EPF10K30E Datasheet, PDF (94/100 Pages) Altera Corporation – Embedded Programmable Logic Device

FLEX 10KE Embedded Programmable Logic Devices Data Sheet
Power
Consumption
The supply power (P) for FLEX 10KE devices can be calculated with the
following equation:
P = P_INT + P_IO = (I_CCSTANDBY + I_CCACTIVE) × V_CC + P_IO
The I_CCACTIVE value depends on the switching frequency and the
application logic. This value is calculated based on the amount of current
that each LE typically consumes. The P_IO value, which depends on the
device output load characteristics and switching frequency, can be
calculated using the guidelines given in Application Note 74 (Evaluating
Power for Altera Devices).
Compared to the rest of the device, the embedded array consumes a
negligible amount of power. Therefore, the embedded array can be
ignored when calculating supply current.
The I_CCACTIVE value can be calculated with the following equation:
I_CCACTIVE = K × f_MAX × N × tog_LC × _M------H----^µ-z---A-_×-----L----E--
Where:
f_MAX
N
tog_LC
K
= Maximum operating frequency in MHz
= Total number of LEs used in the device
= Average percent of LEs toggling at each clock
(typically 12.5%)
= Constant
Table 80 provides the constant (K) values for FLEX 10KE devices.
Table 80. FLEX 10KE K Constant Values
Device
EPF10K30E
EPF10K50E
EPF10K50S
EPF10K100E
EPF10K130E
EPF10K200E
EPF10K200S
K Value
4.5
4.8
4.5
4.5
4.6
4.8
4.6
This calculation provides an I_CC estimate based on typical conditions with
no output load. The actual I_CC should be verified during operation
because this measurement is sensitive to the actual pattern in the device
and the environmental operating conditions.
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Altera Corporation