Renesas SH7670 Series User Manual page 33

2
ACT
Tr
CKIO
CKE
tCSD1
CS3#
tRASD1
RASL#
CASL#
RD/WR#
tDQMD1
DQMUU-LL
tAD1
A11-A2(A9-A0)
tAD1
A12(A10/AP)
tAD1
A15,A14(BA1,0)
D0-31
Rev.1.01 2008.05.07
REJ11J0012-0101
SDRAM SINGLE READ
tRC tRC
tRAS tRAS
READA
Trw1 Trw2 Tc1 Tcw Td1
tSI
tRASD1
tHI
tSI
tHI
tSI
tCASD1
tCASD1
tAD1 tAD1
tAD1 tAD1
tAD1 tAD1
tLZ
tAC
Data
Figure 2.3.4 SDRAM Single Read/Write Timing Example
SDRAM SINGLE WRITE
tRP tRP
tRCD tRCD
ACT
Tde Tap Tr Trw1 Trw2
tSI
tHI
tCSD1 tCSD1
tRASD1
tRASD1
tDQMD1 tDQMD1
tAD1
tAD1
tAD1
tRDS2
tRDH2
tOH
tOHZ
Functional Overview
2.3.3 External SDRAM
tRC tRC
tRAS tRAS tRP tRP
tDPL tDPL
tDAL tDAL
WRITEA ACT
Tc1 Trw11 Trw12 Tap Tr
tHI
tCSD1
tCASD1
tCASD1
tRWD1
tRWD1
tDQMD1
tAD1 tAD1
tAD1 tAD1
tAD1 tAD1
tHI
tSI
tWDD2
tWDH2
2-19