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AD0345AS8500RF Fiches technique(PDF) 32 Page - Texas Instruments

No de pièce AD0345AS8500RF
Description  RAD-TOLERANT CLASS-V FLOATING-POINT DIGITAL SIGNAL PROCESSOR
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

AD0345AS8500RF Fiches technique(HTML) 32 Page - Texas Instruments

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2
1
1
CLKOUT1
CEx
BE[3:0]
EA[21:2]
ED[31:0]
AOE
ARE
AWE
ARDY
Setup = 2
Strobe = 5
Not ready = 2
HOLD = 1
SMJ320C6701-SP
SGUS030F – APRIL 2000 – REVISED SEPTEMBER 2013
www.ti.com
ASYNCHRONOUS MEMORY TIMING
Timing Requirements for Asynchronous Memory Cycles
(1)
(see Figure 12 and Figure 13)
NO.
MIN
MAX
UNIT
6
tsu(EDV–CKO1H)
Setup time, read EDx valid before CLKOUT1 high
4.8
ns
7
th(CKO1H–EDV)
Hold time, read EDx valid after CLKOUT1 high
1.5
ns
10
tsu(ARDY–CKO1H)
Setup time, ARDY valid before CLKOUT1 high
3.5
ns
11
th(CKO1H–ARDY)
Hold time, ARDY valid after CLKOUT1 high
1.5
ns
(1)
To ensure data setup time, simply program the strobe width wide enough. ARDY is internally synchronized. If ARDY does meet setup or
hold time, it may be recognized in the current cycle or the next cycle. Thus, ARDY can be an asynchronous input.
Switching Characteristics for Asynchronous Memory Cycles
(1)
(see Figure 12 and Figure 13)
NO.
PARAMETER
MIN
MAX
UNIT
1
td(CKO1H–CEV)
Delay time, CLKOUT1 high to CEx valid
–1
4.5
ns
2
td(CKO1H–BEV)
Delay time, CLKOUT1 high to BEx valid
4.5
ns
3
td(CKO1H–BEIV)
Delay time, CLKOUT1 high to BEx invalid
–1
ns
4
td(CKO1H–EAV)
Delay time, CLKOUT1 high to EAx valid
4.5
ns
5
td(CKO1H–EAIV)
Delay time, CLKOUT1 high to EAx invalid
–1
ns
8
td(CKO1H–AOEV)
Delay time, CLKOUT1 high to AOE valid
–1
4.5
ns
9
td(CKO1H–AREV)
Delay time, CLKOUT1 high to ARE valid
–1
4.5
ns
12
td(CKO1H–EDV)
Delay time, CLKOUT1 high to EDx valid
4.5
ns
13
td(CKO1H–EDIV)
Delay time, CLKOUT1 high to EDx invalid
–1
ns
14
td(CKO1H–AWEV)
Delay time, CLKOUT1 high to AWE valid
–1
4.5
ns
(1)
The minimum delay is also the minimum output hold after CLKOUT1 high.
Figure 12. Asynchronous Memory Read Timing
32
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Product Folder Links: SMJ320C6701-SP


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