LM3S9790 Datasheet, PDF (1124/1185 Pages) Texas Instruments – Stellaris® LM3S9790 Microcontroller

Electrical Characteristics
Figure 26-14. SDRAM Write Timing
CLK
(EPI0S31)
CKE
(EPI0S30)
CSn
(EPI0S29)
WEn
(EPI0S28)
RASn
(EPI0S19)
CASn
(EPI0S18)
DQMH, DQML
(EPI0S [17:16])
AD [15:0]
(EPI0S [15:0])
E4
E5
Row
Activate
NOP
NOP
AD [15:0] driven out
Column-1
Write
Data 0
Data 1
...
AD [15:0] driven out
E6
Data n
Burst
Term
Table 26-26. EPI Host-Bus 8 and Host-Bus 16 Interface Characteristics
Parameter No Parameter
Parameter Name
Min
E14
t_ISU
Read data set up time
10
E15
t_IH
Read data hold time
0
E16
t_DV
WEn to write data valid
-
E17
t_DI
Data hold from WEn invalid
2
E18
t_OV
CSn to output valid
-5
E19
t_OINV
CSn to output invalid
-5
E20
t_STLOW
WEn / RDn strobe width low
2
E21
t_FIFO
FEMPTY and FFULL setup time to
2
clock edge
E22
t_ALEHIGH ALE width high
-
E23
t_CSLOW
CSn width low
4
E24
t_ALEST
ALE rising to WEn / RDn strobe falling 2
Nom Max
-
-
-
-
-
5
-
-
-
5
-
5
-
-
-
-
1
-
-
-
-
-
Unit
ns
ns
ns
EPI Clocks
ns
ns
EPI Clocks
System Clocks
EPI Clocks
EPI Clocks
EPI Clocks
1124
Texas Instruments-Advance Information
June 14, 2010