ARRAY FAMILY Table 3 shows the 20 base arrays in the KZ400GH/KZ400EH
Series. Array utilization depends on design, and typically varies from
33 to 46% in DLM (Double Layer Metal) technology, from 50 to
69% in TLM (Triple Layer Metal) technology, and from 66 to 90%
in QLM (Quadruple Layer Metal). A compute cell or a drive cell
is counted as a gate. Kawasaki LSI offers an option to compile and
fabricate a custom sized array for high-volume designs.
Cluster
Compute Section Drive Section
Table 3 KZ400GH/KZ400EH Masterslice Selection
Figure 1 CMOS-CBA Array Core Architecture
P
AD
C
OUNT
(
BY
P
AD
P
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) U
SABLE
G
ATES
A
RRAY
I
NDEX
S
TANDARD
F
INE
R
AW
G
ATES
DLM TLM QLM
006 108 112 61,500 28,100 42,200 55,300
009 128 136 87,600 38,200 57,400 76,500
013 152 160 126,700 52,600 78,900 105,200
016 168 180 156,800 63,100 94,700 126,300
019 184 196 190,100 74,400 111,600 148,900
027 216 232 266,300 99,000 148,500 198,100
031 232 252 309,100 112,300 168,400 224,600
036 248 268 355,200 126,100 189,200 252,300
040 264 284 404,500 140,600 210,900 281,200
046 280 304 462,400 157,100 235,700 314.200
050 292 316 501,300 167,900 251,900 335,900
058 312 340 577,600 190,600 288,800 381,200
064 328 356 640,000 211,200 320,000 422,400
069 340 372 685,600 226,200 342,700 452,400
077 360 392 774,400 255,500 387,200 511,100
108 424 464 1,081,600 356,000 540,800 713,800
144 488 536 1,440,000 475,200 720,000 950,400
207 584 640 2,073,600 684,200 1,036,800 1,368,500
262 656 720 2,624,400 866,000 1,312,200 1,732,100
307 708 780 3,069,500 1,012,900 1,534,700 2,025,800
Typical design both for DLM and TLM
A compute cell or a drive cell is counted as a gate.
ARRAY
ARCHITECTURE
gate array, on the other hand, the size of the core cell is uniformly large
to provide sufficient drive for the large fanout. Yet this results in the
low gate density, as most nets have a small number of fanouts and do
not require high drive.
With CBA, the smaller gate load and smaller wire load
significantly improves performance, power and density compared to
conventional gate arrays. These features are comparable to the
same generation standard cell architecture. With this optimized cell
architecture, KZ400GH/KZ400EH arrays achieve a gate density of
up to 9,500 usable gates/mm2.
The core cell cluster of the KZ400GH/KZ400EH Series as shown in
Figure 1, is based on the CMOS-CBA®architecture licensed by
Synopsys, Inc. It consists of two different unit cells: a compute cell
and a drive cell. A compute cell contains four small PMOS and four
small NMOS that are optimized for building logic and memory. A
drive cell contains two large PMOS and two large NMOS that pro-
vide sufficient drive for global nets or large fanout. Statistical analysis
has determined that a cluster of three compute cells and one drive cell
provides optimal density for many design styles. In the conventional