Hitachi SH7032 - Page 540

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CK
RAS
CAS
WRH,
WRL,
WR
T
Rp
T
Rr
T
Rc
t
RASD1
t
RASD2
t
CASD3
t
CASD2
t
CSR
Figure 20.29 CAS-before-RAS Refresh (Short-Pitch)
CK
RAS
CAS
WRH,
WRL,
WR 

T
Rp
T
Rc
T
Rc
t
RASD1
t
RASD2
t
CASD3
t
CASD2
T
Rr
t
CSR
Figure 20.30 CAS-before-RAS Refresh (Long-Pitch)
CK
RAS
CAS
T
Rp
T
Rc
T
Rcc
t
RASD1
t
CASD3
t
CASD2
T
Rr
t
CSR
t
RASD2
Figure 20.31 Self-Refresh