S1X70000 Datasheet, PDF (34/379 Pages) Epson Company – STANDARD CELL / EMBEDDED ARRAY

Chapter 2 Estimating the Gate Density
2.2 Determining Gate Size
The number of gates used in the S1K/S1X70000-series MSI cells may be estimated from
the number of pads or from the size of the circuit implemented.
2.2.1 Estimating Bulk from the Number of Pads
Table 2-1 lists the primary bulks in the S1K/S1X70000 series with respect to the number
of pads.
Table 2-1 Typical Pad Counts and Total BC Counts
Basic Cell Type
Total BC
Count
X
Y
Cell Based Type^*2
Total BC
Count
X
Y
PAD Count ^*1
(four sides)
A
150894
747
202
205808
677
304
88
B
190836
837
228
258060
759
340
100
C
306144
1063
288
416016
963
432
128
D
390222
1197
326
529480
1085
488
144
E
466004
1309
356
633858
1187
534
160
F
569330
1445
394
773490
1311
590
176
G
623356
1513
412
844536
1371
616
184
H
778780
1693
460 1059150
1535
690
208
I
845280
1761
480 1146646
1597
718
216
J
1174450
2075
566 1593018
1883
846
256
H
1647530
2459
670 2233458
2229
1002
304
L
2164992
2819
768 2940550
2557
1150
352
M
2638128
3111
848 3582670
2821
1270
388
N
3076844
3559
916 4174390
3047
1370
420
O
3498960
3585
976 4752962
3251
1462
448
P
4001652
3833
1044 5434900
3475
1564
480
Q
4487042
4057
1106 6092424
3679
1656
508
R
4897972
4237
1156 6640704
3843
1728
532
S
5373610
4441
1210 7296924
4027
1812
556
Notes
*1: For pin counts less than 88, the number of pads is omitted.
*2: In the “S1K70000-/S1X70000-Series MSI Cell Library”, the size of each Cell Based-type cell is
expressed in grid units. Cell sizes in grid units may be converted into BC counts at a rate of 1
BC = 3.0 grids.
26
EPSON
STANDARD CELL S1K70000 SERIES
EMBEDDED ARRAY S1X70000 SERIES