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PA7128
or global clocks, resets, presets, clock polarity and other
special features, making the P A7128 suitable for a variety of
combinatorial, synchronou s and asynchronous logic appl ications. The PA 7128 offers pin compatibility a nd super-set
functionality to popular 28-pin PLDs, such as the 26V12.
Thus, designs that exceed the architectures of such
devices can be expanded upon. The PA7128 supports
speeds as fast as 9ns/15ns (tpdi/tpdx) and 83.3MHz (f
MAX
)
at moderate power consumption 105mA (75mA typical).
Packaging includes 28-pin DIP, SOIC and PLCC (see Figure 1). Development and programming support for the
PA7128 is provided by ICT and popular third-party development tool manufacturers.
PA7128 PEELTM Array
Programmable Electrica lly Erasable Logic Array
■
CMOS Electrically Erasable Technology
− Reprogrammable in 28-pin DIP, SOIC and PLCC
packages
■
Versatile Logic Array Architecture
− 12 I/Os, 14 inputs, 36 registers/latches
− Up to 36 logic cell output functions
− PLA structure with true product-term sharing
− Logic functions and registers can be I/O-buried
■
Flexible Logic Cell
− Up to 3 output functions per logic cell
− D,T and JK registers with special features
− Independent or global clocks, resets, presets, clock
polarity and output enables
− Sum-of-products logic for output enables
■
High-Speed Commercial and Industrial Versions
− As fast as 9ns/15ns (tpdi/tpdx), 83.3MHz (f
MAX
)
− Industrial grade available for 4.5 to 5.5V Vcc
and -40 to +85 °C temperatures
■
Ideal for Comb in at orial, Synch ronous and Asynchronous Logi c A pplication s
− Integration of multiple PLDs and random logic
− Buried counters, complex state-machines
− Comparitors, decoders, other wide-gate functions
■
Development and Programmer Support
− ICT PLACE Development Software
− Fitters for ABEL, CUPL and other software
− Programming support by ICT PDS-3 and other popu-
lar third-party programmers.
General Description
Features
DIP
PLCC
SOIC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1/CLK1
I
I
I
I
I
Vcc
I
I
I
I
I
I
I
1/CLK2
I/O
I/O
I/O
I/O
I/O
I/O
GND
I/O
I/O
I/O
I/O
I/O
I/O