Power Characterisation for Fine-Grain Reconfigurable Fabrics

Table 1

Comparison of devices and low-power features.

Device manufacturer	Xilinx	Lattice	Actel	Silicon Blue
Device Name	Spartan-3A,	Mach XO	IGLOO	iCE65
	Spartan-3AN
Device size [LUTs]	1.6 k–53 k	256–2.3 k	192–36 k (*)	1.8 k–17 k
Low-power feature	Suspend mode	Sleep mode	Flash freeze	iCEgate
Wake-up time [𝜇s]	100–500	1000	1	Instant
Retain state	Yes	No	Yes	Yes

(*) device does not provide LUT/FF pairs like all other devices, reconfigurable tiles can be used as LUT or FF.