0
CASxx
RDWR
D31–D0
DACKn
RD
WRxx
(During read)
(During read)
(During read)
(During read)
(During write)
(During write)
(During write)
(During write)
Note: t
RDH
is specified from fastest negate timing of A21–A0,
RAS
, and
CAS
.
Row address
Column address
Column address
Figure 25.16 DRAM Cycle (High-Speed Page Mode)
CK
RDWR
TRp
TRr1
TRr2
TRc
TRc
t
RASD1
t
RASD2
t
CASD2
t
CSR
t
CASD1
RAS
CASxx
Figure 25.17 CAS Before RAS Refresh (TRAS1
=
0, TRAS0
=
0)
Summary of Contents for SH7041 Series
Page 2: ......
Page 6: ......
Page 38: ...xvi ...
Page 44: ...6 ...
Page 46: ...8 ...
Page 48: ...10 ...
Page 82: ...44 ...
Page 114: ...76 ...
Page 118: ...80 ...
Page 124: ...86 ...
Page 170: ...132 ...
Page 250: ...212 ...
Page 492: ...454 ...
Page 506: ...468 ...
Page 604: ...566 ...
Page 684: ...646 ...
Page 706: ...668 ...
Page 778: ...740 ...
Page 780: ...742 ...
Page 818: ...780 ...
Page 850: ...812 ...
Page 923: ...SH7040 SH7041 SH7042 SH7043 SH7044 SH7045 Group Hardware Manual REJ09B0044 0600O ...