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DSM2180F3 bảng dữ liệu(PDF) 44 Page - STMicroelectronics

tên linh kiện DSM2180F3
Giải thích chi tiết về linh kiện  DSM (Digital Signal Processor System Memory) for analog devices ADSP-218X family (5 V supply)
PDF  63 Pages
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
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DSM2180F3 bảng dữ liệu(HTML) 44 Page - STMicroelectronics

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AC/DC PARAMETERS
These tables describe the AD and DC parameters
of the device:
❏ DC Electrical Specification
❏ AC Timing Specification
■ PLD Timing
– Combinatorial Timing
– Synchronous Clock Mode
– Asynchronous Clock Mode
– Input Macrocell Timing
■ DSP Timing
– Read Timing
–Write Timing
– Reset Timing
The following are issues concerning the parame-
ters presented:
■ 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.
■ The AC power component gives the PLD and
Flash memory a mA/MHz specification. Figure
25 show the PLD mA/MHz as a function of the
number of Product Terms (PT) used.
■ In the PLD timing parameters, add the required
delay when Turbo bit is 0.
Figure 25. PLD ICC /Frequency Consumption
0
10
20
30
40
60
70
80
90
100
110
VCC = 5V
50
010
15
5
20
25
HIGHEST COMPOSITE FREQUENCY AT PLD INPUTS (MHz)
TURBO
ON
(100%)
TURBO
ON
(25%)
TURBO
OFF
PT 100%
PT 25%
AI02894



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