adsp-21535 STMicroelectronics, adsp-21535 Datasheet - Page 51

• Manufacturer Part Number: adsp-21535
• Description: Dsm Digital Signal Processor System Memory For Analog Devices Dsps 3.3v Supply
• Manufacturer: STMicroelectronics

AC AND DC PARAMETERS
These tables describe the AC and DC parameters
of the device:
Figure 23. PLD I
DC Electrical Specification
AC Timing Specification
PLD Timing
–
–
–
–
DSP Timing
–
–
–
Combinatorial Timing
Synchronous Clock Mode
Asynchronous Clock Mode
Input MicroCell Timing
READ Timing
WRITE Timing
Reset Timing
CC
/Frequency Consumption (3.3V)
60
50
40
30
20
10
0
0
V
HIGHEST COMPOSITE FREQUENCY AT PLD INPUTS (MHz)
CC
= 3V
5
10
15
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
23
the number of Product Terms (PT) used.
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 23.
In the PLD timing parameters, add the
required delay when Turbo Bit is ’0.’
shows the PLD mA/MHz as a function of
20
PT 100%
PT 25%
25
AI03100
DSM2150F5V
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