LM3S1621 Datasheet, PDF (900/947 Pages) Texas Instruments – ARM and Thumb are registered trademarks and Cortex is a trademark

Electrical Characteristics
Figure 21-18. Host-Bus 8/16 Mode Muxed Read Timing
E22
ALE (EPI0S30)
E18
E23
CSn (EPI0S30)
WRn (EPI0S29)
RDn/OEn
(EPI0S28)
BSEL0n/
BSEL1n^a
Muxed
Address/Data
E18
E24
E25
Address
a _{BSEL0n and BSEL1n are available in Host-Bus 16 mode only.}
E19
E20
E14
E15
Data
Figure 21-19. Host-Bus 8/16 Mode Muxed Write Timing
E22
ALE
(EPI0S30)
E18
CSn
E23
(EPI0S30)
WRn
E18
E19
E20
(EPI0S29)
E24
RDn/Oen
(EPI0S28)
BSEL0n
BSEL1n^a
Muxed
Address/Data
E16
Address
Data
a _{BSEL0n and BSEL1n are available in Host-Bus 16 mode only.}
Table 21-24. EPI General-Purpose Interface Characteristics
Parameter No Parameter
Parameter Name
Min Nom Max
Unit
E25
T_CK
General-Purpose Clock period
E26
T_CH
General-Purpose Clock high time
20
-
-
ns
10
-
-
ns
E27
T_CL
General-Purpose Clock low time
10
-
-
ns
E28
T_ISU
Input signal set up time to rising clock edge
10
-
-
ns
E29
T_IH
Input signal hold time from rising clock edge
0
-
-
ns
E30
T_DV
Falling clock edge to output valid
-5
-
5
ns
E31
T_DI
Falling clock edge to output invalid
-5
-
5
ns
E32
T_RDYSU iRDY assertion or deassertion set up time to
10
-
-
ns
falling clock edge
900
January 21, 2012
Texas Instruments-Production Data