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8 ELECTRICAL CHARACTERISTICS
A-94 EPSON S1C33L03 PRODUCT PART
SDRAM auto-refresh cycle
t
CASD2
BCLK
SDCKE
A[23:0]
SDA10
#SDCEx
#SDRAS
#SDCAS
#SDWE
D[15:0]
HDQM/
LDQM
Auto refresh nop nop
H
t
CED1
t
CED2
t
WED1
t
WED2
nop nop
t
RASD1
t
RASD2
t
CASD1
∗ A precharge cycle is necessary before entering the auto refresh mode.
SDRAM self-refresh cycle
BCLK
SDCKE
A[23:0]
SDA10
#SDCEx
#SDRAS
#SDCAS
#SDWE
D[15:0]
HDQM/
LDQM
t
CED1
t
CED2
t
WED1
Exit self refresh modeEnter self refresh mode
t
RASD1
t
CASD1
t
CKE1
t
CKE2
∗ A precharge cycle is necessary before entering the self refresh mode.