EPM9320LI84-20 Datasheet, PDF (36/46 Pages) Altera Corporation – Programmable Logic Device Family

MAX 9000 Programmable Logic Device Family Data Sheet
The parameters in this equation are shown below:
MC_TON = Number of macrocells with the Turbo Bit option turned on,
as reported in the MAX+PLUS II Report File (.rpt)
MC_DEV = Number of macrocells in the device
MC_USED = Number of macrocells used in the design, as reported in the
MAX+PLUS II Report File
f _MAX
tog_LC
= Highest clock frequency to the device
= Average percentage of logic cells toggling at each clock
(typically 12.5%)
A, B, C = Constants, shown in Table 25
Table 25. MAX 9000 I_CC Equation Constants
Device
EPM9320
EPM9320A
EPM9400
EPM9480
EPM9560
EPM9560A
Constant A
0.81
0.56
0.60
0.68
0.68
0.56
Constant B
0.33
0.31
0.33
0.29
0.26
0.31
Constant C
0.056
0.024
0.053
0.064
0.052
0.024
This calculation provides an I_CC estimate based on typical conditions with
no output load, using a typical pattern of a 16-bit, loadable, enabled
up/down counter in each LAB. Actual I_CC values should be verified
during operation, because the measurement is sensitive to the actual
pattern in the device and the environmental operating conditions.
Figure 15 shows typical supply current versus frequency for MAX 9000
devices.
36
Altera Corporation