Specifications ispLSI 2128E

8

Power Consumption

Power consumption in the ispLSI 2128E device depends

on two primary factors: the speed at which the device is

operating and the number of Product Terms used.

Figure 3 shows the relationship between power and

operating speed.

Figure 3. Typical Device Power Consumption vs fmax

0127/2128E

ICC can be estimated for the ispLSI 2128E using the following equation:

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 ICC estimate is based on typical conditions (VCC = 5.0V, room temperature) and an assumption of two GLB loads

on average exists. These values are for estimates only. Since the value of ICC is sensitive to operating conditions

and the program in the device, the actual ICC should be verified.

100

200

300

350

400

450

500

0

20

40

60

80

100 120

140

160 180

Notes: Configuration of eight 16-bit counters

Typical current at 5V, 25

° C

250

150

ispLSI 2128E