TM4C1294NCPDT Datasheet, PDF (1858/1890 Pages) Texas Instruments – Tiva Microcontroller

Electrical Characteristics
Figure 27-25. General-Purpose Mode Read and Write Timing
Clock
(EPI0S31)
Frame
(EPI0S30)
RD
(EPI0S29)
WR
(EPI0S28)
Address
Data
E25
E30
E26
E27
E28
Data
E29
Read
E30
E31
Data
Write
Note: This figure illustrates accesses where the FRM50 bit is clear, the FRMCNT field is 0x0 and the
WR2CYC bit is clear.
Table 27-43. EPI PSRAM Interface Characteristics
Parameter No Parameter
Parameter Name
Min Nom Max
Unit
E33
T_EPICLK
EPI_CLK period
20
-
-
ns
E34
T_RTFT
EPI_CLK rise or fall time
-
-
1.8
ns
E35
T_OV
Falling EPI_CLK to Address/Write Data or
4.5
Control output valid^a
-
20
ns
E36
T_HT
Falling EPI_CLK to Address/Write Data or
Control hold time^a
2
-
-
ns
E37
T_SUP
Read data setup time from EPI_CLK rising
-
-
9
ns
E38
T_DH
Read data output hold from EPI_CLK rising 0
-
-
ns
E39
T_IRV
iRDY setup time
-
-
9
ns
E40
T_IRH
iRDY hold time
-
-
9
ns
a. Control output includes WRn, RDn, OEn, BSELn, ALE, and CSn.
1858
Texas Instruments-Production Data
June 18, 2014