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STA1095 Folha de dados(PDF) 86 Page - STMicroelectronics

Nome de Peças STA1095
Descrição Electrónicos  Accordo2 family – Automotive dual core processor for car radio and display audio application
PDF  127 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STA1095 Folha de dados(HTML) 86 Page - STMicroelectronics

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Electrical Characteristics
STA108x, STA109x
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DS13319 Rev 2
4.17
SDRAM Interface Timing
4.17.1
SDRAM Interface Input Timings
Table 51. SDRAM Input Timings
Figure 25. SDRAM Input Timings
4.17.2
SDRAM Interface Output Timings
Table 52. SDRAM Output Timings
Symbol
Parameter
Timing
Unit
Cload
[pF]
Min
Max
Fc
S
Clock frequency
-
166
MHz
10
tISU
S
Input setup time
0.3
-
ns
-
tIH
S
Input hold time
1.5
-
ns
-
tIH
tpp = 1/Fc
50% VDD
50% VDD
tISU
SDRAM_FBCLK
SDRAM DATA
invalid
Symbol
Parameter
Timing
Unit
Cload
[pF]
Min
Max
Fc
S
Clock frequency
166
MHz
10
tDO
S
Data output delay@166MHZ(1)
3.6
ns
10
tHO
S
Data hold time
1
ns
10
1. Internally data is launched at the negative edge of the clock. The output delay can be expressed as 1/Fc*0.55+.3. The
multiplication factor 0f 0.55 is used to represent the duty cycle variation of the clock due to IO pads. 0.3 ns is the data travel
time from the flop to the IO pad. At 112 MHz the max data output delay is 5.19 ns.



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