LM3S9B81 Datasheet, PDF (1094/1155 Pages) Texas Instruments – Stellaris® LM3S9B81 Microcontroller

Electrical Characteristics
Table 25-23. EPI General-Purpose Interface Characteristics (continued)
Parameter No
E29
E30
E31
E32
Parameter
Parameter Name
t_IH
t_DV
t_DI
t_RDYSU
Input signal hold time from rising clock edge
Falling clock edge to output valid
Falling clock edge to output invalid
iRDY assertion or deassertion set up time to
falling clock edge
Min
Nom Max
10
-
-
-5
-
5
-5
-
5
20
-
-
Unit
ns
ns
ns
ns
Figure 25-15. General-Purpose Mode Read and Write Timing
Clock
(EPI0S31)
Frame
(EPI0S30)
RD
(EPI0S29)
WR
(EPI0S28)
Address
Data
E25
E27
E30
E28
Data
E29
Read
E30
E31
Data
Write
The above figure illustrates accesses where the FRM50 bit is clear, the FRMCNT field is 0x0, the
RD2CYC bit is clear, and the WR2CYC bit is clear.
Figure 25-16. General-Purpose Mode iRDY Timing
Clock
(EPI0S31)
Frame
(EPI0S30)
E26
E26
RD
(EPI0S29)
iRDY
(EPI0S27)
Address
Data
1094
Texas Instruments-Advance Information
June 29, 2010