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DSM2190F4V датащи(PDF) 42 Page - STMicroelectronics

номер детали DSM2190F4V
подробное описание детали  DSM (Digital Signal Processor System Memory) For Analog Devices ADSP-2191 DSPs (3.3V Supply)
PDF  61 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
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DSM2190F4V датащи(HTML) 42 Page - STMicroelectronics

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AC/DC PARAMETERS
These tables describe the AC and DC parameters
of the device:
t DC Electrical Specification
t AC Timing Specification
s
PLD Timing
– Combinatorial Timing
– Synchronous Clock Mode
– Asynchronous Clock Mode
– Input Macrocell Timing
s
DSP Timing
– Read Timing
–Write Timing
– Reset Timing
The following are issues concerning the parame-
ters presented:
s
In the DC specification the supply current is
given for different modes of operation. Before
calculating the total power consumption,
determine the percentage of time that the
device is in each mode. Also, the supply power
is considerably different if the Turbo bit is 0.
s
The AC power component gives the PLD and
Flash memory a mA/MHz specification. Figure
25 shows the PLD mA/MHz as a function of the
number of Product Terms (PT) used.
s
The fitter report of PSDsoft Express indicates
the number of Product Terms (PTs) used for a
given design. This number may be used to
estimate PLD power consumption using Figure
25.
s
In the PLD timing parameters, add the required
delay when Turbo bit is 0.
Figure 25. PLD ICC /Frequency Consumption (3.3 V)
0
10
20
30
40
50
60
VCC = 3V
010
15
5
20
25
TURBO
ON (100%)
TURBO
ON (25%)
TURBO
OFF
HIGHEST COMPOSITE FREQUENCY AT PLD INPUTS (MHz)
PT 100%
PT 25%
AI03100



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