Specifications ispLSI 2128VE
Power Consumption
used. Figure 3 shows the relationship between power
and operating speed.
Power consumption in the ispLSI 2128VE device de-
pends on two primary factors: the speed at which the
device is operating and the number of Product Terms
Figure 3. Typical Device Power Consumption vs fmax
350
300
ispLSI 2128VE
250
200
150
100
0
50
100
150
200
250
f
max (MHz)
Notes: Configuration of eight 16-bit counters
Typical current at 3.3V, 25¡ C
I
I
can be estimated for the ispLSI 2128VE using the following equation:
CC
CC
=
8 + (# of PTs 0.669) + (# of nets max freq 0.0026)
* * *
Where:
# of PTs = Number of Product Terms used in design
# of nets = Number of Signals used in device
Max freq = Highest Clock Frequency to the device (in MHz)
The
I
estimate is based on typical conditions (V
= 3.3V, room temperature) and an assumption
CC
CC
of two GLB loads on average exists. These values are for estimates only. Since the value of
sensitive to operating conditions and the program in the device, the actual
I
is
CC
should be verified.
I
CC
0127/2128VE
10
LATTICE [ LATTICE SEMICONDUCTOR ]
