PALCE29M16H-25 Datasheet, PDF (2/22 Pages) Advanced Micro Devices – 24-Pin EE CMOS Programmable Array Logic

AMD
GENERAL DESCRIPTION (continued)
The PALCE29M16 uses the familiar sum-of-products
(AND-OR) structure, allowing users to customize logic
functions by programming the device for specific appli-
cations. It provides up to 29 array inputs and 16 outputs.
It incorporates AMD’s unique input/output logic macro-
cell which provides flexible input/output structure and
polarity, flexible feedback selection, multiple Output En-
able choices, and a programmable clocking scheme.
The macrocells can be individually programmed as
combinatorial, registered, or latched with active-HIGH
or active-LOW polarity. The flexibility of the logic macro-
cells permits the system designer to tailor the device to
particular application requirements.
Increased logic power has been built into the
PALCE29M16 by providing a varied number of logic
product terms per output. Eight outputs have 8 product
terms each, four outputs have 12 product terms each,
and the other four outputs have 16 product terms each.
This varied product-term distribution allows complex
functions to be implemented in a single PAL device.
Each output can be dynamically controlled by a com-
mon Output Enable pin or Output Enable product terms
per bank of four outputs. Each output can also be per-
manently enabled or disabled.
System operation has been enhanced by the addition of
common asynchronous-Preset and Reset product
terms and a power-up Reset feature. The
PALCE29M16 also incorporates Preload and Obser-
vability functions which permit full logic verification of
the design.
The PALCE29M16 is offered in the space-saving
300-mil SKINNYDIP package as well as the plastic
leaded chip carrier package.
CONNECTION DIAGRAMS
Top View
SKINNYDIP
PLCC
CLK/LE 1
I0 2
I/OF0 3
I/OF1 ⁴
I/O0 5
I/O1 6
I/O2 7
I/O3 8
I/OF2 9
I/OF3 10
I/OE 11
GND 12
24 _VCC
23 _I2
22 I/OF₇
21 _I/OF6
20 I/O₇
19 _I/O6
18 I/O5
17 _I/O4
16 I/OF₅
15 I/OF4
14 _I1
13 I/CLK/LE
Note:
Pin 1 is marked for orientation.
08740G-2
PIN DESIGNATIONS
CLK/LE
= Clock/Latch Enable
GND
= Ground
I
I/CLK/LE
= Input
= Input or Clock/Latch Enable
I/O
= Input/Output
I/OF
= Input/Output with Dual Feedback
NC
= No Connection
VCC
= Supply Voltage
I/OF1
I/O0
I/O1
NC
I/O2
I/O3
I/OF2
4 3 2 1 28 27 26
5
25
6
24
7
23
8
22
9
21
10
20
11
19
12 13 14 15 16 17 18
I/OF6
I/O7
I/O6
NC
I/O5
I/O4
I/OF5
08740G-3
2-328
PALCE29M16H-25