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AD0345AS8500RF Fiches technique(PDF) 30 Page - Texas Instruments

No de pièce AD0345AS8500RF
Description  RAD-TOLERANT CLASS-V FLOATING-POINT DIGITAL SIGNAL PROCESSOR
Download  61 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

AD0345AS8500RF Fiches technique(HTML) 30 Page - Texas Instruments

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CLKOUT1
1
3
4
4
2
CLKIN
1
2
3
4
4
SMJ320C6701-SP
SGUS030F – APRIL 2000 – REVISED SEPTEMBER 2013
www.ti.com
INPUT AND OUTPUT CLOCKS
Timing Requirements for CLKIN
(1)
(see Figure 8)
CLKMODE = x4
CLKMODE = x1
NO.
UNIT
MIN
MAX
MIN
MAX
1
tc(CLKIN)
Cycle time, CLKIN
28.4
7.1
ns
Pulse duration,
2
tw(CLKINH)
0.4C(2) (3)
0.45C(2) (3)
ns
CLKIN high
Pulse duration,
3
tw(CLKINL)
0.4C(2) (3)
0.45C(2) (3)
ns
CLKIN low
4
tt(CLKIN)
Transition time, CLKIN
5(2)
0.6(2)
ns
(1)
The reference points for the rise and fall transitions ar measured at 20% and 80%, respectively, of VIH.
(2)
This parameter is not tested.
(3)
C = CLKIN cycle time in ns. For example, when CLKIN frequency is 10 MHz, use C = 100 ns.
Figure 8. CLKIN Timing
Switching Characteristics for CLKOUT1
(1) (2)
(see Figure 9)
CLKMODE = x4
CLKMODE = x1
NO.
PARAMETER
UNIT
MIN
MAX
MIN
MAX
1
tc(CKO1)
Cycle time, CLKOUT1
P – 0.7(3)
P + 0.7(3)
P – 0.7(3)
P + 0.7(3)
ns
2
tw(CKO1H)
Pulse duration, CLKOUT1 high
(P/2) – 0.5(3)
(P/2) + 0.5(3)
PH – 0.5(3)
PH + 0.5(3)
ns
3
tw(CKO1L)
Pulse duration, CLKOUT1 low
(P/2) – 0.5(3)
(P/2) + 0.5(3)
PL – 0.5(3)
PL + 0.5(3)
ns
4
tt(CKO1)
Transition time, CLKOUT1
0.6(3)
0.6(3)
ns
(1)
P = 1/CPU clock frequency in nanoseconds (ns).
(2)
PH is the high period of CLKIN in ns and PL is the low period of CLKIN in ns.
(3)
This parameter is not tested.
Figure 9. CLKOUT1 Timing
30
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Product Folder Links: SMJ320C6701-SP


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