Specifications
ispLSI 1024/883
Maximum GRP Delay vs GLB Loads
6
GRP Delay (ns)
ispLSI 1024-60
5
4
3
2
1
0
4
8
GLB Loads
12
16
0126A-80-24-mil.eps
Power Consumption
Power consumption in the ispLSI 1024/883 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
200
ispLSI 1024
used. Figure 3 shows the relationship between power
and operating speed.
150
I
CC (mA)
100
50
0
10
20
30
40
50
60
70
80
f
max (MHz)
Notes: Configuration of Six 16-bit Counters
Typical Current at 5V, 25˚C
ICC can be estimated for the ispLSI 1024 using the following equation:
ICC = 42 + (# of PTs * 0.45) + (# of nets * Max. freq * 0.008) 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 2 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.
0127A-24-80-isp
9
LATTICE [ LATTICE SEMICONDUCTOR ]
