Xilinx Spartan 6 FPGA User Manual

30 www.xilinx.com Spartan-6 FPGA Power Management
UG394 (v1.1) September 4, 2012
Chapter 3: Lower-Power Spartan-6 LX Devices
Table 3-1 summarizes the designations for a member of the lower-power Spartan-6 LX
devices.
Lower-Power Spartan-6 LX Device Specifications
Several specifications are different for the lower-power Spartan-6 LX devices than in the
standard Spartan-6 LX family. All of the differences are listed in DS162
, Spartan-6 FPGA
Data Sheet: DC and Switching Characteristics.
The lower-power Spartan-6 LX devices require a V
CCINT
of 1.0V ±5%, or 0.95V to 1.05V. It
is not tested or guaranteed at 1.2V, and therefore the V
CCINT
cannot be scaled up and down
between 1.2V and 1.0V. In the same way, a standard Spartan-6 LX device cannot be
operated at 1.0V.
The lower-power Spartan-6 LX devices have lower-power specifications, as seen in the
data sheet for quiescent current, and in the Power Estimators for both quiescent and
dynamic current and power. See Chapter 5, Power Estimation.
Because of the reduction in maximum V
CCINT
, the maximum time for ramping up is
shorter. See the V
CCINTR
ramp time specification in DS162, Spartan-6 FPGA Data Sheet: DC
and Switching Characteristics.
Because the I/O thresholds for LVCMOS12, LVCMOS15, and LVCMOS18 are based on the
V
CCINT
level, they are slightly lower for the lower-power Spartan-6 LX devices than the
standard Spartan-6 family. See the SelectIO Interface DC Input and Output Levels table in
DS162
, Spartan-6 FPGA Data Sheet: DC and Switching Characteristics.
The lower-power Spartan-6 LX devices require V
CCAUX
= 2.5V when using the LVDS_25,
LVDS_33, BLVDS_25, LVPECL_25, RSDS_25, RSDS_33, PPDS_25, and PPDS_33
I/O standards on inputs. LVPECL_33 is not supported in these devices.
Lower-power Spartan-6 LX devices only support tap 0 of the IODELAY2.
Table 3-1: Lower-Power Spartan-6 LX Device Designation Examples
Designation Example
Ordering Code XC6SLX16-L1CSG324C
Mark
XC6SLX16
CSG324
DxxxxxxxA (lot code)
L1C
Software Family
In software choose:
Spartan6 Lower Power
Software Device XC6SLX16L-1LCSG324
Speed Specification -1L

Xilinx Spartan 6 FPGA Specifications

General

Brand	Xilinx
Model	Spartan 6 FPGA
Category	Microcontrollers
Language	English