Specifications ispLSI 3256A

10

Power Consumption

Figure 3. Typical Device Power Consumption vs fmax

Power consumption in the ispLSI 3256A 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.

0127A-16-80-isp/3256A

ICC can be estimated for the ispLSI 3256A using the following equation:

ICC = 40 + (# of PTs * 0.31) + (# of nets * Max. freq * 0.0094) 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

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.

Notes: Configuration of 16 16-bit Counters

Typical Current at 5V, 25

° C

200

300

400

0

1020

3040

50

60

70

ispLSI 3256A

80

90

100