
DS053 (v2.6) April 15, 2005
Product Specification
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Features
36 macrocells with 800 usable gates
-
44-pin PLCC (34 user I/O pins)
-
44-pin VQFP (34 user I/O pins)
-
48-pin CSP (36 user I/O pins)
Optimized for high-performance 2.5V systems
-
Low power operation
-
Multi-voltage operation
Advanced system features
-
In-system programmable
-
Superior pin-locking and routability with
Fast CONNECT II switch matrix
-
Extra wide 54-input Function Blocks
-
Up to 90 product-terms per macrocell with
individual product-term allocation
-
Local clock inversion with three global and one
product-term clocks
-
Individual output enable per output pin
-
Input hysteresis on all user and boundary-scan pin
inputs
-
Bus-hold circuitry on all user pin inputs
-
Full IEEE Standard 1149.1 boundary-scan (JTAG)
Fast concurrent programming
Slew rate control on individual outputs
Enhanced data security features
Excellent quality and reliability
-
20 year data retention
-
ESD protection exceeding 2,000V
Pin-compatible with 3.3V-core XC9536XL device in the
44-pin PLCC, 44-pin VQFP, and 48-pin CSP packages
Description
The XC9536XV is a 2.5V CPLD targeted for high-perfor-
mance, low-voltage applications in leading-edge communi-
cations and computing systems. It is comprised of two
54V18 Function Blocks, providing 800 usable gates with
propagation delays of 5 ns. See
Figure 2
for architecture
overview.
Power Estimation
Power dissipation in CPLDs can vary substantially depend-
ing on the system frequency, design application and output
loading. To help reduce power dissipation, each macrocell
in a XC9500XV device may be configured for low-power
mode (from the default high-performance mode). In addi-
tion, unused product-terms and macrocells are automati-
cally deactivated by the software to further conserve power.
For a general estimate of I
CC
, the following equation may be
used:
P
TOTAL
= P
INT
+ P
IO
= I
CCINT
x V
CCINT
+ P
IO
Separating internal and I/O power here is convenient
because XC9500XV CPLDs also separate the correspond-
ing power pins. P
IO
is a strong function of the load capaci-
tance driven, so it is handled by I = CVf. I
CCINT
is another
situation that reflects the actual design considered and the
internal switching speeds. An estimation expression for
I
CCINT
(taken from simulation) is:
I
CCINT
(mA) = MC
HS
(0.122 X PT
HS
+ 0.238) + MC
LP
(0.042 x
PT
LP
+ 0.171) + 0.04(MC
HS
+ MC
LP
) x f
MAX
x MC
TOG
where:
MC
HS
= # macrocells used in high speed mode
MC
LP
= #macrocells used in low power mode
PT
HS
= average p-terms used per high speed macrocell
PT
LP
= average p-terms used over low power macrocell
f
MAX
= max clocking frequency in the device
MC
TOG
= % macrocells toggling on each clock (12% is
frequently a good estimate
This calculation was derived from laboratory measurements
of an XC9500XV part filled with 16-bit counters and allowing
a single output (the LSB) to be enabled. The actual I
CC
value varies with the design application and should be veri-
fied during normal system operation.
Figure 1
shows the
above estimation in a graphical form. For a more detailed
discussion of power consumption in this device, see Xilinx
application note
XAPP361, “Planning for High Speed
XC9500XV Designs.”
0
XC9536XV High-performance
CPLD
DS053 (v2.6) April 15, 2005
0
1
Product Specification
R
Figure 1:
Typical I
CC
vs. Frequency for XC9536XV
Clock Frequency (MHz)
T
C
0
100
200
DS053_01_121501
60
20
120 MHz
200 MHz
30
L
ow Power
150
50
10
40
50
Hi
g
h Performance