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Digital Electronics
2
10
9
8
7
6
5
4
CLK
3
11
12
13
14
15
16
17
20
18
19
1
I 0
I 1
I 2
I 3
I 4
I 5
I 6
I 7
GND
V cc
B 7
B 6
Q 5
Q 4
Q 3
Q 2
B 1
B 0
OE
AND
OR
Array
Q
D Q
Q
D Q
Q
D Q
Q
D Q
(d)
Figure 9.35 (continued).
where the designer is looking for cost-effective solutions. The MAX-7000 series of CPLDs are the most
widely used ones. MAX-9000 is similar to MAX-7000 except for its higher logic capacity. MAX-7000
series devices use advanced CMOS technology and (E
2 PROM)-based architecture and offer densities
from 32 to 512 macrocells with pin-to-pin propagation delays as small as 3.5 ns. MAX-7000 devices
support in-system programmability and are available with 5.0, 3.3 and 2.5 V core operating voltages.
There are three types of device in the MAX-7000 series. These include MAX-7000S, MAX-7000AE
and MAX-7000B. Three types are pin-to-pin compatible when used in the same package. Figure 9.38
shows the basic architecture of the MAX-7000 series of CPLDs.
AMD offers the Mach-1 to Mach-5 series of CPLDs. While Mach-1 and Mach-2 are configured
around 22V10 PALs, Mach-3 and Mach-4 use 34V16 PALs. Mach-5 is similar to the Mach-4
CPLD except that it offers higher speed performance. All Mach devices use E
2 PROM technology.