Epson CMOS 32-Bit Single Chip Microcomputer S1C33L03 Technical Manual page 110

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