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ST40RA Datenblatt(PDF) 51 Page - STMicroelectronics

Teilenummer ST40RA
Bauteilbeschribung  32-bit Embedded SuperH Device
PDF  94 Pages
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Hersteller  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST40RA Datenblatt(HTML) 51 Page - STMicroelectronics

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7 Electrical specifications
ST40RA
51/94
STMicroelectronics
ADCS 7260755H
7.4
LMI interface (SDRAM) AC specifications
Figure 11: LMI SDRAM mode timings
Symbol
Parameter
Min
Max
Units
Note
tLCHLCH
LMI clock period
10
ns
tLCHLCL
LMI clock high time
0.45
tLCHLCH
tLCLLCH
LMI clock low period
0.45
tLCHLCH
tLCHLOV
LCLKOUT low to output signals valid
-2
2
ns
tLCHLOZ
LCLKOUT high to outputs tri-state
0
2
ns
tLCHLON
LCLKOUT high to outputs on
-2
ns
tLIVLCH
Input signals valid to LCLKOUT high
2
ns
tLCHLIX
Input signals hold after LCLKOUT high
2
ns
Table 26: LMI SDRAM AC timings
Tri-state outputs
LCLKOUTA
Outputs
tLCLLOV
tLCHLON
tLCHLOZ
Inputs
tLCHLIX
tLIVLCH
tLCHLCH
tLCHLCL
tLCLLCH
LCLKOUTB



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